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3 years ago

Which enzyme(s) involved in fatty acid synthesis utilize ATP? Select all that apply.

Biology

1 answer:

seropon [69]3 years ago

5 0

Answer:

a. Acetyl CoA carboxylase

Explanation:

Much of the fatty acids used by the body is supplied by the diet, excessive amounts of carbohydrates and protein obtained from the diet can be converted to fatty acids and stored as triglycerides. Fatty acid synthesis occurs mainly in the liver and mammary glands, and to a lesser extent in adipose tissue and kidney, the process incorporates acetyl CoA carbons into the forming fatty acid chain using ATP and NADPH.

The acetyl portion of acetyl CoA is transported to cytosol as citrate, produced by condensation of oxaloacetate and acetyl CoA, the first reaction of the citric acid cycle, this occurs when the concentration of mitochondrial citrate is high, observed when there is a high concentration of ATP and isocitrate dehydrogenase is inhibited. The increase of citrate and ATP favors the synthesis of fatty acids, since this pathway needs both. Acetyl CoA should be converted to malonyl CoA. Carboxylation is catalyzed by acetyl CoA carboxylase and requires ATP, this reaction is the regulated step in fatty acid synthesis: it is inactivated by products, malonyl CoA and palmitoyl CoA, and activated by citrate, another regulatory mechanism is reversible phosphorylation of enzyme, which makes it inactive due to the presence of adrenaline / glucagon

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What is formed by organized groups of cells with similar structures and a common purpose?

Tanzania [10]

Answer:

Cells with similar structures and a common purpose that are organized form a tissue (option D).

Explanation:

Biological tissues are structures originated by the grouping of differentiated cells, which are organized and distributed in such a way that they can fulfill a function in a coordinated way. A characteristic of tissues is that all the cells that constitute them have the same embryonic origin.

An example of a tissue is nervous tissue, formed by neurons, specialized cells that when united form it and fulfill the same function.

The functions of cells are mainly multiplication, development and differentiation, in addition to their ability to group together to form tissues.

The other options are not correct because:

A. Organs are formed from differentiated tissue.

B and C. Digestion and circulation are functions that depend on the organs of the digestive and circulatory systems, respectively.

6 0

3 years ago

A person with the genetic disorder Klinefelter's syndrome has an extra x-chromosome (genotype XXY). What can you predict is the

pashok25 [27]

Answer:

The correct answer is non-disjunction at the time of meiosis.

Explanation:

A disorder, which takes place in males exhibiting an additional X-chromosome and is an outcome of an error in cell differentiation resulting in anomaly known as the Klinefelter's syndrome. Due to non-disjunction the egg or the sperm may acquire an additional X-chromosome. When these unusual cells take part in the genetic makeup of a person, then that individual most probably suffers from the condition termed as Klinefelter's syndrome.

In the majority of the circumstances, the division of the cells takes place generally during the development of the sperm, and at the same time, there may be certain errors at the time of egg development. Generally, the condition is mostly seen in the offspring of women that conceive after the age of 35.

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3 years ago

Which gas is increasing and what effect does it have on the earth?

kondor19780726 [428]

Answer:

the level of carbon dioxide in Earth's atmosphere has been rising consistently for decades and traps extra heat near the surface of the Earth causing temperatures to rise

4 0

3 years ago

Under which of the following circumstances would a DNA microarray be useful? Multiple Choice It would enable a researcher to det

diamong [38]

Answer:

The correct answer is ''All of these are circumstances in which a DNA microarray would be useful.''

Explanation:

A DNA microarray is used to determine the complete genetic expression of a tissue at a given time. DNA microarrays is one of the most important applications for the information obtained from the systematic sequencing of complete genomes. They consist of a membrane, which can be made of nylon, silicone or a simple glass slide. The DNA of many genes, arranged according to a specific pattern, is immobilized on this membrane. These DNA fragments, which are known as probes or oligos, are arranged in microscopic spots. Microarray technologies are used in research at the molecular level, they allow the study of simple changes in the DNA sequence and mutations in complex genes that are associated with a specific disease, helping to diagnose diseases.

4 0

3 years ago

Which of the following statements about genetically modified organisms (GMOS) are correct? Select all that apply. options: Trans

Elenna [48]

Answer:

All the mentioned statements are correct.

Explanation:

GMOs or genetically modified organisms refer to those whose genetic substance, that is, DNA has been manipulated artificially to generate new kind of DNA, which can be utilized for the benefit of humans. The GMOs comprise genetically modified animals, genetically modified crops, and genetically modified bacteria.

The transgenic bacteria are used to generate protein for human use. The bacteria get changed by administration of the desired protein generating genes and the protein is harvested.

The anticoagulant proteins called antithrombin are generated from the milk of the transgenic goats.

The transgenic mice work as a great laboratory resource to examine the influences of gene mutations. Primarily the mutation in human genes is examined.

Transgenic bacteria are being utilized to generate human growth hormones as well. The genes accountable for the generation of growth hormones are introduced in the bacteria and the growth hormone is translated. Thus, all the given statements are correct.

5 0

3 years ago