If 15% of a DNA molecule consists of thymine, what percentage must there be of the
other bases?
Answers
Answer:
If thymine makes up 15% of the bases in a certain DNA sample, what percentage of bases must be cytosine? If the DNA is double stranded, A = T and G = C. If T = 15%, then C = 35%.
Related Questions
What do mitochondria do in healthy cells, and ny had defective mitochondria caused
David to lose his vision?
Answers
Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.
What will happen if have a defective mitochondria?Defects in mitochondria, the body's energy producers that may be found inside practically all cells, are the root cause of mitochondrial disorders. mitochondrial myopathies are mitochondrial diseases that create noticeable muscular issues, while mitochondrial encephalomyopathies are mitochondrial disorders that cause noticeable muscular and neurological abnormalities.Several of the syndromes linked to mitochondrial disease include Barth syndrome, Chronic progressive external ophthalmoplegia, Kearns-Sayre syndrome, Leigh syndrome, Mitochondrial DNA depletion syndromes , Mitochondrial encephalomyopathy, Lactic acidosis, and stroke-like episodes, Mitochondrial neurogastrointestinal encephalomyopathy, Myoclonus epilepsy with ragged red fibers, Neuropathy, ataxia, and retinitis pigmentosa , Pearson syndrome.The mtDNA mutation that causes NARP also causes MILS, and the two disorders can coexist in the same family. NARP can cause developmental delay, seizures, and dementia in addition to the primary symptoms for which it is called.To learn more about mitochondria refer :
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two adaptations that have helped all flowering plants succeed are
Answers
Flowering plants have two adaptations that have helped them succeed: the ability to produce seeds enclosed in fruits, which allows for efficient dispersal, and the development of flowers, which attract pollinators and increase the chances of successful reproduction.
These adaptations have allowed flowering plants to become the most diverse and widespread group of plants on the planet.
Two adaptations that have helped all flowering plants succeed are:
1. Pollination mechanisms: Flowering plants have evolved various pollination mechanisms, such as the production of brightly colored flowers, sweet nectar, and attractive scents. These adaptations attract pollinators such as insects, birds, and mammals, which transfer pollen from one flower to another, leading to fertilization and the production of seeds. This increases genetic diversity and improves the chances of survival for the plant species.
2. Seed dispersal strategies: Flowering plants have developed diverse seed dispersal strategies to spread their offspring over a larger area, increasing their chances of survival. These adaptations include producing seeds with structures that facilitate wind dispersal (e.g., dandelion seeds), animal dispersal (e.g., seeds with burrs that stick to fur), or even ballistic dispersal (e.g., seeds that are forcibly ejected from the parent plant).
These two adaptations - effective pollination mechanisms and diverse seed dispersal strategies - have played a significant role in the success of flowering plants in various environments.
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Can you help me with this question?
Answers
The statement that describes vertebrate species during embryologic development is
They start off very similar but take different developmental paths as they grow; option DWhat are vertebrates?Organisms with an internal backbone, sometimes known as a vertebra, are referred to as vertebrates. They have a robust bone skeleton that anchors muscle and supports the body's tissue. Invertebrates are defined as animals without spines.
Vertebrate species exhibit significant commonalities early in their embryologic development, which is a reflection of their shared heritage.
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Which observation(s) of the medium ground finch (Geospiza fortis) by Peter and Rosemary Grant verify Darwin's selection hypothesis? Check all that apply.
a. considerable variation existed in the beak size and shape of this finch
b. the medium ground finch showed assortative mating according to beak size
c. beak shape (depth) varied with the dryness of the year
d. offspring were similar to parents in beak size and shape
Answers
The observations of the medium ground finch (Geospiza fortis) by Peter and Rosemary Grant that verify Darwin's selection hypothesis are:
a. considerable variation existed in the beak size and shape of this finch
b. the medium ground finch showed assortative mating according to beak size
c. beak shape (depth) varied with the dryness of the year
d. offspring were similar to parents in beak size and shape
These observations support Darwin's selection hypothesis because they show that there is variation within the population, that certain traits are more favourable in certain environments, and that these favourable traits are passed on to offspring. Assortative mating also supports the idea that certain traits are favoured and will become more common in the population.
