which one of these arteries is not a branch off the arch of the aorta select one: a. left subclavian b. left common carotid c. right common carotid d. brachiocephalic
Answers
Option C) Right common carotid - The arch of the aorta has just three branches, which are as follows:
brachiocephalic
Aorta of the left common carotid
Subclavian artery on the left
The left common carotid artery originates directly from the arch of the aorta, while the right common carotid artery branches off of the brachiocephalic trunk. The common carotid artery splits into the external and internal carotid arteries at the top edge of the thyroid cartilage.
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Related Questions
Stomata are tiny openings found in plant leaves. specialized cells known as guard cells surround the stomata and open and close the openings. when it is very hot, plants may close their stomata to prevent water loss. when plants close their stomata, what else is affected?
Answers
When plants close their stomata, the carbon dioxide that is required for photosynthesis cannot be absorbed by plants.
The littlest openings in plant leaves are called stomata. Guard cells, which are specialized cells that open and close the stomata, encircle the stomata. Plants might close their stomata to save water during incredibly hot circumstances. When plants close their stomata, they stop the loss of water, but photosynthesis may be affected.
Respiration in leaves occurs when carbon dioxide is released into the atmosphere by diffusion of oxygen into the leaf cells via stomata. Each stoma is surrounded by two guard cells that can open and close in response to the environment. When there is a lot of moisture, the guard cells swell, opening the stoma and allowing gas to flow through.
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PLEASE Help with question 16
Answers
The description of the given terms are as follows,
1. Cell plate - divides plant cells made of golgi bodies
2. Spindle - made of microtubules
3. Tumor - cluster of abnormal cells
4. Cancer - cells can skirt checkpoints
5. Telomere - shortens with age
6. Cleavage furrow - pinching
7. Centrosomes - cell organizing center
The cell cycle is a sequence of events in which the cells divide into daughter cells at the end of the process. It is divided into interphase and the M phase which be either meiosis or mitosis.
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A model of a gene, DNA, and a chromosome is shown here. A researcher tags the gene with a heavy radioactive isotope (P-32). Which statement predicts the outcome of the radiolabeling on the gene, DNA, and chromosome while differentiating between the three components of the model?
Answers
Answer:
The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes
Explanation:
Genes are made of DNA, but there are many (numerous) genes found along chromosomes. Only a small portion of the chromosome will be radiolabeled.
The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes.
What is the relationship among DNA a gene and a chromosome?
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
Thus, The gene will be radiolabeled, but only a portion of the chromosome will display P-32 because genes are smaller than chromosomes.
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A farmer always plants pea and wheat in the same field. Why do you think he does that?
Answers
Answer:
Mixed cropping leads to improvement of fertility of soil hence increases the crop yield.the crops mixed are related symbiotically helping each other in need.it also helps during crop failure due to abnormal weather conditions as high or low rainfall etc. ultimately it is logically and economically helpful to farmers with low income due to low yield
Explanation:
please help!!!!!! have a good day.
Answers
Answer:
its just the opposite letters g+c a+t or g+c and a+u
Explanation:
To maintain homeostasis, materials have to move across cell membranes. Some examples of these movements are listed below.
1. Amoeba consuming a bacterium
2. Somatic cell absorbing cholesterol from the blood
3. Brain neuron taking up glucose from the blood
4. Paramecium absorbing water from its surroundings
5. Pancreatic cell secreting insulin into the blood
Which three processes require the cell to spend energy?
A. 1, 2 and 5
B. 1, 3 and 5
C. 2, 3 and 4
D. 3, 4 and 5
Answers
Answer:
The three processes that require the cell to spend energy are typically those that move materials against their concentration gradient or require the cell to perform active transport. Based on this criteria, the correct answer is:
B. 1, 3 and 5
Explanation:
1. Amoeba consuming a bacterium requires energy as the cell engulfs the bacterium using its cell membrane.
2. Somatic cell absorbing cholesterol from the blood requires energy as the cell needs to move the cholesterol against its concentration gradient.
