What cell component is an important factor in the

pathogenicity of many disease-causing bacteria?
a. nucleoid
b. pilus
c. polysaccharide capsule
d. flagella
e. cell wall


Answer: c

Biology & Microbiology

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To avoid losing the ability to pull water from the soil as a result of cavitation, plants __________. (Select all correct answer options.)

A. have parallel water conduits B. generate high tensile forces in the xylem C. cannot occupy certain habitats D. close stomata when the tensile forces in the xylem are very large

Biology & Microbiology

The agent of microevolutionary change that is most likely to introduce genetic variation from another population is

referred to as ____.

a. genetic drift b. gene flow c. natural selection d. mutation e. nonrandom mating

Biology & Microbiology

In zygomycetes such as Rhizopus, the zygospore is haploid

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

On occasion, chronic abusers of amphetamines have been misdiagnosed as suffering from:

A) panic disorder B) depression C) autism D) schizophrenia

Biology & Microbiology