Oxygen and carbon dioxide exchange between the circulatory system and tissues occurs at the

a. arteries.
b. veins.
c. venules.
d. arterioles.
e. capillaries.


E

Biology & Microbiology

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a. bound to GMP b. bound to GDP c. bound to GTP d. phosphorylated e. unphosphorylated

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What would be observed by live-cell fluorescence microscopy immediately after HIV entry if HIV is endocytosed first, and then later fuses with the endocytotic vesicle membrane?

A) A spot of red fluorescence will be visible on the infected cell's plasma membrane, marking the site of membrane fusion and HIV entry. B) The red fluorescent dye-labeled lipids will appear in the infected cell's interior. C) A spot of red fluorescence will diffuse in the infected cell's cytoplasm. D) A spot of red fluorescence will remain outside the cell after delivering the viral capsid.

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________ can exist integrated into the bacterial chromosome or as an autonomous plasmid unit in the cytosol

A) Episomes B) Col plasmid C) R factor D) F? plasmid E) Temperate phages

Biology & Microbiology

A recombinant plasmid created during a recombinant DNA experiment:

A) carries and allows expression of a foreign gene of interest. B) can be used to insert bacterial genes into a human. C) consists only of extra-chromosomal bacterial DNA. D) functions to remove specific genes from a plant. E) is used in whole organism cloning.

Biology & Microbiology