Which of the following is NOT a countermeasure of bacteria trying to escape host immune responses?

A) Catalase production
B) Siderophore production
C) Antioxidant production
D) Leukocidin production
E) Capsule production


Ans: B) Siderophore production

Biology & Microbiology

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Approximately how many nerve cells does a human have?

A. 10 million B. 100 million C. 10 billion D. 100 billion E. We do not have a good estimate.

Biology & Microbiology

Explain the genetic basis of height in humans

What will be an ideal response?

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In a life cycle that exhibits ____, the only diploid cell is the zygote

a. alternation of generations b. haploid-dominance c. heterotrophism d. endosymbiosis e. diploid-dominance

Biology & Microbiology

When air is no longer moving through the respiratory tract and the airway is open to the environment, the pressure within the lung is equal to

A) end-diastolic pressure. B) transpulmonary pressure. C) atmospheric pressure. D) intrapleural pressure. E) systolic blood pressure.

Biology & Microbiology