Crossing over occurs during which step in meiosis?

A. prophase 1
B. anaphase 1
C. prophase 2
D. metaphase 1


A

Biology & Microbiology

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Acetylcholine ____ skeletal muscle and ____ cardiac muscle

a. stimulates; also stimulates b. stimulates; inhibits c. inhibits; stimulates d. inhibits; also inhibits e. binds receptors on; does not bind receptors on

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During RNA processing a(n) _____ is added to the 5' end of the RNA.

a. 3' untranslated region b. a long string of adenine nucleotides c. 5' untranslated region d. coding segment e. modified guanine nucleotide

Biology & Microbiology

Why would some cells, such as erythrocytes, express GLUT1, but other cells, such as liver cells, express GLUT2, which has a different kinetic relationship between v (rate of diffusion) and ?[S] (solute concentration gradient)?

What will be an ideal response?

Biology & Microbiology

If an enzyme consists of a protein component and a nonprotein component, the protein component is referred as the ________.

A. holoenzyme B. apoenzyme C. prosthetic group D. coenzyme

Biology & Microbiology