All of these observations are consistently favourable to the process of natural selection, which is the basis of Darwin's selection hypothesis.
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After earthquakes, hot springs sometimes stop bubbling, and new hot springs form. Why might this be
Answers
Answer:
The magma moved. The crystaline water is no longer being heated by the magma so it stops being a hot spring.
Answer:
The magma melts
Explanation:
Disaster-Risk-Reduction-in-the-Philippines-Status-Report-2019.
Answers
The Disaster Risk Reduction Status Report 2019 for the Philippines highlights the progress made by the country in minimizing risks and vulnerabilities associated with natural disasters.
The report emphasizes the government's efforts in improving early warning systems, disaster preparedness, and response measures, as well as the strengthening of institutional capacities to reduce the impact of disasters on the population.
The National Disaster Risk Reduction and Management Council (NDRRMC) and the United Nations Development Programme (UNDP) worked together to create the report with assistance from a number of governmental entities, local governments, civil society groups, and other stakeholders.
It also discusses the challenges faced by the country in achieving its DRR goals and provides recommendations for strengthening DRR efforts.
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Due RN pls help!!!
Summarize the nervous system’s influence on the respiratory system.
a. It stimulates pathogen response.
b. It regulates breathing rate.
c. It controls muscle contraction.
d. It regulates heart rate.
Answers
Answer:
C
Explanation:
It controls muscle contraction
Answer:
C
Explanation:
Breathing pretty much requires complex interactions of central nervous system with the respiratory system. Therefore as you breathe muscle contraction occurs making the nervous system and respiratory system work hand in hand.
hope this makes sense.
:)
Henry wanted to know how fast his pet tortoise could walk.
First, he placed a nice leaf of lettuce at one end of his patio. Then, he placed his tortoise 5 meters away from the lettuce and recorded its position and time as it moved toward the lettuce.
The chart below shows Henry's observations.
After 24 seconds, how far away from the starting point was the tortoise?
A. 4 meters
B. 0 meters
C. 2 meters
D. 1 meter
Answers
Answer:
2 meters
Explanation:
on the table, the number to the left of 24 is 2, showing its 2 meters in 24 seconds
Questi
net
5 Which organic molecules supply energy to cells? Choose two
Answers
Answer:
Complex organic food molecules such as sugars, fats, and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together.
Two organic molecules that supply energy to cells are carbohydrates and lipids.
How do they supply energy ?Carbohydrates are the body's main source of energy. They are made up of carbon, hydrogen, and oxygen, and they can be simple sugars, such as glucose, or complex carbohydrates, such as starch and glycogen. Carbohydrates are broken down in the body to release glucose, which is then used for energy.
Lipids are also a source of energy for the body. They are made up of carbon, hydrogen, and oxygen, and they can be fats, oils, or waxes. Lipids are broken down in the body to release fatty acids, which can then be used for energy.
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Since the beginning of life,____% of living things have lived in the water.
Answers
Since the beginning of life, **approximately 70%** of living things have lived in the water.
Water has been a crucial environment for life on Earth, providing a habitat for a diverse range of organisms. Throughout evolutionary history, various forms of life, including microorganisms, plants, and animals, have adapted to aquatic ecosystems. The oceans, rivers, lakes, and other bodies of water have served as homes for countless species and have supported complex ecosystems. While life has also successfully colonized terrestrial environments, the dominance of aquatic life for a significant portion of Earth's history highlights the importance of water as a vital medium for sustaining diverse forms of life.
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The arteries of the systemic circuit carry ______________ blood, and the arteries of the pulmonary circuit carry ______________ blood.
Answers
The pulmonary circuit's arteries carry deoxygenated blood, whereas the systemic circuit's arteries carry oxygenated blood.
