Protein channels allow
molecules in and out of
the cell without using
energy. Therefore...
Biology, 29.07.2021 20:40 nails4life324
Protein channels allow
molecules in and out of
the cell without using
energy. Therefore, they
are an example of which
type of transport?
Answers: 3
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Describe the function of the endomembrane system? what organelles are involved?
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The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.
Answers: 1
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Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled
Answers: 1
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