If a ray-finned fish is to both hover (remain stationary) in the water column and ventilate its gills effectively, then what other structure besides its swim bladder will it use?
A) its pectoral fins
B) its lateral line system
C) its caudal (tail) fin
D) its operculum
Answers
If a ray-finned fish is to both hover (remain stationary) in the water column and ventilate its gills effectively, then what other structure besides its swim bladder will it use is D) its operculum.
The operculum is a bony structure that covers and protects the gills of ray-finned fish. It allows for effective ventilation of the gills while the fish hovers in the water column. The swim bladder helps with buoyancy control but does not directly aid in gill ventilation. The pectoral fins and caudal fin aid in movement and maneuverability, but not specifically in hovering or gill ventilation. The lateral line system helps the fish sense changes in water pressure and movement, but is not directly involved in either hovering or gill ventilation.
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A ray-finned fish along with the swim bladder use its operculum to cover and protect its gills. Hence the correct answer is option d.
The operculum is a bony structure that covers and protects the gills of a fish which enables efficient ventilation. When a fish is stationary or hovering, it needs to ventilate its gills to obtain oxygen from the water. The operculum helps to create a constant flow of water over the gills, allowing for efficient gas exchange. It will use its pectoral fins to help maintain a stationary position in the water column, also known as hovering. This along with the swim bladder allows the fish to control its buoyancy and position effectively. The lateral line system, caudal (tail) fin, and other structures play important roles in the fish's movement and navigation but are not primarily used for hovering and ventilating gills.So the correct answer is option d.
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Related Questions
Click and select the details that represent a
Scanning Electron Microscope
A. Uses lenses
B. Magnifies Objects
C. Creates a stunning, 3D
image
D. Illumination is needed
E. Can only view surface
of objects
F. Creates extremely
detailed images
G. Can't view live
organisms
H. Uses electrons to scan
the image
I. Uses a computer to
generate the image
J. Has a vacuum tube
K. Magnifies to 40x
Answers
Differentiate between the basic cell types.
Answers
Answer:
Explanation:
There are two basic types of cells: prokaryotic cells and eukaryotic cells.
Prokaryotic cells are the simpler of the two types of cells. They are smaller and less complex than eukaryotic cells. Prokaryotic cells do not have a true nucleus and their genetic material is not enclosed in a membrane. Prokaryotic cells are found in bacteria and archaea.
Eukaryotic cells are more complex than prokaryotic cells. They are larger and have a true nucleus, which is a membrane-bound structure that contains the cell's genetic material. Eukaryotic cells also have other membrane-bound organelles, such as mitochondria, which are involved in energy production, and the endoplasmic reticulum and Golgi apparatus, which are involved in protein synthesis and transport. Eukaryotic cells are found in plants, animals, fungi, and protists.
There are also several subtypes of eukaryotic cells, including animal cells, plant cells, and fungal cells. Each of these types of cells has specialized features that allow them to perform specific functions. For example, plant cells have cell walls and chloroplasts, which are involved in photosynthesis, while animal cells do not.
Explain how the villi and the alveoli are adapted to absorb molecules into the bloodstream. (6 marks)
Answers
Answer:
they have Well supplied blood vessels which carry away absorbed food. Lacteal present which transports absorbed lipids away from Small Intestine
Villi and alveoli both are filled with rich network of blood capillaries, and the blood constantly moves through them that maintains a steep concentration gradient.
What are blood capillaries?Capillaries are the thinnest blood vessels. Capillaries are delicate vessels which exist throughout the body. They transport blood, nutrients and oxygen to all the cells in organs and all the organ systems. Capillaries are the smallest blood vessels of the vascular system.
The alveoli present in the lungs are covered with a rich blood supply of capillaries. This network provides a diffusion gradient for the gases through which oxygen move into the blood and carbon dioxide move into the lungs. The alveoli are highly folded which gives them high surface area: volume ratio for gaseous exchange. The alveolar walls are one-celled thick which makes it easy for the gases to diffuse across.
