Kerb's cycle-Which produces energy carriers called...
Answers
The Krebs cycle produces energy carriers called ATP (adenosine triphosphate), NADH (nicotinamide adenine dinucleotide), and FADH2 (flavin adenine dinucleotide).
The Kerb's cycle, also known as the Krebs cycle or the citric acid cycle, produces energy carriers called ATP (adenosine triphosphate), NADH (nicotinamide adenine dinucleotide), and FADH2 (flavin adenine dinucleotide). These carriers play a crucial role in cellular respiration and energy production within cells. These energy carriers are used to power various cellular processes and activities.
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Related Questions
Help I’ll give brainless please
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The mass of the wax after the melting would still be exactly 50 g
Law of conservation of massA cornerstone of physics and chemistry is the law of conservation of mass, commonly referred to as the principle of mass conservation. It asserts that mass cannot be created or removed in a closed system.
In other words, the total mass of a closed system remains constant over time, regardless of any physical or chemical changes that may occur within the system.
Since the mass of the wax would not change, it would be right to say that by this law, the melted wax would stull weigh 50g
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HELLPPPP MEEE ILL MARK YOU BRAINIESTTT PLEAASEEEEE IT IMPOORRTAANYTTT
Answers
Answer:
The correct answer is - option D.
Explanation:
Mendel also performed this type of dihybrid cross that the genes for pea shape color assort independently of each other.
In this punnet square: there is a genotype ratio close to 9:3:3:1 of 9 = round-seed plants with green pods, 3 = wrinkled-seed plants with green pods, 3 =round-seed plants with yellow pods, and 1 = wrinkled-seed plants with yellow pods.
This is an expected ratio with an independent assortment of dominant and recessive alleles.
Which of the following substances must be taken into the cell by the structure above labeled 3 because it is too large to pass through the cell membrane?
Answer
F
sodium
G
glucose
H
polysaccharide
J
potassium
Answers
Answer:
I think it's polysaccharide because it is made of 3 or more units of sugar
The substance polysaccharide must be taken into the cell by the structure above labeled 3 because it is too large to pass through the cell membrane. Thus, the correct option is C.
What is the cell membrane?A Cell membrane may be defined as a biological membrane that typically separates the inner environment of the cell with respect to the outside. It generally protects the cell from any external damage.
Being very large organic compounds, polysaccharides take large space to pass through the cell membrane. Polysaccharides are made up of three or more subunits of sugar.
The elements like sodium and potassium usually occur due to the presence of sodium-potassium pumps. While glucose is transported into the cell with the help of glut transporters.
Therefore, the substance polysaccharide must be taken into the cell by the structure above labeled 3 because it is too large to pass through the cell membrane. Thus, the correct option is C.
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Which of the following contributes to non point source pollution in water
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problems associated with heavy metals in the soil and their cleanup
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Heavy metals in the soil pose several problems, both for the environment and human health. These metals, including lead, arsenic, mercury, cadmium, and chromium, can accumulate in the soil through various sources such as industrial activities, mining, agriculture, and improper waste disposal.
The presence of heavy metals in the soil can lead to contamination of groundwater and surface water, affecting the surrounding ecosystems and biodiversity. In terms of human health, exposure to high levels of heavy metals can cause serious health problems, including respiratory issues, neurological disorders, organ damage, and even cancer.
Cleanup of soil contaminated with heavy metals is a challenging and complex task. Various remediation techniques are employed to mitigate the risks associated with heavy metal contamination.
These techniques include physical methods such as excavation and removal of contaminated soil, soil washing, and stabilization or immobilization of the metals. Chemical methods like soil flushing and soil vapor extraction can also be used.
Additionally, biological methods such as phytoremediation, which involves using plants to extract or neutralize heavy metals, and microbial remediation, where microorganisms are utilized to degrade or transform the contaminants, are employed.
The selection of an appropriate cleanup method depends on factors such as the type and concentration of heavy metals, the extent of contamination, the site conditions, and the intended land use after remediation.
