Answers
Answer:
natural selection
Explanation:
Related Questions
explain how the tissue of the esophagus and tissue of the trachea can be differentiate
Answers
Answer:
Trachea: It is the wind pipe — making it a part of the respiratory system
Esophagus: It is the food pipe — making it a part of the digestive system
Trachea: It is shorter, 10–11 centimeters. It connects upper airway to the lungs
Esophagus: It is longer, 25 centimeters. It connects mouth to the stomach
Trachea: It is cartilaginous, made of C-shaped semicircular cartilages. They give it structural stability and prevents it from collapsing
Esophagus: It is muscular. It contracts in a wave-like motion through it’s length to propel food from mouth to stomach a.k.a swallowing
Trachea: It’s opening is protected by Epiglottis, a flap like structure, to prevent food from accidental entering the air passage. It prevents choking
Esophagus: It’s opening is protected by two sphincters. They are muscular rings that constrict to close the esophagus off when food is not being swallowed.
Trachea: It has 2 portions — cervical and thoracic i.e. neck and chest portions.
Esophagus: It has 3 portions — cervical, thoracic and abdominal i.e. neck, chest and stomach portions.
(c) Researchers analyzing the SIRT3 gene sequence engineer a SIRT3 gene that is identical to the normal gene
except that a single nucleotide has been deleted from the 5' end of the second exon of the gene; the deletion does
not affect splicing. The researchers
introduce this gene into normal stomach cells to determine how the primary
AND tertiary structures of the protein expressed from the engineered SIRT3 gene will compare with the protein
expressed from the normal SIRT3 gene in these cells. Predict the results of this experiment. The researchers
claim that the data in Figure 3 provide evidence that the stomach cancer cells
perform fermentation to a greater
extent than do normal stomach cells. Provide reasoning to justify the claim. Based on the information provided,
predict the effect on the ratio of NADH/NAD+ in the cells treated with the compound that blocks the electron
transport chain compared with similar cells not treated with the compound.
Answers
It is expected that this single nucleotide deletion does not affect the functioning of the protein since this modification didn't alter gene splicing. Cancer cells may have high metabolic activity.
The metabolic characteristics of cancer cellsCancer cells exhibit more plastic phenotypes than normal cells, thereby mutations of genes associated with metabolism in cancer cells may lead to a selective advantage to generate ATP and thus increase their metabolic rate.
In consequence, it is expected that stomach cancer cells can perform fermentation at a faster rate than normal cells because they may exhibit high metabolic activity.
Finally, the NADH/NAD+ ratio will be decreased in cells treated with a compound that blocks the electron transport chain because NAD+ is reduced to NADH during this step of cellular respiration.
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refer to exhibit 34-1. if country a is to specialize in the production of one of the two goods (and then trade that good with country b), which good should it be and why? if country b is to specialize in the production of one of the two goods (and then trade that good to with country a), which good should it be and why? group of answer choices good x for country a because it is the higher opportunity cost producer of good x; good y for country b because it is the higher opportunity cost producer of good y. good x for country a because it is the lower opportunity cost producer of good x; good y for country b because it is the lower opportunity cost producer of good y. good y for country a because it is the higher opportunity cost producer of good y; good x for country b because it is the higher opportunity cost producer of good x. good y for country a because it is the lower opportunity cost producer of good y; good x for country b because it is the lower opportunity cost producer of good x.
Answers
Good X for Country A as it is the producer of good X with the lowest opportunity cost, and Good Y for B because it is the producer of good Y with the lowest opportunity cost.
By concentrating just on good(s) that the nation produces most effectively, more of those items are created, allowing the nation to trade for more other things than it could have produced alone. A nation does have a comparative advantage in production of a good if there is a lower opportunity cost associated with doing so there. Even if one country has a definite advantage in all items, trading with some other country will still benefit it. Trade restraints include, for example, tariff obstacles. The tariff, also referred to as a customs duty, refers to taxes imposed on goods as they cross international borders, usually by the government of the country that is importing the goods.
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What is the difference between biofilm and colony?
