Which of the following reactions makes wine less acidic, and is important for good flavor when grapes with higher acidity are used?

A) sugar ? ethanol
B) ethanol ? acetic acid
C) malic acid ? lactic acid
D) carbon dioxide ? sucrose
E) sugar ? CO2 + H2O


C

Biology & Microbiology

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In the production of transgenic plants, what selectable marker is most commonly used to indicate that a cell has taken up the T DNA that includes the cloned gene?

A. Ampicillin B. Neomycin C. Streptomycin D. Kanamycin

Biology & Microbiology

Action potentials are propagated in a one-way direction down a neuronal plasma membrane because ____

a. the action potential is of insufficient intensity to stimulate the voltage-gated ion channels behind it b. the adjacent channels upstream from the action potential are ligand-gated c. the adjacent channels upstream from the action potential are in a refractory period d. voltage-gated ion channels are suppressed e. the adjacent channels upstream from the action potential are at their threshold potential

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In genetically altered mice, genes are transferred by injection into ____________________ that are

____________________ into a foster mother. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The activity of ________ would be quickly undone in the absence of single-stranded binding protein

A) DNA helicase B) DNA ligase C) DNA polymerase III D) primase E) DNA polymerase I

Biology & Microbiology