This gradient produced by the capillary network in the villi increases the amount of dissolved, digested food that can be absorbed into the bloodstream from the alveoli of small intestine.
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Position (m)
12
10
8
6
4
2
0
Position vs Time
2
4
6
Time (s)
8
10
12
Based on the graph, describe what is happening
between 4 and 6 seconds.
The object is moving away from the startata
constant speed.
The object is not moving.
The object is returning to the start at a constant
speed.
The object is changing speed.
Answers
Based on the graph, between 4 and 6 seconds time intervals, the object is stationary and not moving.
Between 4 and 6 seconds, according to the given position vs. time graph, the object's position remains constant at 4 meters. This means that there is no change in the object's displacement during this time interval, indicating that it is not moving.
The flat line on the graph between these two points indicates a steady position, suggesting that the object has come to rest or is stationary.
There is no indication of acceleration or velocity changes during this period, reinforcing the conclusion that the object is at a standstill. Therefore, the object is not changing its position or speed and can be described as not moving between 4 and 6 seconds.
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A typical female who is 20 to 24 years old has about ______ of essential fat. 8-12%. Obesity is characterized by an excessive accumulation of. body fat.
Answers
A typical female who is 20 to 24 years old has about 8-12% of essential fat.
Obesity is characterized by excessive accumulation of body fat that leads to negative health consequences.
Essential fat is stored in bone marrow, organs, and muscles, and is required for proper hormone production, insulation, and protection of vital organs.
Obesity is caused by an energy imbalance between calories consumed and calories expended. This imbalance can be the result of various factors including genetics, lifestyle choices, and environmental factors.
Obesity is linked to an increased risk of numerous health problems, such as type 2 diabetes, cardiovascular disease, and certain types of cancer.
Maintaining a healthy body weight through regular exercise, a balanced diet, and healthy lifestyle choices can help prevent obesity and its associated health risks.
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describe three cardiac effects of increased sympathetic activity, and of increased parasympathetic activity
Answers
Three cardiac effects of increased sympathetic activity include increased heart rate, increased contractility, and vasoconstriction. On the other hand, three cardiac effects of increased parasympathetic activity include decreased heart rate, decreased contractility, and vasodilation.
1. Increased sympathetic activity:
- Increased heart rate: Sympathetic stimulation leads to the release of norepinephrine, which binds to beta-1 adrenergic receptors in the heart, causing an increase in heart rate.
- Increased contractility: Sympathetic activation enhances the strength of cardiac muscle contractions, increasing the force of each heartbeat and cardiac output.
- Vasoconstriction: Sympathetic nerves release norepinephrine, which causes constriction of blood vessels, leading to increased peripheral vascular resistance and blood pressure.
2. Increased parasympathetic activity:
- Decreased heart rate: Parasympathetic stimulation, mediated by the vagus nerve, releases acetylcholine that binds to muscarinic receptors in the heart, slowing down the heart rate.
- Decreased contractility: Parasympathetic activation decreases the force of cardiac muscle contractions, resulting in a decrease in cardiac output.
- Vasodilation: Parasympathetic activity causes relaxation of blood vessel smooth muscles, leading to vasodilation, decreased peripheral vascular resistance, and lower blood pressure.
These effects of increased sympathetic and parasympathetic activity play crucial roles in regulating cardiac function and maintaining cardiovascular homeostasis in response to various physiological demands.
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If the movement of molecules or ions requires a protein channel of some sort, it is called facilitated trans
still requiring no energy
Answers
If the movement of molecules or ions requires a protein channel, it is called facilitated transport still it does not require energy. The given statement is true.
What is Facilitated diffusion?Facilitated diffusion is the process of spontaneous transport of molecules or ions across a biological membrane via some specific transmembrane integral proteins such as channels or carrier proteins.
Facilitated diffusion is also called the carrier-mediated diffusion because a substance which is transported in this manner diffuses through the membrane with the help of a protein. That is, the protein facilitates diffusion of the substance to the other side of the membrane.
