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gayaneshka [121]
4 years ago
9

Why some molecules can pass through a certain membrane,but other molecules can not

Biology
1 answer:
Alex777 [14]4 years ago
3 0
Some molecule can pass through but others cannot because they are too large to pass through. This is also called selective permeability.
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3 years ago
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Diano4ka-milaya [45]

Answer: Proteins are made using DNA as a template. The DNA is turned into RNA, and the RNA is then turned into DNA. 

A change in these nucleotides could end up making some part of the protein different. A single nucleotide change could be silent (no change in the protein) or could change a single amino acid (amino acids are the building blocks of proteins). If that was an important amino acid, the protein might not function at all! A silent change can occur because the same set of nucleotides sometimes makes the same final amino acid (for example, reading "gcc" "gca" "gcg" or "gct" nucleotides all mean "alanine" amino acid). 

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Vaselesa [24]

Answer:

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