Which of the following describes active immunity?

a. immunity caused by the body producing antibodies in response to an antigen
b. immunity caused by exposure to a vaccination or other pathogen
c. a naturally occurring immunity caused by genetic factors or physiology
d. a type of immunity caused by an increase in white blood cell productivity


a. immunity caused by the body producing antibodies in response to an antigen

Biology & Microbiology

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Which of the following is an incorrect pairing?

A. magnification; refraction of radiation B. contrast; staining techniques C. numerical aperture; curved glass D. dark field: high contrast E. electron beams; shorter wavelength

Biology & Microbiology

DNA synthesis requires a(n) ____ primer

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

De?ne bacterial transformation.

What will be an ideal response?

Biology & Microbiology

If Hadley cell circulation were the only force that planetary governed rainfall patterns, where should the rainier places on earth be found?

A) near the equator because of the intense solar input. B) at 30°N and S latitude. C) at 60°N and S latitude. D) along mountain ranges. E) A and C.

Biology & Microbiology