Facilitated diffusion does not require high energy molecules such as ATP like active transport. This type of diffusion uses protein to transport molecules across the plasma membrane.
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Your question is incomplete, most probably the complete question is:
If the movement of molecules or ions requires a protein channel of some sort, it is called facilitated transport still requiring no energy. True or False?
what is the process called that converts the genetic information stored in dna to an rna copy? view available hint(s)for part
a.transcription
b. translocation
c. replication
d. translation
Answers
The process that converts the genetic information stored in DNA to an RNA copy is called transcription.
Transcription is the process by which the genetic information encoded in DNA is copied into a complementary RNA molecule. It is a fundamental step in gene expression, where the information from DNA is used to produce functional RNA molecules.
During transcription, an enzyme called RNA polymerase binds to a specific region of the DNA called the promoter and unwinds the DNA double helix. The RNA polymerase then synthesizes a single-stranded RNA molecule, using one DNA strand as a template.
The resulting RNA molecule is complementary to the DNA template and contains the same genetic information, except that thymine (T) in DNA is replaced by uracil (U) in RNA. Once transcription is complete, the RNA molecule can undergo further processing, such as splicing and modification, to become mature mRNA (messenger RNA) that can be used for protein synthesis during translation.
In summary, transcription is the crucial process that converts the genetic information stored in DNA into an RNA copy, facilitating the transfer of genetic instructions for protein synthesis.
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1If you have 52.4 grams of hydrogen and 52.4 grams of helium, which one has a greater mass ? Why ?
Answers
Answer:
Hydrogen.
Explanation:
Hydrogen has greater mass and it's bigger than helium because as we move from left to right on the periodic table, atomic size decreases. Hydrogen atom is normally signified than H2 which is bigger than an atom of helium.
Also hydrogen has an atomic radius of 53pm while Helium has an atomic radius of 31 pm. Therefore the mass of helium is smaller than that of hydrogen.
Describe the shape of a spider web observed during an investigation of living and non living things in your backyard is an example of _________. measurement
Answers
Answer:
Qualitative
Explanation:
There's two kinds of observation in the scientific method: quantitative and qualitative.
Quantitative is like physical measurement, actual numbers and such. Such as height, weight, etc.
Qualitative is like color, descriptions, shape etc.
Therefore, I think answer should be Qualitative.
name the plane that divides the body into an anterior and a posterior portion
Answers
The plane that divides the body into an anterior (front) and a posterior (back) portion is called the coronal plane, also known as the frontal plane.
It is one of the three anatomical planes along with the sagittal plane (dividing the body into left and right portions) and the transverse plane (dividing the body into upper and lower portions).
The coronal plane, also referred to as the frontal plane, is an anatomical plane that divides the body into anterior (front) and posterior (back) portions. It is perpendicular to both the sagittal plane and the transverse plane, creating a right angle with them.
Imagine the body standing upright with arms outstretched to the sides. If you were to make a vertical slice from the top of the head down to the feet, dividing the body into front and back halves, that would be the coronal plane.
The coronal plane runs parallel to the long axis of the body and separates structures into anterior and posterior sections. For example, if you consider the head, the forehead and face would be in the anterior portion, while the back of the head would be in the posterior portion.
In terms of anatomical references, structures closer to the front side of the body are referred to as "ventral" or "anterior," while structures closer to the back side of the body are referred to as "dorsal" or "posterior." For instance, the heart is located in the anterior portion of the body, while the spinal cord is located in the posterior portion.
The coronal plane is commonly used in medical imaging, such as X-rays, CT scans, and MRIs, to capture cross-sectional images of the body from a front-to-back perspective. This helps in the assessment of various anatomical structures and can aid in diagnosing certain conditions or injuries.
By dividing the body into anterior and posterior portions, the coronal plane provides a useful reference for understanding the anatomical relationships and orientations of structures in the body.
