The chromosomes of most bacteria are comprised of ________.

A. double-stranded linear molecules
B. single-stranded circular molecules
C. double-stranded circular molecules
D. single-stranded linear molecules


Answer: C

Biology & Microbiology

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Human traits are controlled only by the genetic material found in the 46 chromosomes

a. True b. False

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What causes a stomach ulcer?

A) Lack of a key nutrient B) Consuming too many calories C) Chronic consumption of spicy food D) A bacterial infection

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Barnacles live on the bodies of whales and other aquatic organisms. They do not hurt their host but gain the benefit of a habitat and food supply from the host. This relationship is called

a) commensalism b) parasitism c) mutualism d) predation

Biology & Microbiology

Which of the following statements about constitutive genes is false?

A) Constitutive genes account for less than 20 percent of a cell's genes. B) Constitutive genes function differently than facultative genes. C) Constitutive genes are expressed at any given time. D) Constitutive genes produce their proteins when a cell encounters a specific environmental change. E) Constitutive genes are referred to as housekeeping genes.

Biology & Microbiology