What do the systemic circuit's arteries transport?The left ventricle pumps oxygenated blood to the capillaries in the body's tissues via systemic circulation, which travels through the arteries. The deoxygenated blood leaves the tissue capillaries and travels through a network of veins back to the right atrium of the heart.Blood with little oxygen is transported from your heart to your lungs by your pulmonary arteries. This job is essential, Your blood must go to your lungs in order to absorb oxygen and expel waste materials like carbon dioxide. Your heart then receives this blood back and pumps it to the rest of your body.The pulmonary circuit's arteries carry deoxygenated blood, whereas the systemic circuit's arteries carry oxygenated blood.To learn more about arteries refer to:
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HURRRRRYYYY ITS DUEEEEEEEEEE
A lunar eclipse results when:
A.
The Moon passes into the Earth's shadow.
B.
The Earth passes in the Moon's shadow.
C.
Clouds block light from the Moon.
D.
The Sun passes into the Earth's shadow.
Answers
Answer:
A) The Moon passes into the Earth's shadow.
Explanation:
Your friend tells you that she saw a bright object with a
tail that lasted a few moments in the night sky. She thinks it
might have been a comet. Is she correct? Why or why not?
If not, what did she likely see? Write your answer below in
complete sentences.
Please Hurry!!! Thank you
Answers
probably not, it misht be a satelite, and it burns when it enter in our atmosphere
Answer:
no it was most likely a meteor because meteors burn quick in the atmosphere
Explanation:
Explain the processes involved in the transportation of absorbed
nutrients throughout the body.
Answers
Answer:
Absorption: The process of absorbing nutrients occurs primarily in the small intestine. Once the food is broken down into smaller molecules through digestion, these molecules are absorbed into the bloodstream. For example, carbohydrates are broken down into simple sugars, proteins into amino acids, and fats into fatty acids and glycerol.
Circulatory System: The circulatory system, composed of the heart, blood vessels, and blood, plays a crucial role in transporting absorbed nutrients. The blood vessels form an extensive network that reaches all tissues and organs in the body.
Hepatic Portal System: After absorption, most of the nutrients are transported to the liver through a specialized system called the hepatic portal system. This system ensures that the liver, which performs various metabolic functions, receives a concentrated supply of nutrients before they are distributed throughout the body.
Bloodstream Transport: Once in the bloodstream, nutrients are carried by the plasma, the liquid component of blood. Different nutrients use specific mechanisms for transport:
Glucose: It is transported by facilitated diffusion or active transport, depending on the concentration gradient, with the help of insulin.
Amino Acids: They are transported through the bloodstream by specific carrier proteins.
Fats: Dietary fats are initially packaged into structures called chylomicrons and transported through the lymphatic system before entering the bloodstream. Once in the bloodstream, fats are carried by lipoproteins such as low-density lipoprotein (LDL) and high-density lipoprotein (HDL).
Distribution to Tissues: As the blood circulates, nutrients are distributed to various tissues and organs according to their specific needs. Nutrients are delivered to cells through the capillaries, the smallest blood vessels in the body, which have thin walls that allow for the efficient exchange of nutrients and waste products.
Cellular Uptake: Nutrients are taken up by cells through various mechanisms. For instance, glucose enters cells with the help of insulin, while amino acids are transported into cells through specific carrier proteins. Fats are taken up by cells through receptor-mediated endocytosis or by diffusion.
Metabolism: Once inside the cells, nutrients undergo metabolic processes to produce energy or build new molecules. Glucose, for example, can be metabolized through glycolysis, the Krebs cycle, and oxidative phosphorylation to generate ATP, the cell's energy currency.
Waste Removal: Metabolic byproducts, such as carbon dioxide and urea, are generated during nutrient metabolism. These waste products are transported back into the bloodstream and eventually eliminated from the body through the lungs (carbon dioxide) or the kidneys (urea).