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Which statement describes an environmental benefit of the sustainable use of land?
Sustainable farming of land can provide food to support a large global population.
Cutting down more trees will provide materials to build more affordable housing.
Problems associated with the degradation of common areas will decrease.
Companies will increase profits by dumping waste on public land.
Answers
Answer:
Sustainable faming
Explanation:
Sustainable cultivation of land can provide food to support a large global population, describing the environmental benefits of sustainable land use. So, the correct option is A.
What is Sustainable land use?Sustainable land use is described as the practice of using and managing land effectively by judicious use and distribution of environmental resources such as land so as to secure it for future use which involves the indiscriminate usage of land resources with no negative effects or consequences that have rather a positive impact on the environment.
Using agricultural land in a sustainable manner can ensure an efficient increase in the amount of agricultural food so that it can meet the food requirement of the global population. Sustainable cultivation of land can provide food to support a large global population, describing the environmental benefits of sustainable land use.
So, the correct option is A.
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which event is least likely to occur after a gene duplication event? both genes retain their function, but they are expressed in different tissues. one gene retains its function, while the other becomes a pseudogene. both genes retain their function, but they are expressed at different times. both genes become pseudogenes. one gene retains its function, while the other evolves to have a new function
Answers
Gene duplication events often occur as a result of errors during DNA replication or repair, which can create an additional copy of a gene. Alternatively, one copy may evolve to have a new function while the other retains its original function.
After a gene duplication event, the least likely scenario is for both genes to become pseudogenes. Gene duplication events often occur as a result of errors during DNA replication or repair, which can create an additional copy of a gene. In some cases, both copies of the gene may retain their original function and be expressed in different tissues or at different times. Alternatively, one copy may evolve to have a new function while the other retains its original function. While it is possible for one copy to become a pseudogene, it is unlikely that both copies would become non-functional as this would be disadvantageous for the organism. Therefore, the scenario where both genes become pseudogenes is the least likely to occur after a gene duplication event.
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Imagine that you're a researcher in a neurology lab looking at functioning neurons with an advanced microscope. You notice that there is a lack of signaling between a particular set of neurons.
Which of the following best describes why these particular neurons may not be functioning properly?
Choose 1 answer:
(Choice A) The neurons' cell bodies are producing neural impulses that are too strong.
(Choice B) The neurons' cell bodies are producing neural impulses that are too weak
(Choice C) The neural impulses are not properly traveling through the axons and cannot be transmitted from one neuron to another.
(Choice D) The neurons are receiving signals that cause resting potential changes, producing an electrical impulse called an action potential.
Answers
The neuronal impulses are not adequately passing through the axons and cannot be passed from one neuron to another, as stated in Option C.
What occurs if neurons don't work properly?Because they are brittle, neurons are susceptible to tearing, cutting, and pressure. A damaged neuron can stop impulses from entering and exiting the brain, affecting muscle control or causing numbness in the affected area. Peripheral nerves, the spinal cord, and the brain can all be affected by nerve injury.
Why might this neuron not operate properly?It would be impossible for this neuron to receive impulses. The signal could not be recharged by this neuron. It would be impossible for this neuron to combine data from several synapses.
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Answer:
choice c
Explanation:
The neuronal impulses are not adequately passing through the axons and cannot be passed from one neuron to another
the word part that completes the medical term meaning abnormal condition of a fungus in the nails, onych/o/ /osis, is:
Answers
The word part that completes the medical term meaning abnormal condition of a fungus in the nails, onych/o/osis, is "myc". The complete medical term is onychomycosis, where "onych/o" means nails, "myc" means fungus, and "osis" means abnormal condition or disease.
The medical term meaning abnormal condition of a fungus in the nails is onychomycosis. The word part "myc" means fungus, "onych" means nails, and "osis" means abnormal condition. The root word "onych" is derived from the Greek word "onycho," which means claw or nail. Fungal infections of the nails are common, especially in toenails, and can cause thickening, discoloration, and deformation of the nails. Onychomycosis can be treated with antifungal medications, but it can take several months for the nail to grow out and the infection to clear completely. Proper hygiene, avoiding nail trauma, and wearing breathable shoes and socks can help prevent fungal nail infections.
