All bacteria and viruses are

A) antibodies.
B) plasma cells.
C) pathogens.
D) causes of cancer.
E) microbes.


E

Biology & Microbiology

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The stimulus for secretion of neurotransmitters into the synaptic cleft is an increase in

A) potassium levels. B) chloride levels. C) sodium levels. D) calcium levels. E) neurotransmitter levels.

Biology & Microbiology

Using the product rule, the probability that parents heterozygous for two traits (AaBb) produce an offspring homozygous recessive for the same two traits (aabb) is

A) 1/4. B) 1/8. C) 1/16. D) 1/24.

Biology & Microbiology

Protecting the endangered whooping crane from extinction involved

A) captive breeding and reintroduction. B) collecting individuals from multiple small populations and combining them into a single large population. C) vaccinating the remaining population against plague. D) providing food during harsh winters.

Biology & Microbiology

Mad cow disease is caused by a

A. virus. B. bacterium. C. prion. D. viroid. E. virion.

Biology & Microbiology