Tasha is facing in class an academic challenge that she cannot solve. As a result, it would be best for her to
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PLEASE HELP ITS TIMED PLEASE!! 90 POINTS!!
1. Bacteria may become resistant to a specific antibiotic because
A. bacteria cannot be killed; they are merely weakened by antibiotics
B. some bacteria become resistant after being exposed to the antibiotic the first time
C. some bacteria have a gene which makes them resistant to that drug
D. all the bacteria will be killed by the antibiotic
2. A farmer has an invasion of an insect pest which is threatening to destroy his corn crop. He buys an insecticide at an agricultural store and sprays the entire field. Two weeks later, he notices that the insect population has increased rapidly again. Which of the following is his best option for saving his crop?
A. Use an insecticide made of a different chemical
B. Use the same insecticide that he used the first time
C. Buy some seed-eating birds and release them into his field
D. Set fire to his field which will kill the insects but not the corn.
3. If several of the Galapagos Islands have finches with the same beak type, what is the best explanation for this phenomenon?
A. Those islands have a similar food type
B. The ancestral species had the same beak type
C. That beak type is suited to eating large hard seeds
D. Those islands had mountains as well as flatlands
4. Descent with modification can best explain which of the following:
A. The evolution of tortoises from turtles
B. Adaptive radiation in Darwin's finches
C. Dogs and cats have a tail
D. Whales, fish, and penguins have the same basic body type
19. Evolution by natural selection occurs because:
A. a particular trait appears because it is needed for survival of the species
B. some members have a beneficial trait which helps them better survive and reproduce in its environment
C. the environment of a particular species remains unchanged for millions of years
D. the limb will disappear if it is not used
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C. some bacteria have a gene which makes them resistant to that drug
A. Use an insecticide made of a different chemical
A. Those islands have a similar food type
B. Adaptive radiation in Darwin's finches
B. some members have a beneficial trait which helps them better survive and reproduce in its environment
What are Bacteria?Generally, Bacteria are common, mostly free-living creatures that often only have one biological cell. They make up a significant portion of the prokaryotic microbial kingdom. Bacteria, which are typically a few micrometers long and were among the earliest living forms to arise on Earth, are found in the majority of its habitats.
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An idea or belief that is developed by a group of people and is not inherently
true or scientifically proven is considered to be constructed
A. scientifically
B. biologically
C. racially
D. socially
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Answer:
socially
An idea or belief that is developed by a group of people and is not inherently
true or scientifically proven is considered to be constructed socially.
An idea or belief that is developed by a group of people and is not inherently true or scientifically proven is considered to be constructed Socially i.e. Social racism.
what is social racism?Social racism is the formalization of a set of institutional, historical, cultural and interpersonal behaviors within a society. Social Racism disadvantages one or more social or ethnic groups and places them in a better position to succeed, resulting in long-term inequities between the groups. Scientists generally believe that race is a social construct without biological significance. For example, DuBois would be favored by science. Scientists nowadays believe that race is a sociological construct with no biological significance. Even yet, you might discover categories like white and black being utilized as biological variables in a genetics study published in a major scientific publication.
Hence , the correct option is D.
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Of the 6 carbons in a starting molecule of glucose, at the completion of pyruvate oxidation, _____ carbons are fully oxidized to _____, while _____ carbons remain in _____.
a. Three; pyruvate; three; acetyl groups
b. Two; CO2; four; acetyl groups
c. Four; CO2; two; CoA
d. Two; acetyl groups; four; CO2
e. Four; acetyl groups; two; CO2
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Of the 6 carbons in a starting molecule of glucose, at the completion of pyruvate oxidation, four carbons are fully oxidized to CO2, while two carbons remain in acetyl groups.
Option C: Four; CO2; two; CoA is the correct answer. Pyruvate oxidation is the second stage of cellular respiration, a process that breaks down glucose in the presence of oxygen to produce ATP.The process of pyruvate oxidation involves the breakdown of pyruvate (a 3-carbon molecule) into a 2-carbon molecule (acetyl-CoA) that can enter the next stage of cellular respiration, the citric acid cycle. Here, the acetyl-CoA is combined with a molecule of oxaloacetate (a 4-carbon molecule) to form a 6-carbon molecule called citrate.
More than 100 species of bacteria and archaea use pyruvate oxidation as part of their metabolic process.