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What is the super additive effect of Multisensory integration?
Answers
The super additive effect of multisensory integration refers to the phenomenon where the combined influence of multiple sensory inputs results in a greater impact on perception, cognition, or behavior than the sum of their individual effects.
In other words, when our brain processes information from multiple sensory sources simultaneously, it can lead to enhanced performance and a more robust understanding of our environment. Multisensory integration is the process through which our brain combines and integrates information from different sensory modalities, such as sight, sound, touch, taste, and smell. This integration enables us to perceive the world more accurately and efficiently, as it helps our brain to create a coherent and unified representation of external stimuli.
To illustrate the super additive effect of multisensory integration, consider a scenario where you are trying to locate a source of sound in a noisy environment. If you were to rely solely on auditory information, it might be challenging to pinpoint the exact location of the sound. However, if you also have visual cues, such as a person talking or a flashing light, the combined sensory inputs can help you determine the sound's source more accurately and quickly. This enhancement in performance can be explained by the fact that the brain is better equipped to process and interpret information when it receives input from multiple senses.
As a result, the super additive effect of multisensory integration allows us to better perceive, interpret, and respond to our surroundings, ultimately improving our ability to navigate and interact with the world around us.
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In the process of respiration, energy is released from ______
molecules and stored in smaller ______ molecules.
A. protein, ATP
B. food, glucose
C. lipids, triglycerides
D. glucose, ATP
Answers
Answer:
The answer is option D.
Hope this helps you
Answer:
In the process of respiration, energy is released from glucose molecules and stored in smaller ATP molecules.
Explanation:
Among carbohydrates, protein and fat, carbohydrates are metabolized first on respiration.
Glucose first breaks into pyruvic acid (Glycolysis) Pyruvic acid forms acetyl coA (Link reaction) Acetyl coA enters into the kreb cycle, where ATP is formed. ATP formed through substrate level phosphorylation (direct ATP) and Electron transport chain (indirect ATP). NADH2 and FADH2 formed during respiration enters into ETC where they form ATP through oxidative phosphorylation.Thus, we can say that the correct option is D. Glucose, ATP.
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Please help??? The nuclear membrane encloses the genetic material of eukaryotes. The many nuclear pores that are embedded in the nuclear membrane allow the movement of
A. ribosomal subunits into the nucleus.
B. proteins out of the nucleus.
C. mRNA out of the nucleus.
D. DNA out of the nucleus.
Answers
Answer:
C. mRNA out of the nucleus.
Explanation:
The nucleus is the central organelle that controls the activities of the cell in living organisms. In eukaryotic organisms, a membranous covering called NUCLEAR MEMBRANE surrounds the nucleus and protects the genetic material (DNA) located inside the nucleus.
However, there are numerous tiny pores embedded within the nuclear membrane, whose function is to allow the back and forth movement of materials between the nucleus and cytoplasm. Examples of those materials is the movement of mRNA out of the nucleus into the cytoplasm after transcription.
Fossil fuels (oil) are part of which cycle?
carbon
nitrogen
phosphorus
oxygen
Answers
Carbon is a part of rocks and fossil fuels like oil, coal, and natural gas etc...
how do the following affect resistance? (in other words, does resistance increase or decrease with these things?)- i. blood viscosity - ii. length of blood vessel - iii. blood vessel diameter - iv. atherosclerosis -
Answers
Resistance affects them in the following way: resistance increases with higher blood viscosity, the length of the blood vessel, atherosclerosis, and resistance decreases with an increase in blood vessel diameter
i. Blood viscosity: Resistance increases with higher blood viscosity. When blood becomes thicker (more viscous), it is harder for it to flow through blood vessels, causing increased resistance.
