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djverab [1.8K]
3 years ago
10

Under what circumstances does membrane transport always require energy?

Biology
1 answer:
kondor19780726 [428]3 years ago
8 0
It requires energy when a substance must travel against a concentration gradient through the membrane
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A mutation within a gene that will insert a premature stop codon in mrna would _______
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A mutation within a gene that will insert a untimely cease codon in mRNA would result in a shortened polypeptide chain.

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In genetics, a nonsense mutation is a factor mutation in a sequence of DNA that effects in a premature stop codon, or a nonsense codon in the transcribed mRNA, and in a truncated, incomplete, and normally nonfunctional protein product.

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