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what is the fundamental idea behind parsimony? group of answer choices the best phylogeny is the one that both explains the observed character data and posits the fewest evolutionary changes for a group of taxa. the best phylogeny is the one that posits the greatest number of evolutionary changes for a group of taxa. the computed number of morphological or molecular distances between taxa indicates their relatedness. morphological traits cannot be used to reconstruct phylogenetic history.
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The fundamental idea behind parsimony is option A: the phylogeny that explains the observed character data and assumes the fewest evolutionary changes for a set of taxa is considered to be the best.
A key feature of phylogenetic inference is parsimony, which states that the branching pattern that requires the fewest number of evolutionary changes should be assumed to represent the phylogeny of a group of species. In other terms, it is a technique for building phylogenetic trees that aims to reduce the overall number of evolutionary changes necessary to account for a certain set of data.
Parsimony belongs to a group of character-based tree estimation techniques that infer one or more ideal phylogenetic trees for a group of taxa, typically a group of species or reproductively isolated populations of a single species, using a matrix of discrete phylogenetic characteristics and character states.
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Correct question:
What is the fundamental idea behind parsimony? group of answer choices
the best phylogeny is the one that both explains the observed character data and posits the fewest evolutionary changes for a group of taxa.
the best phylogeny is the one that posits the greatest number of evolutionary changes for a group of taxa.
the computed number of morphological or molecular distances between taxa indicates their relatedness.
morphological traits cannot be used to reconstruct phylogenetic history.
Identify a country where the age profile of the population and the incidence of HIV/AIDS are most likely to make it difficult for that society to care adequately for the young people.
Cote D’Ivoire
Tanzania
Angola
Uganda
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Uganda is a country where the age profile of the population and the incidence of HIV/AIDS make it challenging for society to adequately care for young people. The combination of a high youth population and a significant HIV/AIDS burden places a strain on Uganda's resources and social systems.
Uganda has a relatively young population, with a significant proportion of the population being under the age of 18. This puts pressure on providing adequate education, healthcare, and social support systems to meet the needs of the young population.
Furthermore, Uganda has been severely affected by the HIV/AIDS epidemic. The country has experienced high prevalence rates, and the impact of the disease has resulted in increased mortality rates and a significant number of orphaned children. The loss of parents due to AIDS-related illnesses leaves many young people without proper family support and exposes them to various vulnerabilities.
The combination of a large youth population and the burden of HIV/AIDS makes it challenging for Uganda to adequately care for its young people. It requires comprehensive efforts in healthcare, education, social services, and support networks to address the unique needs and challenges faced by young individuals affected by the HIV/AIDS epidemic.
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yibble yabble give me answer plz
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Answer:
Nucleotide is the monomer for a nucleic acid.Explanation:
Nucleic acids are long chain polymers of nucleotides, so they are also called polynucleotides.
What is the Monomer for a Nucleic Acid?
Answer:-Nucleotide is the Monomer for a Nucleic Acid.
Nucleotides are the basic component of nucleic acids. Nucleotides are composed of phosphate groups and sugar molecules (either RNA ribose or DNA deoxyribose) bound to nitrogen-containing substances."Crossing Over" occurs in Prophase 1 of Meiosis.
True
False
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Answer:
true
Explanation:
Answer:
Crossing over occurs during prophase I of meiosis before tetrads are aligned along the equator in metaphase I. By meiosis II, only sister chromatids remain and homologous chromosomes have been moved to separate cells. Recall that the point of crossing over is to increase genetic diversity.
Explanation:
what virus only affects bacteria
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Answer: Bacteriophages (phages)
Explanation:
Explain how radioactive decay works?
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A radioactive decay causes an unstable atomic nucleus to loose its energy by undergoing a transformation into one or more different atomic nuclei.
What is a radioactive decay?
A radioactive decay can be defined as a radioactive process in which an unstable atomic nucleus undergoes a spontaneous transformation into one or more different atomic nuclei and simultaneously emits radiation, accompanied with a loss of energy.
In Science, there are three main types of radioactive decay and these include the following:
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How do scientists know the CO2 levels going back over 400,000 years?
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Answer: Various proxy measurements have been used to attempt to determine atmospheric carbon dioxide concentrations millions of years in the past. These include boron and carbon isotope ratios in certain types of marine sediments, and the number of stomata observed on fossil plant leaves. 2 record of over 500 million years.
