Small regulatory RNAs are known to be:

A. bound by Drosha in the cytoplasm.
B. recognized by DGCR8 in the nucleus.
C. cleaved by Dicer in the nucleus.
D. transported to the nuclease as fully processed miRNA.


B

Biology & Microbiology

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A defect in the HoxA-3 would most likely result in:

A. defects of the thyroid. B. defects of the limbs. C. an enlarged heart. D. defects of the lungs. E. abnormal positioning of the kidneys.

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The binding of a plant hormone to its receptor

typically induces

a. an increase in membrane permeability. b. an enzyme-substrate cascade. c. an inhibition of protein synthesis. d. a change in gene expression. e. increased DNA replication activity

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Virtually all chemical changes that take place in cells require ________, molecules that greatly increase the rate at which a chemical reaction occurs.

A) proteins B) DNAs C) Enzymes D) carbohydrates E) emzymes

Biology & Microbiology

Which of the following is an active enzyme?

A) apoenzyme B) cofactor C) coenzyme D) holoenzyme E) subtrate

Biology & Microbiology