It's important to note that different nutrients may have different transport mechanisms and pathways. The body's ability to efficiently transport and utilize absorbed nutrients is vital for maintaining proper functioning and overall health.
How do i find out the percentages?
Answers
Answer:
Explanation:
The following formula is a common strategy to calculate a percentage:
1- Determine the total amount of what you want to find a percentage.
2- Divide the number to determine the percentage.
3- Multiply the value by 100.
Consider the diagram of reproduction of yeast cells. Yeast can reproduce both asexually and sexually. During sexual reproduction, alpha or a cells produce ‘a-factor’, which signals the presence of an a cell to neighbouring α cells and the a cells also respond to α factor. Each cell grows a projection towards the opposite cell and this response of haploid cells to the mating factors of the opposite mating type allows for conjugation between a and α cells, but not between cells of the same mating type. What is the advantage to this type of reproduction?
Answers
Sexual reproduction boosts genetic diversity while asexual reproduction allows for an increase in the number of clonal individuals, hence option D is correct.
How do yeasts reproduce?The benefit of an asexual-sexual style of reproduction, such as that which takes place in yeast cells, stems from the fact that
Our findings corroborate the idea that the benefit of sexuality resided in the eradication of harmful mutations because sex boosts mean fitness in an environment to which the populations were well suited, but not in an environment to which new adaptation occurred.
Therefore, producing large numbers of cells in a short period of time.
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The given question is incomplete, so the most probable complete question is,
Consider the diagram of reproduction of yeast cells. Yeast can reproduce both asexually and sexually. During sexual reproduction, alpha or a cells produce ‘a-factor’, which signals the presence of an a cell to neighbouring α cells and the a cells also respond to α factor. Each cell grows a projection towards the opposite cell and this response of haploid cells to the mating factors of the opposite mating type allows for conjugation between a and α cells, but not between cells of the same mating type. What is the advantage of this type of reproduction?
A) Survival of the fittest.
B) The production of diploid cells.
C) Genetic variation in the gene pool.
D) Producing large numbers of cells in a short period of time.
fetal pigs receive nourishment from their mother through the
Answers
fetal pigs receive nourishment from their mother through the umbilical cord. The umbilical cord is a flexible tube-like structure that connects the fetus to the placenta, which is attached to the wall of the mother's uterus.
The placenta serves as the interface between the mother's circulatory system and the developing fetus.
Within the umbilical cord, there are blood vessels that facilitate the exchange of oxygen, nutrients, and waste products between the mother and the fetus. The two main types of blood vessels in the umbilical cord are the umbilical arteries and the umbilical vein.
The umbilical arteries carry deoxygenated blood and waste products from the fetus back to the placenta, where they are removed and filtered out of the mother's system. On the other hand, the umbilical vein carries oxygenated blood and nutrients from the placenta to the fetus, providing it with the necessary nourishment for growth and development.
This exchange of substances occurs through a process called placental circulation. Oxygen and nutrients from the mother's bloodstream pass through the walls of the placenta and enter the umbilical vein, which then carries them to the fetal circulatory system. At the same time, waste products such as carbon dioxide are transferred from the fetal blood into the mother's bloodstream through the walls of the placenta. This exchange of gases, nutrients, and waste products allows the fetus to receive the necessary nourishment and oxygen for its development while eliminating waste.
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(7) What type of fossil forms when a buried organism decays or is dissolved, but the original shape is preserved in the sediment? (a) body fossil (b) trace fossil (c) mold fossil (d) cast fossil (8) W
Answers
(7) a fossil that preserves the original shape of an organism in sediment is called a mold fossil, (8) Figure 3 represents a brachiopod, and (9) Fossils are primarily identified based on changes in their morphology. The correct answers are 7. C, 8. C, and 9. A.
