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CH. 3 BIO 111 Quick Test Questions And Accurate Answers
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CH. 3 BIO 111 Quick Test Questions AndAccurate Answers
Changing one amino acid in a protein of 433 amino acids would - Answer always change
the primary structure of the protein and sometimes its tertiary structure or function
If cells are grown in a medium containing radioactive 32P, which of these molecules will
be radioactively labeled? - Answer nucleic acids
How many peptide bonds does a polypeptide with 45 amino acids contain? - Answer 44
If a DNA sample were composed of 15% adenine what would be the percentage of
guanine? - Answer 35
If a DNA sample were composed of 15% adenine what would be the percentage of
thymine? - Answer 15
Which of the following large biological molecules will selfassemble into a bi layer when
mixed with water? - Answer phospholipids
Lactase is a single polypeptide enzyme that hydrolyzes the disaccharide lactose into
monosaccharides. Optimum pH for the activity of this enzyme is 6. On transferring this
enzyme to pH 5, there is a considerable decrease in the enzyme activity probably due to
disruption in - Answer the secondary and tertiary structure of the enzyme.
Quarternary - Answer structure is the result of two or more protein subunits assembling
into a larger, biologically active protein complex.
Secondary - Answer structure describes the alpha-helices and beta-sheets that are
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