Answers
Answer/Explanation:
I think that the difference is that biofilms are communities that adhere to a surface. Colonies on agar plates do that. The cells are connected to each other and adhere to a surface. Each feature of biofilms depends on the environmental factors and the resulting physiology...!
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Write me a 10 minute speech about varicella zoster
Need it asap
Answers
Varicella Zoster is an infectious viral disease causing chickenpox in children and shingles in grown-ups. Inoculation plays a crucial part in avoidance and lessening complications.
Aspeech on Varicella-ZosterWomen and noblemen,
Nowadays, I would like to examine a vital and predominant viral disease known as Varicella Zoster. Varicella Zoster, commonly alluded to as chickenpox, is caused by a varicella-zoster infection. It fundamentally influences children, but can too affect grown-ups who have not been already contaminated.
Varicella Zoster presents as a profoundly infectious sickness characterized by a particular hasty, fever, and common disquietude. The infection spreads through coordinated contact or respiratory beads, making it effortlessly transmissible inside families and communities.
Whereas chickenpox is for the most part a gentle ailment in children, it can lead to more serious complications in grown-ups, pregnant ladies, and people with debilitated resistant frameworks. These complications incorporate pneumonia, bacterial contaminations, and in uncommon cases, neurological complications such as encephalitis.
Luckily, the improvement of a profoundly successful antibody has essentially diminished the frequency of Varicella Zoster around the world. Immunization not as it were secures people from the distress and potential complications of chickenpox, but too makes a difference anticipate the infection from spreading inside the community.
In any case, Varicella Zoster doesn't halt at chickenpox. Once the introductory contamination settles, the infection remains torpid inside the body and can reactivate a long time afterward, causing a condition known as herpes zoster, or more commonly, shingles.
Shingles are characterized by a difficult hasty that ordinarily happens in a single dermatome, regularly along the middle or confront. The reactivated infection can cause critical pain and inconvenience, enduring for weeks or indeed months. Moreover, complications such as postherpetic neuralgia, a persistent torment disorder, can happen, especially in more seasoned people.
To combat the chance of shingles, an isolated antibody called the shingles antibody or herpes zoster immunization has been created. This antibody not as it were makes a difference anticipate shingles but moreover diminishes the chance of postherpetic neuralgia.
In conclusion, Varicella Zoster, enveloping both chickenpox and shingles, could be a viral contamination that has critical suggestions for open well-being. We have made significant progress in reducing the burden of this disease through extensive vaccination efforts.
In any case, ongoing efforts to prevent Varicella zoster from returning to our communities and to protect powerless populations require prompt attention and vaccination.
Much obliged to you for your thought. Let's collaborate to ensure a better future for everyone.
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the _____ of dissolved molecules that _____ the cell and _____ organelles
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The Solute of dissolved molecules that make the cell and cell organelles.
Cell- The primordial, membrane-bound cell that houses the building blocks of life and is the basis of all living things. Like a bacterium or yeast, a single cell is frequently a fully functional organism in and of itself. As they mature, other cells develop specific roles.
Cell Organelles- Inside cells, organelles have specialized structures that carry out a variety of tasks. Literally, the phrase refers to "tiny organs." Organelles provide specialized duties to keep a cell alive, just like organs like the heart, liver, stomach, and kidneys serve specific roles to keep an individual alive.
Solute- A material that has been dissolved in another substance, typically in smaller amounts. A solution is something that has been dissolved, as sugar in water.
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solutions to electricity crisis in South Africa
Answers
Answer:
The first is to increase the supply, such as building new power stations. The second is to decrease demand, such as encouraging consumers to switch off appliances or switching to renewable energy sources.
Explanation:
What is the flexibility of spider silk determined by the structure of its molecules
Answers
The flexibility of spider silk determined by the structure of its molecules is quite strong.
The components that make up spider silk are what give it its flexibility. Proteins called fibroins, which are made up of amino acids organised in a certain sequence, make up spider silk. The arrangement of amino acids in fibroin proteins results in a helical structure, which is held together by hydrogen bonds between the amino acids.