(7) The type of fossil that forms when a buried organism decays or is dissolved, but the original shape is preserved in the sediment is called a mold fossil. This type of fossil is formed when the remains of an organism leave an impression or cavity in the surrounding sediment. Over time, minerals fill in the space left by the organism, creating a replica of the original shape. Therefore, The correct answer is option C.(8) To identify which of the figures is a brachiopod, we need to look for specific characteristics of this type of organism. Brachiopods are marine animals that have two shells, and they resemble clams or bivalves. Based on this description, we can determine that Figure 3 is a brachiopod, as it has two shells and the overall shape is similar to that of a clam. Therefore, The correct answer is option C.(9) Fossils are most often identified based on changes in their morphology, which is easily recognizable, even in the field. Morphology refers to the physical shape, structure, and characteristics of an organism. By examining the size, shape, and other visible features of a fossil, scientists can make inferences about its identity and classify it into different groups or species. Therefore, The correct answer is option A.For more questions on fossils
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The correct question would be as
(7) What type of fossil forms when a buried organism decays or is dissolved, but the original shape is preserved in the sediment? (a) body fossil (b) trace fossil (c) mold fossil (d) cast fossil (8) Which of the following is a brachiopod? (a) Figure 1 (b) Figure 2 (c) Figure 3 (d) Figure 4 (9) Fossils are most often identified based on changes in their which is easily recognizable, even in the field (a) morphology (b) DNA (c) domain (d) lifestyle
What is the name of a species that is highly connected to the entire food web and whose loss may result in ecosystem collapse
Answers
PLS HELP I WILL GIVE BRAINLIEST FOR FIRST ANSWER!! Which of these structures relies on the circulatory system to transport the chemical compounds that it makes to other body structures?
A. neuron
B. salivary gland
C. sweat gland
D. pituitary gland
Answers
Answer:
D. pituitary gland
~+. lil more info .+~
The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). The system is responsible for the flow of blood, nutrients, oxygen and other gases, and as well as hormones to and from cells.
How might the role of the mucous membrane in the lungs be different from the role of the cell membrane surrounding a normal blood cell ?
Answers
Answer:
Mucous membrane, membrane lining body cavities and canals that lead to the outside, chiefly the respiratory, digestive, and urogenital tracts. Mucous membranes line many tracts and structures of the body, including the mouth, nose, eyelids, trachea (windpipe) and lungs, stomach and intestines, and the ureters, urethra, and urinary bladder.
Look at DNA, a polymer, and nucleotide, a monomer, on the nucleic acid page. There are sugar molecules within these structures. How many sugar molecules are in DNA and the nucleotide?
Answers
Answer: 1 sugar molecule
Explanation:
The basic building block of DNA is called a NUCLEOTIDE. A nucleotide is made up of one sugar molecule, one phosphate molecule and one of the four bases.
how many molecules of glucose are produced in photosynthesis
Answers
Answer: One molecule of glucose (C6H12O6) and six molecules of oxygen (O2)
Explanation:
Six molecules of carbon dioxide (CO2) combine with six molecules of water (H2O) in the presence of light energy. This produces one molecule of glucose (C6H12O6) and six molecules of oxygen (O2)
Watery perspiration is an example of a(n) ____ secretion.... merocrine apocrine mucous holocrine serous
Answers
Answer:
apocrine
Explanation:
im cool. Brainliest?
what specific reflex tested in lab was initiated by tapping a tendon just below the knee between the patella and radial tuberosity?
Answers
The specific reflex you're referring to, which is tested in the lab by tapping the tendon just below the knee between the patella and radial tuberosity, is called the patellar reflex, also known as the knee reflex.
The specific reflex tested in lab that was initiated by tapping a tendon just below the knee between the patella and radial tuberosity is the patellar reflex, also known as the knee reflex. This reflex involves the stimulation of the sensory receptors in the muscle spindle of the quadriceps muscle group, which sends a signal to the spinal cord. The spinal cord then sends a motor signal back to the quadriceps muscle, causing it to contract and resulting in the characteristic extension of the lower leg. The patellar reflex is a simple and important test of neurological function, and its absence or abnormality can indicate various neurological disorders.