ii. Length of blood vessel: Resistance increases with the length of the blood vessel. The longer the blood vessel, the more resistance there is for the blood to flow through it, due to increased friction between the blood and the vessel walls.
iii. Blood vessel diameter: Resistance decreases with an increase in blood vessel diameter. As the diameter of a blood vessel increases, the blood has more space to flow, resulting in less resistance. Conversely, if the diameter of the blood vessel decreases, resistance will increase.
iv. Atherosclerosis: Resistance increases with atherosclerosis. Atherosclerosis is the buildup of plaque on the inner walls of blood vessels, which narrows the vessels and reduces their elasticity. This results in increased resistance to blood flow due to the narrowed diameter and decreased flexibility of the blood vessels.
In summary, blood vessel resistance increases with higher blood viscosity, longer blood vessels, smaller blood vessel diameters, and the presence of atherosclerosis.
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How does blood move from arteries to veins?
a. through capillaries
b. through the aorta
c. through oxygen
d. through the heart
Answers
Answer:
a. through capillaries
Based on scientific evidence, replacing saturated fat with __________ fats significantly reduce total and LDL cholesterol in the blood. a. complex carbohydrates
b. vitamin-mineral complex
c. high-quality protein
d. polyunsaturated fats
Answers
Answer:
Polyunsaturated fats
Explanation:
Based on scientific evidence, replacing saturated fat with polyunsaturated fats significantly reduces total and LDL cholesterol in the blood, which is present in Option D, and the polyunsaturated fats are found in foods like fatty fish, nuts, and seeds.
What are polyunsaturated fats?It is a type of unsaturated fat that contains more than one double bond, when these fats are used to replace saturated fats in the diet, they can help lower total and LDL cholesterol levels in the blood and reduce the level of cardiac diseases, blood vessel-related diseases, etc, polyunsaturated fats contain omega-3 and omega-6 fatty acids, which have been found to have heart-protective effects.
Hence, replacing saturated fat with polyunsaturated fats significantly reduces total and LDL cholesterol in the blood, which is present in Option D.
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Select all correct answers.
Which two of these locations are likely to experience the most chemical weathering?
cold and dry regions
cold and rainy regions
hot and humid regions
hot and dry regions
hot and rainy regions
Answers
Hot and rainy, and hot and humid regions are likely to experience the most chemical weathering. Therefore, options C and E are correct.
What is weathering?Weathering is the process by which rocks, soils, and minerals are broken down. Weathering can occur through several mechanisms, including mechanical weathering, chemical weathering, and biological weathering.
Mechanical weathering occurs when rocks are physically broken down into smaller pieces without any change in their chemical composition.
Chemical weathering occurs when rocks are broken down through chemical reactions, which change their chemical composition.
Biological weathering occurs when living organisms, such as plants and animals, contribute to the breakdown of rocks and soils. Therefore, options C and E are correct.
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Please Hurry WILL GIVE BRAINLIST
An example of sunlight passing through clouds during sunset, results in what is often called the cloud's silver lining. Pastel shades of blue, pink, purple, and green can be observed at times of cloud cover. What is the cause of these patterns in the sky?
Responses
Water in the atmosphere and within the clouds themselves cause light waves to refract and reflect, creating an assortment of colors.
Water in the atmosphere and within the clouds themselves cause light waves to refract and reflect, creating an assortment of colors., EndFragment,
The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones.
The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones.
StartFragment, The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones., The patterns occur when light is diffracted from water droplets within the clouds. The amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones., EndFragment, ,
The patterns occur when light is absorbed by water droplets within the clouds. The amount of absorption that occurs depends on the temperature of the air.
The patterns occur when light is absorbed by water droplets within the clouds. The amount of absorption that occurs depends on the temperature of the air., EndFragment,
The patterns occur when light is reflected from water droplets within the clouds. The amount of reflection that occurs depends on the wavelength of the light, and shorter wavelengths are reflected at a greater angle than longer ones.
