The lethal effects of cell irradiation are measured by cell _____.

a) death
b) survival
c) damage
d) mutation


Ans: b) survival

Biology & Microbiology

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Which cell structure is present during plant cell division but not animal cell division?

a. cleavage furrow. b. cytokinesis. c. spindle. d. sister chromatids. e. cell plate.

Biology & Microbiology

Which of the following phenomena produces magnification?

A) the wavelength of a radiation source B) the refraction of radiation as it passes through a lens C) the thickness of a microscopic specimen D) the numerical aperture of a lens E) the length of an objective lens

Biology & Microbiology

The disease caused by B19 virus, a (papillomavirus/parvovirus/polyomavirus), is known as fifth disease and produces a distinctive rash.

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

Biology & Microbiology

Which pair of vitamins is produced within the human body?

a. A and C b. A and D c. C and D d. C and K e. D and K

Biology & Microbiology