Which of the following pathways for complement activation is generally dependent upon the formation of antigen-antibody complexes?

A. Classical pathway
B. Lectin complement pathway
C. Alternative pathway
D. All of the choices are correct.


Answer: A

Biology & Microbiology

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BRCA1 and BRCA2 are considered to be tumor-suppressor genes because _____

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Tom recently started going to the gym, where he has taken up weight lifting. Increases in his

muscle mass are due to __________.

a. cell enlargement b. cell division c. an increase in the number of cells d. all of these

Biology & Microbiology

Each DNA strand serves as a _____during DNA synthesis

a. replicate b. substitute c. template d. source of nucleotides e. primer

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The organelle involved in the oxygen-requiring process by which the energy harvested from macromolecules is used to generate ATP is the:

A. ER. B. mitochondria. C. chloroplasts. D. nucleus. E. lysosome.

Biology & Microbiology