hydrophobic b. unable to freely pass through the cell membrane c. a polar molecu

Question

hydrophobic b. unable to freely pass through the cell membrane c. a polar molecule Which of the following molecules can pass freely through a. carbohydrates 15. b) lipids c. amino 16. Each amino acid differs from others in the: a. chemical structure of the R group. b. size of the amino group. c. number of carboxyl groups d. number of peptide bonds in the molecule. The pH in an organism a) 17. is a measure of the amount of H+ can affect the structure of proteins c. can affect the function of proteins d. all of the above are true

Explanation / Answer

16. Each amino acid differs from others in the

Answer:-

A. Chemical structure of R group.

The structure of an amino acid is as follow

A carbon atom has attached

1 amino group (NH2)

1 carboxyl group (COOH)

1 hydrogen atom (H)

1 R group

This R group can be anything and this R group decides which amino acid it is. Reat of 3 things remain same in all the amino acids.

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