A protein containing more than one polypeptide chain exhibits the ________ level of protein structure

A) primary
B) secondary
C) tertiary
D) quaternary


Answer: D

Biology & Microbiology

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Mutation can be defined as the addition of genetic variation that increases the hereditary diversity of a population.

a. true b. false

Biology & Microbiology

Process by which substances are moved into the cell from the environment; includes phagocytosis, pinocytosis, and receptor-mediated endocytosis.

What will be an ideal response?

Biology & Microbiology

The process of assembling a new or improved biochemical pathway to make products or to degrade toxic compounds is

a. protein fusion. b. operon fusion. c. pathway engineering. d. gene mining.

Biology & Microbiology

In some cases the DNA lesion is bypassed by the DNA polymerase, leaving a gap that is single-stranded and contains the lesion. Since the gap is single-stranded the lesion cannot be repaired

Which of the following is not a feature of the repair of such gaps? A. The 3' single-strand overhang invades the intact portion of the chromosome, pairs with its complementary strand, and displaces the other. B. Strand invasion occurs by the intact, lesion-containing strand. C. Branch migration generates two Holliday junctions. D. The displaced, undamaged strand is replicated. E. Holliday intermediates are cleaved by resolvases.

Biology & Microbiology