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Marianna [84]
3 years ago
12

Why do mountaineers become breathless as they reach high altitudes?

Biology
1 answer:
garik1379 [7]3 years ago
3 0

Answer:

C.  Oxygen concentration decreases as altitude increases

Explanation:

Higher altitudes have lower levels of oxygen and decreased air pressure.

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there must be large numbers of free amino acids present in the cytoplasm

Explanation:

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During translation, as the codons in the mRNA match their complements in the tRNA, the amino acid being carried by the tRNA is released and a peptide bond is formed between subsequent amino acids until the required polypeptide bond is formed.

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Answer:

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