It is important to consider the long-term effectiveness, feasibility, and cost-effectiveness of the chosen remediation approach. Proper management of contaminated soil and prevention of further heavy metal pollution are crucial to protect both the environment and human well-being.
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Most digestion in humans occurs in the first 25 centimeters of the 6-meter length of the small intestine called the _________________.
a. duodenum
b. omasum
c. jejunum
d. cecum
e. colon
Answers
Most digestion in humans occurs in the first 25 centimeters of the 6-meter length of the small intestine called the duodenum. The correct option is a
The small intestine is a vital organ in the digestive system responsible for the majority of digestion and nutrient absorption. It is approximately 6 meters long and consists of three main parts: the duodenum, the jejunum, and the ileum.
The first 25 centimeters of the small intestine is called the duodenum. This is where the majority of digestion takes place. The duodenum receives partially digested food from the stomach, along with digestive enzymes from the pancreas and bile from the liver. These digestive enzymes and bile help break down complex carbohydrates, proteins, and fats into simpler forms that can be absorbed by the body.
The duodenum also plays a crucial role in neutralizing the acidic contents that come from the stomach. This is important because the enzymes and bile in the duodenum work best in a slightly alkaline environment. The duodenum accomplishes this by releasing bicarbonate ions to counteract the stomach acid.
In summary, the duodenum is the first part of the small intestine where most digestion occurs. It receives partially digested food, pancreatic enzymes, and bile, and plays a critical role in breaking down nutrients for absorption.
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Modern plant-breeding techniques (artificial selection in action) have reduced genetic variability in many of our most commercially valuable plants. To most people, that would generate a shrug. However, a biology student that has studied evolution understands the problem with this. Briefly explain why there is an issue with this.
Answers
Answer:
There is an issue with the artificial selection.
Explanation:
There is an issue with this artificial selection because the genetic variability is reduced when we do again and again the artificial selection. In the artificial selection, the selected genes are combined with the one another and does not allow natural fusion or combination of genes that is responsible for the genetic variability in the organisms so that's why we can say that this artificial selection is an issue that reduce genetic variability.
The field of biology that studies the diversity of organisms and
their evolutionary relationships is called systematics.
Select one:
True
False
.......................................................
Answers
Answer:
True.
Explanation:
Hope this helps!
neurons can not transmit action potentials more rapidly than 500 or 800 hz, yet humans can hear sounds up to many khz. how can the inner ear encode high frequencies?
Answers
The inner ear is able to encode high frequencies through the use of different mechanisms such as the tonotopic organization of the cochlea and the amplification of sound waves by the outer hair cells.
The cochlea is divided into different sections, each of which responds to a specific frequency range. The hair cells within each section are tuned to respond best to a particular frequency, allowing for the encoding of a wide range of frequencies. The outer hair cells in the cochlea amplify the sound waves, increasing the sensitivity of the inner ear to high-frequency sounds.
This amplification process is controlled by the nervous system, allowing for precise encoding of different frequencies. Overall, the inner ear is able to encode high frequencies despite the limitations of neuron transmission rates through the use of specialized structures and mechanisms.
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Maureen sprinkled some seeds on the ground in the woods near her home. A few weeks later, she returned to the place where she sprinkled the seeds. She noticed that some seeds germinated and some did not.
The seeds that had thick layers of branches and leaves overhead did not germinate. The seeds that were below clear areas of the forest did germinate.
Which condition is probably very important for the germination of these types of seeds?
A. oxygen
B. soil type
C. sunlight
D. food
Answers
Answer: sunlight
Explanation:
The condition that is probably very important for the germination of these types of seeds is sunlight.
Since she noticed that some seeds germinated and some did not. She noticed that the seeds that had thick layers of branches and leaves overhead did not germinate. This was because the seed covered didn't receive sunlight.
Without the sun, we should note that plants would not be able to grow, and survive. Apart from water, and carbon dioxide, sunlight is also important for the growth of plant.
Through photosynthesis, the energy gotten by the plants from the sun will be converted to the nutrients needed to make food.
