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
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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.
Explain the genetic basis of height in humans
What will be an ideal response?
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
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.