The fibroin protein chain's exact arrangement of amino acids and hydrogen bonds produces a special blend of strength and flexibility. The silk is flexible enough to stretch and absorb energy without breaking and robust enough to resist significant stress. Spider silk is a fantastic material for many uses, including clothes, medical equipment, and even bulletproof vests, thanks to its unique mix of qualities.
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explain how a kidney machine works if you have a kidney failure
Answers
Answer:
Explanation:
A kidney machine, also known as a hemodialysis machine, filters your blood through a dialyzer, which works like a kidney and filters out extra salt, waste, and fluid. The machine has built-in safety checks to ensure the process is safe and effective. A pump in the machine slowly draws out your blood, then sends it through the dialyzer. Your cleaned blood is sent back into your body through the second needle in your arm.
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Male organisms are more susceptible to genetic disorders linked to the sex chromosome then female because they have _______, and therefore, the law of dominance doesn’t apply
Answers
Because male creatures contain X and Y chromosomes, which are sex chromosomes, the law for dominance does not apply to them and they more susceptible to sex-related genetic diseases than female species.
Why are sex-related features more prevalent in males than females?Males only inherited one X chromosome, hence they only have one chance to receive the "good" allele because females contain two versions of an x-linked allele whereas males only carry one. Males are more likely than females to exhibit X-linked characteristics.
Why are sex-related genetic diseases exclusively inherited by women?That's because X-linked diseases are typically brought on by a lack of functional copies of a gene found on the X chromosome. Males are born with just one X chromosome. Hence, they just require one malfunctioning .
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A botanist scrapes off a flower of one plant and then uses it to pollinate the flower of another plant. What can be scientifically concluded about their offspring
Answers
The offspring resulting from pollinating a flower of one plant with the scraped-off flower of another plant will be genetically distinct from their parent (option c) .
When a botanist scrapes off a flower from one plant, it collects the pollen from that flower.
The botanist then uses the collected pollen to pollinate the flower of another plant, transferring the genetic material from one plant to another.
Pollination is the process by which pollen grains are transferred from the male reproductive organ (stamen) to the female reproductive organ (pistil) of a flower.
During pollination, the pollen carries the genetic information (DNA) of the plant it came from.
When the pollen reaches the stigma of the second plant's flower, it fertilizes the ovules and initiates the formation of seeds.
The seeds that develop from this cross-pollination will contain a combination of genetic material from both parent plants.
Due to the mixing of genetic material, the offspring will be genetically distinct from either parent.
The specific characteristics of the offspring will depend on the traits inherited from each parent.
Genetic recombination and variation occur during sexual reproduction, resulting in offspring that exhibit a range of genetic traits.
Therefore, based on the process of sexual reproduction and genetic mixing through pollination, it can be concluded that the offspring will be genetically distinct from their parent.
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Which statements describe advantages of medical sensors with cellular internet connections? Select the two correct answers.
Answers
The statements that describe advantages of medical sensors with cellular internet connections are :
A. Real-time MonitoringC. Increased Privacy and SecurityWhat are the advantages of medical sensors with cellular internet connections ?Medical sensors with cellular internet connections allow for real-time monitoring of vital signs and health parameters, facilitating timely interventions and proactive care management.
Medical sensors with cellular internet connections offer enhanced privacy and security measures to protect patient data, ensuring confidentiality and compliance with data protection regulations. Medical sensors with cellular internet connections can be used to collect data from a variety of sources, which can help to improve research and development in the healthcare industry.
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Options include:
A: Real-time Monitoring
B: Cost Efficiency
C: Increased Privacy and Security
D: Longer Battery Life
E: Compatibility with Legacy Systems
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Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation
Answers
Answer:competition
Explanation:
Maintaining high global biodiversity is important to provide ecosystem services to humans. Describe one cultural ecosystem service provided by diverse ecosystems.
Answers
Answer:
Ecosystem services of provision or supply
Explanation:
Ecosystem services
When talking about ecosystem services, we are referring to the benefits that ecosystems provide us. There are four types of ecosystem services:
Provision or supply:These are the products obtained by nature to be used or consumed, directly or with previous processing. Among them, we might mention food, clear freshwater, fertile soils, geotic materials (such as salt), raw materials (that can be used for clothing, construction), renewable fuels, biochemical compounds, pharmacological/medicinal resources, among others. Provisioning service has an impact on the economy, as many of these products are used to commercialize.