3. Brain neuron taking up glucose from the blood requires energy as the glucose needs to be transported against its concentration gradient.
Processes 4 and 5 do not require the cell to spend energy as the paramecium simply absorbs water from its surroundings (which is a passive process), and pancreatic cell secreting insulin into the blood is a facilitated diffusion process.
do deep water organisms have high or low metabolic rate please explain
Answers
Solution:
The deep water organism have low metabolic rate.
In general the metabolic rates of marine organisms in the deep sea are perceived to be low. This is due to the low temperature that prevails in the depths.
How do the Sun's luminosity and apparent brightness compare with those of other stars? O A. The Sun's luminosity is average, and it has the least apparent brightness B. The Sun's luminosity is above average, and it has the greatest apparent brightness. O C. The Sun's luminosity is average, and it has the greatest apparent brightness O D. The Sun's luminosity is below average, and it has the least apparent brightness.
Answers
Answer: C. The Sun's luminosity is average, and it has the greatest apparent brightness
Explanation:
Answer:
C
Explanation:
I took the test on AP3X
What is the best description of the role of decomposers in the carbon cycle?
They release the carbon that remains in the bodies of dead organisms.
They absorb carbon from carbon dioxide in the atmosphere.
They change carbon dioxide into a form that organisms can use.
They prevent carbon from escaping into the atmosphere.
Answers
Answer:
the first one im pretty sure
Answer:
Its A :>
Explanation:
How can recycling a nonrenewable resource improve sustainability?
a. it reduces consumer demand for the resource.
b. it allows the resource to be reused indefinitely.
c. it increases efficiency of resource use in manufacturing.
d. it ensures that resources are replenished naturally.
Answers
By guaranteeing that resources would be regenerated organically, recycling contributes to sustainability.
Instead, recycling non-renewable materials improves biodiversity resilience, improves human health, and helps to keep the environment clean. Recycling is essential to ecology because it prevents recyclable items from being dumped in landfills.Recycling provides a substantial environmental benefit by lowering pollution of air and water and saving energy. Recycling lowers greenhouse gas emissions including such carbon dioxide, gas, nitrous oxide, and chlorofluorocarbons, which contribute to global warming.Every day, tonnes of hazardous garbage are diverted away from landfills thanks to recycling, which also helps minimise the amount of waste that ends up there. As a result, there is a lower chance that landfills may release hazardous substances and other poisonous chemicals into the environment. Landfills that produce greenhouse gases could be lessened through recycling.
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Occipital and parietal lobes do?
Answers
Answer:Each side of your brain contains four lobes. The frontal lobe is important for cognitive functions and control of voluntary movement or activity. The parietal lobe processes information about temperature, taste, touch and movement, while the occipital lobe is primarily responsible for vision.
Explanation:
1
The observation by Darwin that finches of different species on the Galápagos
Islands have many similar physical characteristics supports the conclusion that
these finches *
(1 Point)
A.all eat the same type of food.
B.originated from a common ancestor.
C.have the ability to interbreed.
D. acquired traits through use and disuse.
No links or bots please and thank you
Answers
Answer:
D
Explanation:
I think it was to do with beak lengths
How does antibacterial resistance relate to natural selection?
Answers
Answer: When bacteria are initially exposed to an antibiotic, those most susceptible to the antibiotic will die quickly, leaving any surviving bacteria to pass on their resistant features to succeeding generations.
Explanation: It's basically relating to the Survival of the Fittest and Antibiotics can easily overpower Bacteria.
Which of the following is a correct sequence of events in cellular respiration?
Answers
The correct sequence of events in cellular respiration is option a: glycolysis, citric acid cycle, electron transport chain.
During cellular respiration, glucose is broken down to produce energy in the form of ATP. The process starts with glycolysis, which occurs in the cytoplasm and involves the breakdown of glucose into pyruvate molecules. Glycolysis generates a small amount of ATP and NADH.