Answers
The cause of the color patterns in the sky is when light is diffracted from water droplets within the clouds, the amount of diffraction that occurs depends on the wavelength of the light, and shorter wavelengths are diffracted at a greater angle than longer ones which is therefore denoted as option D.
What is Diffraction?This is a term which is described as the process of light bending around an obstacle or spreading out after it moves through a small or tiny space.
We should also be aware that it is dependent on the wavelength of the light such that those with a shorter wavelengths are usually diffracted at a greater angle than longer ones which is therefore the reason why the color pattern is observed in the sky and is therefore the reason why it was chosen as the correct answer.
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Which layer of the
earth has the greatest
density? Why?
Answers
Answer: metal inner core
Explanation:
It is made of the densest components & it is under the greatest compression; due to the overlying layers.
The inner core of Earth has the greatest density due to:
- The inner core is made of solid iron and nickel
- The inner core gets consolidated due to pressure exerted by the other top layers.
What are the different layers of the Earth?
Generally the Earth is made of three different layers:
- Crust- The outer layer
- Mantle - The Middle Layer
- Core - The Inner Layer.
Crust:
Outer layer of the Earth and is thin, brittle and cold compared to other layers.
It is majorly made of light elements especially silica, aluminum and oxygen.
The thickness of crust varies for for land and ocean where the former is thicker than latter.
Mantle:
It is around 3000 km thick and is the thickest layer of the Earth. It starts mere at 30 km from the earth's crust.
It is majorly made of Iron, Magnesium and silicon and is dense, hot and semi solid.
The upper part of the mantle is liquid in nature called as Asthenosphere and it is believed that tectonic plates rides upon here and slide across.
Core:
Core is further divided into Outer core and Inner core.
Outer core is made of iron and nickel and is liquid in nature. It is heated largely by the radioactive decay of the elements of the uranium and thorium and this liquid churn huge turbulent current.
Inner core is a solid metal ball having radius of 1220 km. It is extremely dense and is mostly made of iron and nickel.
The temperature of inner core is similar to that of the surface of sun along with high amount of pressure.
Thus this layer has the greatest density amongst all the layers of the Earth.
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1. What are too small to be seen but make up everything?
Answers
Answer:
Matter is made up of small particles that are too small to be seen, even with a powerful microscope.
Answer:
atoms and molecules
Explanation:
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Do trees keep their internal parts separate from the outside environment?
Answers
Answer:
yes, they do.
Explanation:
Question 1 of 10
Which statement is true of base pairing in DNA?
OA. One strand has only guanine and cytosine, and the other strand
has only adenine and thymine.
OB. Cytosine in one strand pairs with cytosine in the other strand.
OC. Guanine in one strand pairs with cytosine in the other strand.
OD. One strand has only adenine and guanine, and other strand has
only cytosine and thymine.
SUBMIT
Answers
Guanine in one strand pairs with cytosine in the other strand of DNA. Therefore, option C is correct.
What is base pairing in DNA?A theory known as base pairing describes how hydrogen bonds are created in nitrogenous bases. Only certain base pairs cytosine, guanine, adenine, and thymine can generate hydrogen bonds.
When existing strands of DNA are duplicated to create a new strand, base pairing is involved in the replication process.
Adenine always makes double hydrogen bonds with thymine and guanine always makes triple hydrogen bonds with cytosine. Therefore, option C is correct.
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MY LAST POINTS PLEASE (PLEASE)
A strong earthquake recently occurred in Nevada. The star represents the epicenter of the earthquake. Where is the focus?
Nevada
Oregon
Idaho
Utah
Answers
Answer:
Nevada
Explanation:
it is in the same location when u look at it from a map point of view.
the following image should help. the focus is the exact location where the plate grinds. the epicenter is right above the focus, just on the surface.
hope this was worth ur last points
Answer:
Explanation:
Nevada
If the available space in an environment decreased, would competition increase or decrease?