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Im studying human scalp does anyone know what this is?
Answers
The picture represents the atypical mole or also known as dysplastic nevi. Such types of moles are looking unusual and have irregular features under the microscope.
What is a Human scalp?A human scalp may be defined as the fraction of the envelope of the human head usually covered with hair in both sexes. It is the region that is composed of soft tissue layers that cover the cranium.
The dysplastic nevi are although benign in nature but significantly have a potent threat to melanoma which is a dangerous form of skin cancer.
Such types of moles are painful, itching, crusting, and swelling with the duration of time. They are required to be checked immediately by a trusted dermatologist.
Therefore, the picture represents the atypical mole or also known as dysplastic nevi.
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Less visible spider webs catch more insects than more visible webs. However, some spiders build webs that include very sizable zigzag lines. What benefits might the spider gain by building such a visible web? Select all correct answers.
Webs with zigzag lines may be easier to build than those without the lines, saving the spider energy
The lines may help to camouflage the spider from potential predators
Spiders with lower fitness make webs with visible zigzag lines. Eventually this trait will be selected against by natural selection
The visible lines may keep larger animals from crashing into the web and destroying it, so the spider does not need to rebuild the web
Answers
Answer:
The visible lines may keep larger animals from crashing into the web and destroying it, so the spider does not need to rebuild the web
The lines may help to camouflage the spider from potential predators
Explanation:
Trust me I just took a quiz with this exact question lol
The visible lines may keep larger animals from crashing into the web and destroying it, so the spider does not need to rebuild the web.
What is a spider web?A spider web is built by sipder to serve as a sort of bridge when travelling or as a kind of protection but most importantly to trap insects for food.
The benefits that a spider may gain by building a visible web is that the visible lines may keep larger animals from crashing into the web and destroying it, so the spider does not need to rebuild the web.
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urgent!!
In gravitropism, auxin affects the cells in shoots and roots in opposite ways.
How are the two effects different?
OA. In stems, more auxin causes cells to grow longer. In roots, less
auxin causes cells to grow longer.
B. In stems, less auxin causes cells to strengthen. In roots, more
auxin causes cells to strengthen.
C. In stems, less auxin causes cells to shorten. In roots, more auxin
causes cells to shorten.
OD.
stems, more auxin causes cells to grow wider. In roots, less
auxin causes cells to grow wider.
Answers
If the root is not developing downwardly vertically, auxin builds up in the lower portions of the root, preventing cell elongation and leading the root to bend toward gravity.
What does 'cell elongation' mean?Any persistent enlargement of cells that have already been created during differentiation will be referred to as elongation. Cell elongation can also be described as any large boost in the cell wall's surface since the size of the a plant is dictated by the size of its surface.
What results in cell lengthening?By encouraging wall loosening by cleaving these connections, auxin lengthens stem and coleoptile cells. New cell membrane polymers may be intercalated in conjunction with this process.
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What do we call the master control
genes?
A. manipulating genes
B. hox genes
C. omega genes
Answers
Answer:
Hometic genes
Explanation:
BEcause it is
what is the tradeoff for enhanced mobility in the glenohumeral joint structure?
Answers
The tradeoff for enhanced mobility in the glenohumeral joint structure is decreased stability and increased susceptibility to dislocation or injury.
The glenohumeral joint, which connects the upper arm bone (humerus) to the shoulder blade (scapula), is designed to allow for a wide range of motion. However, this enhanced mobility comes at a cost. The joint is relatively shallow, making it less stable and more prone to dislocation or injury compared to other joints in the body.
Additionally, the muscles and ligaments surrounding the joint must work harder to maintain stability during movement, which can lead to strains or tears. These tradeoffs are particularly relevant for athletes and individuals who engage in repetitive overhead motions, such as baseball pitchers or swimmers, as they are at a higher risk for shoulder injuries.
Therefore, it is important to balance mobility and stability through targeted strengthening exercises and proper training techniques to reduce the risk of injury and improve overall joint health.
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