The pyruvate molecules produced in glycolysis enter the mitochondria, where the citric acid cycle, also known as the Krebs cycle, takes place. In this cycle, the pyruvate is further broken down, releasing carbon dioxide and generating NADH and FADH2 as electron carriers. The citric acid cycle also produces a small amount of ATP.
The electron carriers NADH and FADH2 then participate in the electron transport chain, which is located in the inner membrane of the mitochondria. In the electron transport chain, the electrons from NADH and FADH2 are transferred through a series of protein complexes, creating a flow of electrons that drives the synthesis of ATP. This process is known as oxidative phosphorylation.
Therefore, the correct sequence of events in cellular respiration is glycolysis, citric acid cycle, and electron transport chain, as stated in option a.
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Question
Which of the following is the correct sequence of events in cellular respiration?
a. glycolysis, citric acid cycle, electron transport chain
b. glycolysis, preparatory reaction, citric acid cycle, electron transport chain
c. glycolysis, electron transport chain, preparatory reaction
d. citric acid cycle, glycolysis, electron transport chain, preparatory reaction
e. citric acid cycle, electron transport, glycolysis, preparatory reaction
Question 14 (2 points) The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called natural selection. O mutation. genetic drift. migration.
Answers
The process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
A mutation is a sudden and lasting alteration in the DNA sequence that can influence genetic variation. Changes in the DNA sequence can influence phenotype, which may or may not have an effect on an organism's fitness. Mutations occur spontaneously, either from errors in DNA replication or from exposure to mutagenic agents. Mutations may happen in either coding or non-coding regions of the DNA, and they can be either silent or expressed.
Evolution is a natural process that results in the gradual change of inherited characteristics in populations over generations. It is the process of alteration in the inherited characteristics of species over successive generations. In other words, it is the process of gradual changes that happen to species over time as they adapt to their environments. It can be defined as a change in the gene frequency in a population over time.
Types of Evolution 1. Natural Selection 2. Genetic Drift 3. Gene Flow 4. Mutation 5. Non-Random Mating 6. Admixture 7. Mutation Pressure 8. Genetic Draft 9. Bottleneck and Founder Effect 10. Sexual Selection the process of evolution that involves a change in the DNA sequence that leads to evolutionary change is called a mutation.
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What kind of mutation occurred in the DNA sequence below?
AGA – GGA – CCT original DNA sequence
AGA – GGG – ACC mutated DNA sequence
ANSWER CHOICES
-----
A -Nondisjunction
B - Substitution
C - Insertion
D - Deletion
Answers
Answer:
Substitution
Explanation:
Substitution is when one base replaced another which is what has happened here with A turning into G and T turning into a C.
Where is the youngest rock in the Atlantic Ocean found?
plz hurry
Answers
Answer:
Mid-Atlantic Ridge
Explanation:
This is because they are deep down, near the earth's crust .
In glycolysis, what starts the process of glucose oxidation? a) ATP b) ADP c) hexokinase d)FADH2 e) NADPH. a) ATP.
Answers
Hexokinase phosphorylates glucose involving ATP as the wellspring of the phosphate, delivering glucose-6-phosphate, a more responsive type of glucose. The correct answer is (C).
The most important phase in glycolysis is catalyzed by hexokinase, a chemical with expansive particularity that catalyzes the phosphorylation of six-carbon sugars.
The oxidation of glucose alludes to the breakdown of glucose into usable items like ATP. To go through oxidation, glucose goes through three distinct pathways — glycolysis, the Krebs cycle (otherwise called the citrus extract cycle), and oxidative phosphorylation by means of the electron transport chain.
The most important phase in glycolysis is catalyzed by hexokinase, a catalyst with expansive particularity that catalyzes the phosphorylation of six-carbon sugars. Hexokinase phosphorylates glucose involving ATP as the wellspring of the phosphate, delivering glucose-6-phosphate, a more responsive type of glucose.