The figure below shows an experiment on photosynthesis. Rebecca observed that the part of the leaf outside the
bottle showed the presence of starch in it. The part of the leaf inside the bottle did not show the presence of starch.
When the same experiment was repeated without potassium hydroxide (KOH) in the bottle, the whole leaf showed the
presence of starch.
KOL
KOH
Water
What can Rebecca correctly infer about potassium hydroxide?
SC 912. L.18.9
It absorbs carbon dioxide
It releases oxygen
It produces water
It dissolves cells
Answers
Answer:A
Explanation:
It absorbs carbon dioxide
Answer: the answer is c: it releases oxygen
Explanation:
i took the test and studied
PLSSSS HELPPP!! What is one way that bacteria is essential to the cycling of nitrogen in an ecosystem, helping to maintain the overall health of the ecosystem? *
They release oxygen for plants to use during photosynthesis.
They fix nitrogen into a usable form for plants and animals.
They produce ammonia and nitrites for respiration.
They assimilate carbon dioxide into the soil for plants.
Answers
Answer:
They assimilate carbon into the soil for plants
Which of the following are true of a species? Select all that apply.
1 of 4 QUESTIONS
All fertile individuals can breed with one another.
Individuals vary genetically.
There is no natural selection occurring.
There is gene flow between populations.
Answers
Answer:
the 1rst and 2nd
Explanation:
all fertile individuals can breed with one another and individuals vary genetically
a scientist is comparing the outer structure of an onion cell, structe x, to the outer
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The generalization that is true regarding the types of structures which is analyzed is that structure X (outer structure of an onion cell) and structure Y (outer structure of a human skin cell) have both examples of cellular membranes.
The Cellular membranes were present in different types of cells and promote as the outer boundaries or secured barriers of the cell. They promote the flow of fluid in and out of the cell and give a structural bar.
These membranes showed as a protector to safeguarding the major tissues and organs from external components such as pathogens, UV radiation, and water loss.
Although, these generalizations have both structure X and structure Y represent cellular membranes are true, which reflects the major role of membranes in prolonging the probity and functionality of cells in various organisms.
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Although part of your question is missing, you might be referring to this full question A scientist is comparing the outer structure of an onion cell, structure X, to the outer structure of a human skin cell, structure Y. Which generalization is true about the types of structures being examined?
Explain how to use the mark-release-recapture technique to estimate the population size of mobile animals (5 marks).
Answers
The mark-release-recapture technique estimates the population size of mobile animals by capturing and marking a sample, releasing them, recapturing another sample, and using the Lincoln-Petersen index formula for estimation.
The mark-release-recapture technique is used to estimate the population size of mobile animals. Here's how it works:
1. Capture: A sample of animals is captured and marked in a harmless and distinctive way, such as tagging or marking them with paint.
2. Release: The marked animals are released back into the population.
3. Time Interval: Allow sufficient time for the marked animals to mix back into the population and become randomly distributed.
4. Recapture: A second sample is taken from the population. This sample includes both marked and unmarked animals.
5. Counting: The number of marked animals (M) and the total number of animals in the second sample (N) are recorded.
6. Calculation: The population size (P) can be estimated using the Lincoln-Petersen index formula:
P = (M x N) / R
where R represents the number of recaptured marked animals.
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Select the body part which possibly shows patchy manner in
Bronchial pneumonia
A. Bronchiole
B. Trachea
C. Alveoli
D. Bronchus
Answers
Option A is correct .The body part which possibly shows patchy manner in Bronchial pneumonia is Alveoli. Bronchial pneumonia, which is also known as lobular pneumonia, is a type of pneumonia that affects both lungs.
It is a severe form of pneumonia in which the bronchioles and alveoli are inflamed. It is a very serious disease that affects people who have a compromised immune system, such as the elderly, young children, or those who have an underlying health condition such as asthma or COPD. Bronchial pneumonia, in contrast to lobar pneumonia, affects various areas of the lung tissue, causing patchy inflammation that affects the alveoli and bronchioles.