Regulation:Refers to ecological processes that improve life. Among others, we might mention climate regulation, CO² absorption, water purification, air purification, erosion control, natural disaster avoidance such as flooding, soil fertility maintenance, waste recycling, pests/plagues control, etc.
Cultural:Refers to not the material benefits. Ecosystems also provide a recreational place or area to spend time, to learn, provide a spiritual/religious space, are a source of inspiration. Ecosystems are considered to be cultural patrimony. Ecosystems are the source of scientific knowledge.
Support:Involves ecological processes needed for the production of the other three previously mentioned services. There are five different support services:
→ Soil formation
→ Photosynthesis
→ Primary production
→ Nutrients cycles
→ Water cycle
Under certain circumstances, regulation services can also be considered support services.
Support service affects human beings indirectly, or direct but causing an effect in a long-term period.
A scientist thought he might have discovered a new plant compound that would lower blood pressure in people. In
Answers
Answer:
The knowledge gained will lead to further experimentation that could potentially result in a new use for the drug.
Protein synthesis is accomplished primarily by the interaction of which two cells structures?
Answers
Answer: nuclei and ribosomes
Explanation:
The process of converting food so that it can be absorbed into the blood and used by the blood vessels
A. Peristalsis
B. Bowel Elimination
C. Constipation
D. Digestion
Answers
Answer:
The answer would be digestion
Explanation:
When food is digested, it's broken down into smaller pieces so its can convert into energy for our body.
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Which statement describes what is happening at the plate
boundary in this section of a tectonic map?
A) The seafloor is spreading.
B) Two continental plates are colliding.
C)An oceanic plate is subducting.
D) Two plates are sliding past each other.
Answers
The sea floor is spreading is the correct option. Deep ocean trenches, volcanoes, island arcs, undersea mountain ranges, and fault lines are examples of plate tectonic characteristics.
Describe the earth's crust:The Earth's outer crust (the lithosphere) is made up of tectonic plates that move on top of a heated, moving mantle layer known as the asthenosphere. Convection currents created by heat in the asthenosphere lead tectonic plates to shift several millimeters each year relative to one other. A "plate border" is formed when two tectonic plates collide. There are three main types of plate borders, each of which is related with the production of different geologic characteristics.
When is a convergent boundary formed?A convergent plate boundary is formed when two tectonic plates clash. Subduction is the process by which one of the converging plates moves beneath the other.
Deep trenches are frequent structures generated where tectonic plates are subducted, and earthquakes are also prevalent near subduction zones. Fluids are released from the rock when the sinking plate goes further into the mantle, causing the overlying mantle to partially melt. The new magma (molten rock) rises and may erupt violently to generate volcanoes, which frequently form arcs of islands along the convergent boundary.
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Name one disadvantage of light microscopes.
Answers
Answer: Bad Resolution.
Explanation:
When Shontrelle sits in a certain chair at her eye doctor's office , she finds herselt blinking more than normal . She wonders if this is related to the fact that every time she sits in that chair , her eye doctor shoots a puff of air in her eyes , making her blink . What is the unconditioned stimulus ?
Answers
An unconditioned stimulus is a stimulus that leads to an automatic response.
Each time she sat in the chair the doctor will shoot a puff of air in her eyes, which causes her to blink more.
The unconditioned stimulus is what causes her to blink which is the puff of air shoot in her eyes.
3. Which layer would you find nearest the surface?
A. O horizon
B. C horizon
C. A horizon
D. R horizon
E. B horizon
Answers
The layer of the soil that would you find nearest the surface is O horizon.
option A.
What is O horizon?Soil is a complex mixture of organic and inorganic materials that develop over time through the interaction of physical, chemical, and biological processes.
