All of the following are the result of B cell maturation and activation EXCEPT

A. antibody is produced.
B. macrophages are activated.
C. plasma cells are produced.
D. memory cells are produced.


Answer: B

Biology & Microbiology

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Which of the following represents the most correct order of the organization of life from the smallest unit to the largest?

a. atoms ? molecules ? cells ? organisms ? populations ? communities ? ecosystems ? biosphere b. atoms ? molecules ? cells ? organisms ? communities ? populations? ecosystems ? biosphere c. atoms ? molecules ? cells ? organisms ? populations ? ecosystems ? communities ? biosphere d. communities ? biosphere ? organisms ? ecosystems ? populations ? cells ? molecules ? atoms e. biosphere ? organisms ? communities ? ecosystems ? populations ? molecules ? cells ? atoms

Biology & Microbiology

Hemorrhagic and nonhemorrhagic fever diseases have a common feature of a high fever.  These categories of diseases are distinguished by

A. the pattern of the fever, whether it is constant or varies with time. B. the viral load in the blood, specifically the viral titer. C. viral causes in hemorrhagic fevers and bacterial or protozoan causes in nonhemorrhagic fevers. D. the overall mortality rate, as hemorrhagic fevers have a much higher mortality rate. E. the integrity of the capillary endothelium and its ability to contain the blood.

Biology & Microbiology

What body cavity does the heart reside within?

a. cranial b. spinal c. thoracic d. abdominal e. pelvic

Biology & Microbiology

Four of the five answers listed below are relationships in which at least one of the interacting organisms benefits. Select the exception

a. competition b. parasitism c. mutualism d. commensalism e. predation

Biology & Microbiology