Because of the patchy nature of the illness, the lungs may appear mottled on imaging, and symptoms may be less severe than in other forms of pneumonia. Hence, Alveoli is the body part which possibly shows patchy manner in Bronchial pneumonia. Hence correct option is option A.
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The cause of humanity's increased water consumption is an increased population. What is the effect?
Answers
Option are not provided in the question. The complete question is as following:
The cause of humanity's increased water consumption is an increased population. What is the effect?
A. less potable water, a growing threat to biodiversity
B. more potable water, a growing threat to biodiversity
C. less potable water, a decreased threat to biodiversity
D. more potable water, a decreased threat to biodiversity
Answer:
A. less potable water, a growing threat to biodiversity
Explanation:
The increasing population of human causes increase in water consumption that leads to reduction in portable water, which is a growing threat to biodiversity .
Portable water or freshwater is used for drinking by humans beings along with that it provide habitat to many diverse marine wildlife and they are important to local ecosystems as they provide sources of income and food to humans and other wildlife.
Freshwater or portable water play very important role to control flood and erosion.
So, decrease in portable water result into decrease in biodiversity.
Hence, the correct option is A. less potable water, a growing threat to biodiversity .
How many moles of naoh are contained in 65 ml of a 2.20 m solution of naoh in h2o
Answers
To find the number of moles of NaOH in a given volume of a solution, we can use the formula:
n = M * V
where n is the number of moles, M is the molarity of the solution, and V is the volume in liters.
In this case, we have:
M = 2.20 MV = 65 mL = 0.065 LPlugging these values into the formula, we get:
n = 2.20 0.065n = 0.143 molesTherefore, there are 0.143 moles of NaOH in 65 mL of a 2.20 M solution of NaOH in H2O.
About LitersLiter is a unit of measurement of volume. The liter is not one of the SI units, but is listed as one of the "non-SI units accepted for use with SI". The SI unit for volume is the cubic meter. 1 l = 1 dm³ = 1,000 cm³ = 1,000 cc 1 ml = 1 cm³ = 1 cc is a unit of measurement of volume. The liter is not one of the SI units, but is listed as one of the "non-SI units accepted for use with SI". The SI unit for volume is the cubic meter. 1 l = 1 dm³ = 1,000 cm³ = 1,000 cc 1 ml = 1 cm³ = 1 cc
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Learning and memory involve changes in neural circuits within specific regions of the brain. At the cellular level, repeated stimulation of a presynaptic neuron may result in learning if:Select all that apply. the postsynaptic cell produces action potentials with greater maximum voltage.molecular or structural changes occur at the synapse.the stimulated cell produces action potentials with greater maximum voltage.the postsynaptic cell becomes more responsive to subsequent stimulation.the amount of neurotransmitter released from postsynaptic vesicles of the stimulated cell decreases.
Answers
Repeated stimulation of a presynaptic neuron may result in learning if molecular or structural changes occur at the synapse.
How does repeated stimulation of a presynaptic neuron result in learning?Repeated stimulation of a presynaptic neuron can result in learning when there are molecular or structural changes at the synapse. These changes can lead to an increase in the strength of the connection between neurons, also known as synaptic plasticity.
Synaptic plasticity is a key process underlying learning and memory formation in the brain. When a presynaptic neuron is repeatedly stimulated, it can lead to an increase in the release of neurotransmitters or changes in the number or function of receptors on the postsynaptic neuron. These changes can strengthen the connection between the two neurons and make it more likely for them to fire together in the future.
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how does this experimental setup test the influence of selection on leading to the increased frequency of certain phenotypes
Answers
Selection refers to the process whereby certain traits are favored over others in a given population, usually based on their adaptability to the environment. This process can lead to the increased frequency of certain phenotypes, thereby changing the overall genetic composition of the population.