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Which structure do sea slugs use to feed on their prey? A. Nematocysts B.an incurrent siphon C. A radula D. A mantle cavity
Answers
They sip sponges, coral, anemones, hydroids, tunicates, algae, bryozoans, and sometimes other nudibranchs. A radula, which moves back and forth to get and shred food like a cheese grater, is used by sea hares and nudibranchs to eat. The correct answer is C (A radula),
They consume a wide variety of organisms as they glide about, including hydroids, tunicates, sponges, anemones, and barnacles, to name just a few. At times, they will even consume other nudibranchs. Inside their mouth, they have a hard, toothed feeding structure called a radula that helps them break down food.
The venomous organelles of stinging cells called nematocysts are made by cnidarians like jellyfish. They are capable of mitigating a number of threats and are a highly effective defense mechanism. Despite their soft bodies, the sea slugs in the group Aeolida are virtually immune to these spiny javelins.
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How is pathogenic staphylococcus aureus distinguished from other species of staphylococcus?.
Answers
Given what we know, we can confirm that pathogenic staphylococcus aureus can be distinguished from other species given that it is coagulase positive.
What does it mean to be coagulase positive?This means that this exact type of bacteria has the ability to cause blood to coagulate, giving them their pathogenic nature. This can be extremely dangerous and even fatal to humans as it disrupts blood flow and leads to cardiac arrest.
Therefore, we can confirm that pathogenic staphylococcus aureus can be distinguished from other species given that it is coagulase positive.
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Drug Dosages. Thomas Young has 5 iggested the followiLe rule for caiculating the dosage of medicine for chidren 1 to 12 yr ofd. If a denctes the aduit. dosage (in midigrams) and if t is the child's ago (in years), then the child's dosage is given by the following function.
D(t)= at/t+12 Suppose the adult dosage of a substance is 280mg. Find an expression that gives the rate (in mg/year) of change of a child's cosage with respect to the child's age. D′(t)= What is the rate of change (in mg/year) of a child's dosage with respect to his or her age for a 3 -yr-old child? A 12 -yr-old child? (flound your answer to three decimal placesi) 3-yr-old _____ mg/year 12-yriold _____ mg/year
Answers
Given data: Adult dosage of a substance is 280mg. Rule for calculating dosage for children between 1 to 12 years of age is given by the function, D(t) = a * t / t + 12. To find the rate of change of this function with respect to the child's age, we need to differentiate the function with respect to t.
Let's differentiate this function with respect to t. d/dt [ D(t) ]= d/dt [ a * t / t + 12 ]
Using quotient rule,= [ a * (t + 12) - a * t ] / ( t + 12 )²= a / ( t + 12 )²
Thus, the rate of change of child's dosage with respect to child's age is given by D'(t) = a / ( t + 12 )².
Hence, the required expression is D'(t) = 280 / ( t + 12 )².
Now, substituting t = 3,
we get, D'(3) = 280 / (3 + 12)²
= 280 / 225
= 1.244 mg/year
Substituting t = 12,
we get, D'(12) = 280 / (12 + 12)²
= 280 / 576
= 0.486 mg/year
Therefore, the rate of change of a child's dosage with respect to his or her age for a 3-yr-old child is 1.244 mg/year and for a 12-yr-old child is 0.486 mg/year. We are given the formula, D(t) = a * t / t + 12, which represents the dosage for a child as a function of their age, t. To find the rate of change of this function with respect to the child's age, we need to differentiate the function with respect to t.
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a _____ is a large protruding pocket-like lesion filled with sebum.
Answers
A sebaceous cyst is a large protruding pocket-like lesion filled with sebum.
These cysts can occur anywhere on the body but are commonly found on the face, neck, and torso. They typically appear as small, painless lumps under the skin and can range in size from a few millimeters to several centimeters in diameter. The cysts are generally slow-growing and may remain unnoticed until they become inflamed or infected.
