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
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Human traits are controlled only by the genetic material found in the 46 chromosomes
a. True b. False
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
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
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.