An experimental setup can be designed to test the influence of selection on leading to the increased frequency of certain phenotypes.In this experimental setup, two populations of a particular species are taken, and they are subjected to different environmental conditions. One population is exposed to favorable conditions, while the other is exposed to unfavorable conditions. The populations are then allowed to breed for several generations, and the phenotypic traits of the offspring are recorded.The experimenters can then compare the frequency of certain phenotypic traits between the two populations to see whether or not selection has occurred.
If the frequency of certain traits has increased in the population exposed to favorable conditions, then this would suggest that selection has occurred and that these traits are adaptive in the given environment. If the frequency of certain traits has decreased in the population exposed to unfavorable conditions, then this would suggest that these traits are not adaptive in the given environment. Thus, the experimental setup tests the influence of selection on leading to the increased frequency of certain phenotypes.
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Why only certain cell undergo mitosis
and why other cells undergo meiosis
Answers
Explanation:
Mitosis allows for cells to produce identical copies of themselves, which means the genetic material is duplicated from parent to daughter cells. Mitosis produces two daughter cells from one parent cell. Single-celled eukaryotes, such as amoeba and yeast, use mitosis to reproduce asexuallyand increase their population. Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. ... Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.
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Do you think that the way continents fit together is convincing evidence for the theory of plate tectonics? Why or why not?
Answers
Modern continents hold clues to their distant past. Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together
What is plate tectonic theory?Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements. The theory, which solidified in the 1960s, transformed the earth sciences by explaining many phenomena, including mountain building events, volcanoes, and earthquakesAlfred Wegener in Greenland. Plate tectonics is the theory that Earth's land masses are in constant motion. The realization that Earth's land masses move was first proposed by Alfred Wegener, which he called continental drift. He is shown here in Greenland.. Plate tectonics is a theory because it provides an explanation of why and how segments of the earth move and cause earthquakes and mountains and volcanos.To learn more about plate tectonic theory refers to:
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In a study of self-adhesive bandages, a doctor wanted to see if there was truly a difference in the healing time between the selfadhesive bandages preloaded with antibiotic and the self-adhesive bandages used with an antibiotic applied to the wound. The doctor randomly selected 100 patients to participate in the study and divided them into two groups of 50 -Group 1 using the bandages preloaded with antibiotic and Group 2 using the bandages with the same amount of antibiotic applied to the wound first. In both groups, the amount of time, in days, it took for the wound to heal was recorded. In Group 1, the mean healing time was 1.60 days with a standard deviation of 0.51, and the mean for Group 2 was 3.28 days with a standard deviation of 0.76. (a) Which of the following is the best way to describe this study? Experiment with 2 treatments: the bandages with antibiotic and the bandages with antibiotic applied first Observational study Experiment with 1 treatment: the type of antibiotic used Experiment with 1 treatment: the types of bandages used (b) Calculate the critical value we would use for a 99% confidence interval for difference in the population means? (Use a table or technology. Round your answer to three decimal places.) x (c) Find the 99% confidence interval for the difference in true mean healing time in wounds between the bandages with preloaded antibiotic and the bandages with antibiotic applied to the wound first. (Round your answers to two decimal places.) We can be 99% confident that the difference in true mean healing time in wounds for the bandages with preloaded antibiotic and the bandages with antibiotic applied to the wound first is between A confidence interval is of the form Point Estimate ± Margin of Error., A confidence interval is of the form Point Estimate ± Margin of Error.). (d) Determine whether the following statement is true or false. If zero lies in the interval, then there is sufficient evidence of a significant difference between the mean healing times for the 2 different bandages. True False
Answers
Answer:
Explanation:
(a) The best way to describe this study is: Experiment with 2 treatments: the bandages with antibiotic and the bandages with antibiotic applied first.
(b) To calculate the critical value for a 99% confidence interval for the difference in population means, we need to find the t-value. Since the sample size is relatively large (n = 50), we can use the normal distribution approximation. The critical value for a 99% confidence level corresponds to the z-value at the 0.995 percentile. Using a standard normal distribution table or technology, the critical value is approximately 2.576 (rounded to three decimal places).