Explanation:
the enzyme acetylcholinesterase, located in the synaptic cleft and on the postsynaptic membrane, breaks ach down into acetate and choline, thereby stopping the stimulation of a postsynaptic cell. t or f
Answers
True
What is enzyme ?
Proteins called enzymes serve as biological catalysts by quickening chemical processes. Substrates are the compounds that enzymes may interact with.
True, the enzyme acetylcholinesterase, located in the synaptic cleft and on the postsynaptic membrane, breaks ach down into acetate and choline, thereby stopping the stimulation of a postsynaptic cell
Acetylcholine is necessary for the body's signalling of cells and the passage of information.
The transmission between nerve cells is blocked when acetylcholine is degraded.
Inhibitors are present, which maintains the usual amount of acetylcholine in the body, preventing its breakdown and maintaining nerve cell transmission.
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The flowchart below shows the three generations of a cross between a pea plant that has yellow pods and a pea plant that has green pods. Yellow pods are the dominant trait. The flowchart is missing the labels that describe the traits. A flow chart is shown. A and B both go to C. C goes to both D and E. In which squares should the phrase “Yellow pods” appear? A and D B and E A, C, and D A, B, C, D, and E
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Answer:
3
Explanation:
A and D only
B and E only
A, C, and D only
A, B, C, D, and E
Mark this and return
The typical order for the major steps of enzyme isolation would be?
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The typical order for the major steps of enzyme isolation would be
Homogenization, salt fractionation, column chromatography, Electrophoresis.Proteins called enzymes operate as natural catalysts for cellular non-spontaneous chemical events, starting and accelerating them. Despite their high turnover rates, they are picky and precise in their behavior.
Cell extract preparation, often known as cell lysis, is a stage of the capture phase. It entails liberating the cellular material from the host cells or tissue into an extraction buffer, producing the crude extract while preserving and stabilizing the target protein.The phenomenon known as "salting-out" occurs at very high ionic strengths, where protein solubility declines as ionic strength rises.As a result, salting out can be used to separate proteins according to how soluble they are in salt solutions.One of the most popular techniques for purifying enzymes is column chromatography. The foundation of chromatography is the idea that mixtures of molecules applied to surfaces or solids, and fluid stationary phases (stable phases), separate from one another while moving with the help of a mobile phase.Specific proteins in the blood can be measured using a test called protein electrophoresis. Based on their electrical charge, the test divides blood proteins into several groups.learn more about enzyme isolation here: https://brainly.com/question/22318217
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It is commonly believed that the mean body temperature of a healthy adult is 98.6∘F. You are not entirely convinced. You believe that it is not 98.6∘F. You collected data using 54 healthy people and found that they had a mean body temperature of 98.26∘F with a standard deviation of 1.16∘F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6∘F. a) Identify the null and alternative hypotheses? H0: ?
H1: ? b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? i. left-tailed ii. right-tailed
iii. two-tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places. f) Do you reject the null hypothesis? 1. We reject the null hypothesis, since the p-value is less than the significance level.
2. We reject the null hypothesis, since the p-value is not less than the significance level. 3. We fail to reject the null hypothesis, since the p-value is less than the significance level. 4. We fail to reject the null hypothesis, since the p-value is not less than the significance level. g) Select the statement below that best represents the conclusion that can be made. 1. There is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F. 2. There is not sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F. 3. The sample data support the claim that the mean body temperature of a healthy adult is not 98.6∘F.
4. There is not sufficient sample evidence to support the claim that the mean body temperature of a healthy adult is not 98.6∘F.
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The conclusion of the hypothesis test regarding the mean body temperature of a healthy adult is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6∘F.
What is the conclusion of the hypothesis test regarding the mean body temperature of a healthy adult?a) Null Hypothesis (H0): The mean body temperature of a healthy adult is 98.6∘F.
Alternative Hypothesis (H1): The mean body temperature of a healthy adult is not 98.6∘F.
b) The hypothesis test should be two-tailed.
c) The appropriate significance level is 0.05.
d) The test statistic is calculated using the formula: (sample mean - hypothesized mean) / (sample standard deviation / sqrt(sample size)). The result is -5.86.
e) The p-value is calculated by finding the probability of obtaining a test statistic as extreme or more extreme than the observed value under the null hypothesis. The p-value is 0.0000.
f) We reject the null hypothesis, since the p-value is less than the significance level.
g) The phrase "There is sufficient evidence to warrant rejection of the claim that the mean body temperature of a healthy adult is not 98.6F" best summarises the finding.