While sebaceous cysts are usually harmless, they can sometimes become uncomfortable or unsightly. In these cases, medical intervention may be necessary to remove the cyst or drain its contents. This can be done through a simple surgical procedure or, in some cases, through the use of a sterile needle to aspirate the contents of the cyst.
If a cyst becomes infected, it is essential to seek medical attention, as improper treatment can lead to complications or recurrence. It is also crucial not to attempt to squeeze or pop the cyst at home, as this can increase the risk of infection and scarring.
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WILL GIVE BRAINLIEST ANSWER. Which statement describes the relationship between breathing and cellular respiration in animals?
A. Carbon dioxide is inhaled and is a product of cellular respiration
B. Carbon dioxide is exhaled and is a product of cellular respiration
С. Carbon dioxide is exhaled and is a reactant of cellular respiration.
D. Cellular respiration and breathing are the same processes.
Answers
Answer:
B
Explanation:
The statement that describes the relationship between breathing and cellular respiration in animals is carbon dioxide is exhaled and is a product of cellular respiration. The correct option is B.
What is cellular respiration?Cellular respiration is a process of breakdown of food material and releasing energy into the blood. Oxygen is mixed with the food material and carbon dioxide is released out of the body.
Breathing is a process of taking in oxygen and taking out carbon dioxide from the body. Breathing is the first step of respiration, as oxygen is needed for the respiration process, which is done by breathing.
Carbon dioxide is a product of cellular respiration, and it is taken out of the body by breathing.
Thus, the correct option is B. Carbon dioxide is exhaled and is a product of cellular respiration.
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The statement. "Sounds that last from 1 to 3 seconds will be considered a
single chirp," is an example of
1) a controlled experiment
2) an operational definition
3) a manipulated variable
4) a responding variable
Answers
Answer:
an operational definition
Explanation:
Answer:
operational definition
Explanation:
An operational definition is a statement that describes how to measure a particular variable or define a particular term. For example, in this experiment you would need to determine what sounds will count as a single “chirp.”
Population Genetics
Describe:
How is a population described in population genetics?
Answers
Answer:
If they would look alike
Explanation:
Which enzyme would be most efficient an environment where pH level can fluctuate between acidic and basic
Answers
Answer:The pH range between 0.5 and 2.5 is optimal for the activity of pepsin , a common enzyme present in the stomach.
Explanation:
Question 8 of 25
The scientists who have contributed to our current body of knowledge were
from what part of the world?
OA. Mostly the Middle East
B. All areas of the world
OC. Mostly Europe
D. Only the United States
SUBMIT
Answers
Answer:
A. Mostly the middle east
What product(s) do plants produce during photosynthesis that is/are used by humans and other animals
Answers
Answer:
oxygen and sugar(glucose)
human consumes oxygen
animal that eats plants benefit from the sugar
The answer is glucose and oxygen.
What products of photosynthesis do humans and animals use?There's a product other than glucose that comes out of photosynthesis: oxygen. Animals breathe oxygen every minute of every day, and we breathe out carbon dioxide.
What products do plants produce during photosynthesis that are used by humans and other animals as reactants during cellular respiration?Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide.
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Explain the importance of the basement membrane
Answers
Basement membrane are important as they serve as the surface where epithelial and endothelial cells can reside, they provide mechanical support to the cells, act as barrier to separate tissues and also protect during mechanical stress.
Basement membrane is the specialized form of ECM that is made up of thin layer of cells. It is also known by the name basal lamina. The membrane is important for the correct sculpting of the tissues into their correct size and shape.
Endothelial cells are the cells found in the inner lining of blood vessels, lymph vessels, and the heart. Their function is to mediate the transport and exchange of substances.
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Which of the following characteristics does not describe DNA?
A - contains uracil
B - contains cytosine
C - contains thymine
D - stays in the nucleus
Answers
Answer:
C) contains thymine
Explanation:
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