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const2013 [10]
3 years ago
6

Three billion years ago, Earth's atmosphere was very different. It included the gases methane and ammonia. If scientists found a

new planet outside our solar system that had an atmosphere similar to Earth's three billion years ago, what kingdom's organisms would you expect the new planet's organisms to resemble?
Biology
1 answer:
andrew-mc [135]3 years ago
4 0
Archaebacteria is the answer I'm pretty sure you are looking for. anybody correct me if I'm wrong
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PLEASE HELP ME IT'S DUE TOMORROW!!!!! THANKS IN ADVANCE!!!
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3 years ago
Which enzyme(s) involved in fatty acid synthesis utilize ATP? Select all that apply.
GREYUIT [131]

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

6 0
3 years ago
Please help me, I will give you extra points for this. How about 20?
DochEvi [55]

Answer:

Explanation:

4-a

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7 0
3 years ago
Read 2 more answers
Which of the following is the function of nucleic acids?
slega [8]

Answer:

B. Carry heredity information

Explanation:

Nucleic acids are one of the four types of biological molecules in nature. The other three being: proteins, carbohydrates, lipids. Nucleic acids consists of Deoxyribonucleic acid (DNA) and Ribonucleic acid (RNA).

DNA is a nucleic acid found in the NUCLEUS of eukaryotic cells or nucleoid region of prokaryotic cells where it functions to store or hold genetic information for the cell. On the other hand, RNA functions to carry the stored information in order to be expressed. Hence, according to this question, the nucleic acid functions to carry heredity information.

7 0
3 years ago
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