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how does one determine the minimum inhibitory concentration in the broth test? select one: a. reading the concentration on the plastic strip b. testing the fic index c. looking at the growth inhibition zone d. examining the broth for lack of turbidity
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One can determine the minimum inhibitory concentration in the broth test by examining the broth for lack of turbidity.
The correct option is option d.
The minimum inhibitory concentration happens to define the in vitro levels of susceptibility or the resistance of some particular bacterial strains to the applied antibiotic. Reliable assessment of the minimum inhibitory concentration has a very significant impact on the therapeutic strategy which will be chosen and also affects efficiency of an infection therapy.
The minimum inhibitory concentration or the MIC is basically the lowest concentration of a chemical, which is usually a drug which happens to prevent the visible growth of the bacterium. The determination of the minimum inhibitory concentration is basically based on turbidity. High turbidity would mean high concentrations of anti microbial drugs whereas lower the turbidity, the lower will be the microbial concentration.
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How does virus and bacterial infections each affect healthy body cells?
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The virus infections happens when a virus gets past the physical barriers of the body (skin, mucus, and so on) and infect a suitable cell, the virus take the genetic machinery of the host cell to replicate, damaging that cell and making more virus that will do the same process with other suitable cells. After the virus use all the cell potential, it will kill the cell and release all the virus that were in the cytoplasm of the host. While bacterial infections have more autonomy, being not necessary the integral machinery of the cell to multiply in the host body, it can act in differrebt ways, such as: crowd out the host tissue and disrupt the function, killing the cells or tissues outright, destroy the metabolic machinery, cause a massive toxic reaction in the immune system, and release toxins that can make the body stop all their functions at once (paralyze the metabolic and general system of the host).
Given the location of succinate in cells shivering probably induces a. Generation heat through increased UCP transcription but not activation b. A failure to generate heat c. Generation heat through increased UCP transcription and activation d. Generation heat through increased UCP activation but not transcription
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Given the location of succinate in cells shivering probably induces generation heat through increased UCP transcription and activation. The correct answer is option C.
Shivering is the involuntary contraction of skeletal muscles to generate heat in response to cold. This process is regulated by the hypothalamus, which activates the sympathetic nervous system to release norepinephrine. Norepinephrine then stimulates the brown adipose tissue (BAT) to increase the transcription and activation of uncoupling protein 1 (UCP1).
UCP1 is located in the inner mitochondrial membrane and uncouples oxidative phosphorylation from ATP synthesis. This means that the energy from the electron transport chain is released as heat instead of being used to produce ATP. As a result, shivering induces the generation of heat through increased UCP transcription and activation.
Therefore, the correct answer is option C. Generation heat through increased UCP transcription and activation.
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What are 3 advantages of asexual reproduction?
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The rapid preservation and propagation of desirable traits without genetic variation, leading to efficient and stable populations.
What is Asexual reproduction?Asexual reproduction is a type of sexual reproduction that doesn't use gametes or fertilisation.
What are the three benefits of asexual reproduction?Asexual reproduction can happen considerably more quickly than sexual reproduction because it doesn't involve the time and effort required for mating and creating children.
Asexual reproduction is simple since it doesn't need a partner and can happen naturally without the aid of any specialised systems or procedures.
Desirable qualities can be promptly and effectively maintained without the genetic variation that results from sexual reproduction since kids produced by asexual reproduction are identical to the parent.
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At which level of the energy pyramid would most of the biomass be found?
Answers
Answer:
producer level
Explanation:
Which of the following statements about daughter cells are true? Check all that apply.
Daughter cells do not undergo cell division.
Daughter cells are the same type of cell as the parent cell.
Daughter cells can be a different type of cell than the parent cell.
Proper cell division balances the death of older cells with the creation of new cells.
Answers
Answer: the second and last one
Explanation:
Answer: B and D
Daughter cells are the same type of cell as the parent cell.
Proper cell division balances the death of older cells with the creation of new cells.