The O horizon is the top layer of soil that consists of decomposing organic matter such as;
leavestwigsother plant and animal materialThis layer is also known as the organic layer or leaf litter layer. The thickness of the O horizon varies depending on factors such as the amount of organic matter available, climate, and land use practices.
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Which are repeated, cyclic behavior patterns related to external stimuli? Check all that apply.
eating
panting
Ohibemating
shivering
Omigrating
Answers
Ohibemating and Omigrating
Explanation:
Hibernating and migrating are repeated, cyclic behavior patterns related to external stimuli.
Because hibernation is a behavior of yearly cycle.
It is a state when a body of animal start processing slower as compared to before because there is fall in their body temperature.
Similarly migration occurs when climate of particular region becomes uncomfortable for some species , they migrate from there. Like birds, when they do not get water because of hotness or dryness in the weather, they all migrate to the place for enough water.
Hence, option 'C and 'E' are correct.
Hibernating and Migrating are repeated, cyclic behavior patterns related to external stimuli. So, the correct options are C and E.
What is Cyclic behavior?Cyclic behavior is defined as a set of behaviors that are being performed on a regular basis. It is determined by 2 different stimuli:
External Stimuli Internal StimuliExternal stimuli are defined as factors which can cause cyclic behavior that have originated from outside organisms. Example of external stimuli would be hibernating and migrating where hibernating behavior is cyclical behavior influenced by climate and migrating behavior is cyclical behavior influenced by resource availability in a certain area.
Thus, Hibernating and Migrating are repeated, cyclic behavior patterns related to external stimuli. So, the correct options are C and E.
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An amino acid's unique characteristics is defined by the ________.
Answers
Chemicals given off by the systemic capillary blood to the perivascular tissues often include which of the following?
Glucose
Ammonia
Antibodies
O Oxygen
Hormos
Carbon dioxide
Answers
Oxygen is carried from systemic capillary blood to the perivascular tissues
Systemic capillary flow.Systemic circulation blood flow help to carry oxygenated blood from the left ventricle passing through the arteries, to the capillaries in the tissues of the body. The deoxygenated blood returns from the tissue capillaries through a system of veins to the right atrium of the heart.
Therefore, Oxygen is carried from systemic capillary blood to the perivascular tissues
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Which of the following statements is not true of lipids?
a. they are the primary source of energy for bodily functions.
b. they are digested and absorbed in the small intestines.
c. they are made of long chains of triglycerides and fatty acids.
d. they are the source of fat-soluble vitamins in the body.
Answers
Organisms that gain energy by eating food are called:
Answers
Answer:
Heterotrophs or consumers
Explanation:
This are organisms that cannot produce their own food. They rely on autotrophs ( plants or producers ) for food. Most of the times these are normally animals.
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What does dna turn into?
Answers
Answer:
rna
Explanation:
it turns in rna and I do t wanna type more
While visiting Wave Rock in Australia, you observe streaks of minerals present on the landform. What natural process most likely caused the streaking?
Answers
The answer is deposition
Answer:
Deposition would have most likely caused the streaking.
Explanation:
Deposition is the laying down of sediment carried by wind, water, or ice. Sediment can be transported as pebbles, sand & mud, or as salts dissolved in water. Salts may later be deposited by organic activity or by evaporation.
One example of deposition is the process by which, in sub-freezing air, water vapor changes directly to ice without first becoming a liquid. This causes the water vapor to change directly into a solid. Another example is the soot that is deposited on the walls of chimneys.
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Which is NOT a heat transfer process? Radiation Conduction Convection Rotation
Answers
Answer:
Rotation
Explanation: Rotation is the process in which the object moves in a circular pattern this does not usually heat up that object
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Answer:
D: Rotation
Explanation:
Rotation refers to the process of an object going round and round in circles with no actual destination.
that is it goes in circles to stop any where
Why is it said that natural selection acts on phenotypes rather than on the genetic material of organisms?
Answers
Answer:
It's because an organism's phenotype, or physical traits, are what truly decide whether it can reproduce and pass on its genotype to the following generation.
Because the phenotype of an organism represents the alleles that are actually expressed in that organism, natural selection affects that phenotype.
Explanation: