Visible light has a wavelength range of:

A. 0.001-100,000 nanometers.
B. 200-740 nanometers.
C. 400-740 nanometers.
D. 200-800 nanometers.
E. 200-400 nanometers.


Answer: C

Biology & Microbiology

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African sleeping sickness is caused by Trypanosoma brucei, a unicellular flagellated protist that infects red blood cells after being injected into the bloodstream. Trypanosoma brucei is which of the following?

A. a diatom B. an alga C. a protozoan D. a slime mold E. an apicomplexan

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In the process of inflammation, the immediate and initial vasoconstriction in the precapillary arterioles is the result of neural impulse by the sympathetic system

a. true b. false

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"DNA footprinting" is a technique that can be used to identify:

A. a region of DNA that has been damaged by mutation. B. the position of a particular gene of a chromosome. C. the position of internally double-stranded regions in a single-stranded DNA molecule. D. the specific binding site of a repressor, polymerase, or other protein on the DNA. E. All of the choices given can be identified by this technique.

Biology & Microbiology

Member of the genus Cytophaga contribute significantly to the process of wastewater treatment.

Answer the following statement true (T) or false (F)

Biology & Microbiology