Please help I’m crying in frustration rn someone please write a sentence I could use
Answers
answer:
aw don't cry im so so sorry
explanation:
i got you okay
an organism that has 2 alleles that are different genes are called heterozygous & phenotypes associated with a certain allele sometimes are recessive or dominant, often there are not though.
hope this helped <3 also if wouldn't mind could you pls give me brainliest? (im trying to level up) thanks! :)
Check the image for question
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Hope this helps
Cause-effect relationship
1.Water cycle and Air temperature
2.Habitad and Biodiversity
3.Water temperature and Ocean circulation
4.Greenhouse and Agricultural activities
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Answer:
I m not sure how to make this work for you husband and my husband and my wife and
The mineral called ___, stored within bone, is a component of ATP and phospholipids.
a. phosphate
b. calcitonin
c. parathyroid
Answers
The mineral called phosphate, stored within bone, is a component of ATP and phospholipids, option (a) is correct.
Phosphate is an essential mineral that is stored in bones in the form of calcium phosphate. It is crucial for various bodily functions, including the formation of ATP, the energy currency of cells, and phospholipids, which are a major component of cell membranes.
The levels of phosphate in the body are tightly regulated by hormones such as calcitonin and parathyroid hormone, which act on the bones, kidneys, and intestines to maintain a balance. Inadequate intake of phosphate can lead to a deficiency, which can cause muscle weakness, bone loss, and other health problems, option (a) is correct.
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Describe.akljsdljakdkafhafalkfhal
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.akljsdljakdkafhafalkfhal means .akljsdljakdkafhafalkfhal
HOPE THAT HELPS !!! THANKS FOR THE FIVE POINTS!!
which observation should the scientists see as most promising for developing a testable hypothesis that helps determine the connection between organic farming and biodiversity?
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The observation that stands out as the most promising for developing a testable hypothesis is the observation that organic farming operations support a greater variety of species than conventional farming operations.
What is hypothesis?Hypothesis is an educated guess or prediction about the outcome of a scientific experiment or study. It is a statement that can be tested and verified through scientific research. A hypothesis is a tool used by scientists to organize and focus their research. It gives direction and structure to the research process, allowing the scientist to narrow their focus and avoid collecting unnecessary data.
This observation can be used to develop a hypothesis that organic farming supports higher biodiversity than conventional farming, and then this hypothesis can be tested by comparing biodiversity levels in organic and conventional farming operations.
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Which part of your bone has the important function of storing minerals?
Answers
Answer:
Spongy bone
Its the soft, inner layer of your bones. It's full of holes where bone marrow can fit.
Although A Long Way Gone by Ishmael Beah is a __________, it uses many elements of __________.
biography . . . fiction
memoir . . . fiction
tall tale . . . nonfiction
poem . . . nonfiction
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Although A Long Way Gone by Ishmael Beah is a memoir, it uses many elements of fiction.
What is a memoir?Memoir is a type of literary genre that constitutes a personal narrative and its most significant feature is the insertion of the writer himself as the main character.
Writing an memoir implies a literary pact and not a historical or documentary one, because sometimes the narrative presents a memorialistic rescue (based on reality) and sometimes it builds the plot with the threads of fiction.
So, in this case, A Long Way Gone by Ishmael Beah is a memoir, it uses many elements of fiction.
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How do seeds make angiosperms and gymnosperms more fit to reproduce on land than ferns and mosses?
Answers
Ferns and mosses are both seedless plants, while conifers are gymnosperms, which produce seeds.
What makes gymnosperm different from moss and ferns?The seeds make angiosperms and gymnosperms suitable to reproduce on land by Ferns making their seeds either bear interior plants or on the scales of cones. They make it so the seeds have to copy on land because the seed's pollen has to go to sure gymnosperms' places such as in a flower or on cones.
Gymnosperms require wind to breed but ferns need water for the sperm to swim through. Gymnosperms have wood lignin and cork cambium and are more constitutional rigid and thick because of layers of dead lesser vascular tissue. Ferns do not have wood or bark.
So we can conclude that Gymnosperms on the other hand have seeds, while they are not put inside an ovary.
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What organelles are found inside cardiac muscle (cells)?
Answers
Answer:
Cardiac muscle cells also contain mitochondria, which many people call “the powerhouses of the cells.” These are organelles that convert oxygen and glucose into energy in the form of adenosine triphosphate (ATP).