(c) To calculate the 99% confidence interval for the difference in true mean healing time between the two types of bandages, we can use the formula:
Confidence Interval = (mean1 - mean2) ± (critical value * standard error)
where:
mean1 = mean healing time for Group 1 (bandages with preloaded antibiotic)
mean2 = mean healing time for Group 2 (bandages with antibiotic applied first)
critical value = 2.576 (from part b)
standard error = sqrt[(variance1/n1) + (variance2/n2)]
Substituting the given values into the formula:
mean1 = 1.60
mean2 = 3.28
standard deviation1 = 0.51
standard deviation2 = 0.76
n1 = n2 = 50
standard error = sqrt[(0.51^2/50) + (0.76^2/50)]
≈ sqrt[0.002601 + 0.009216]
≈ sqrt(0.011817)
≈ 0.1086 (rounded to four decimal places)
Confidence Interval = (1.60 - 3.28) ± (2.576 * 0.1086)
= -1.68 ± 0.2798
= (-1.96, -1.40) (rounded to two decimal places)
Therefore, we can be 99% confident that the difference in true mean healing time in wounds for the bandages with preloaded antibiotic and the bandages with antibiotic applied to the wound first is between -1.96 and -1.40 days.
(d) The statement is true. If the confidence interval includes zero, it means that zero is within the range of plausible values for the difference in mean healing times. This suggests that there is insufficient evidence to conclude that there is a significant difference between the mean healing times for the two different bandages.
which type of protein regulates skeletal muscle contractions?
contractile protein
signal protein
storage protein
structural protein
Answers
Actin, a globular contractile protein, works with myosin to contract muscles.
Which protein controls the contraction of skeletal muscle?Tropomyosins are widespread in animal cells and are contractile proteins that, along with the other proteins actin and myosin, control contraction in both muscle and non-muscle cells. Proteins known as contractile proteins facilitate the sliding of the contractile fibres that make up the cytoskeleton of a cell as well as the contraction of cardiac and skeletal muscle.
What protein makes up skeletal muscle?The contractile proteins actin and myosin are the most significant. Troponin, tropomyosin, M-protein, beta-actin, gamma-actin, and C-protein are significant regulatory proteins. Proteins are also present in the sarcolemma.
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Which of the following is NOT a use of floral preservatives?
O Replenishing the food source
O Lowering the pH
O Reducing bacterial growth
O Preventing ethylene damage
Answers
HELP ME PLEASE I NEED HELP
Answers
Answer:
thes answer is a bacterial cell
Does the light independent reaction produce glucose? help
Answers
Answer: Yes
Explanation: The light-independent reactions (Calvin cycle) use energy from the light-dependent reactions to do carbon fixation and ultimately create a product that can be converted into glucose. Light-independent reactions assemble molecules of glucose.
Male and female reproductive systems that starts with letter D.
Please I need help! no rude/non-sense answer please or I report you.
Answers
Answer:
and the answer is digestive system
if you could genetically engineer any species of organism, what would it
be? Would it be a unicorn? A dog-cat hybrid? Your own personal pet
giant? Choose any species-real or not-that your imagination desires! Someone help please :(
Answers
What is the main chemical released by the adrenal medulla in response to sympathetic stimulation?
a. Epinephrine
b. Norepinephrine
c. Dopamine
d. Cortisol
Answers
The main chemical released by the adrenal medulla in response to sympathetic stimulation is epinephrine, also known as adrenaline, option (a) is correct.
Epinephrine is a hormone and neurotransmitter that plays a crucial role in the body's response to stress or danger. When the sympathetic nervous system is activated during a fight-or-flight response, nerve impulses trigger the release of epinephrine from the adrenal medulla into the bloodstream.
Epinephrine acts on various organs and tissues throughout the body to increase heart rate, elevate blood pressure, dilate airways, and mobilize energy stores. This hormone prepares the body for immediate action by enhancing physical performance, increasing alertness, and promoting rapid response to perceived threats. While norepinephrine is also released by the adrenal medulla, epinephrine is the primary chemical released in response to sympathetic stimulation, option (a) is correct.
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