The prokaryotic chromosome is

A. composed of single-stranded DNA.
B. localized to a nucleoid region.
C. circular and loosely packed.
D. linear and tightly wrapped around histone proteins.
E. held within a membrane-bound nucleus.


Answer: B

Biology & Microbiology

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________ are proteins that promote depolymerization of extant microtubules at the ends.

Fill in the blank(s) with the appropriate word(s).

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All of the following are industrial products produced using microbial fermentations EXCEPT

A) aspartic acid. B) citric acid. C) glutamic acid. D) riboflavin. E) saccharin.

Biology & Microbiology

Animal cells have "counters" that keep track of how many times a cell has divided. These counters are called:

A) centromeres. B) odometers. C) telomeres. D) nuclei. E)chromosomes.

Biology & Microbiology

The imaging technique that identifies differences in blood flow to particular regions through detection of differences in the relative proportions of oxygenated and deoxygenated hemoglobin is the

A. X-ray. B. MRI scan. C. sonogram. D. fMRI scan. E. CT scan.

Biology & Microbiology