This cellular structure lacks a membrane:
A. microbody
B. nucleus
C. nucleoid
D. endoplasmic reticulum
E. Golgi body
C
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If a very short gene consisted of just 60 bases, the protein made from the gene would be about _________ amino acids long.
Fill in the blank(s) with the appropriate word(s).
If you expose a plant to a light that shines on the right side of a plant, which of the following best
describes why the plant grows toward the light? a. Light destroys auxin, and thus the shaded side grows faster. b. Auxin moves from the shaded side to the lighted side where it stimulates growth. c. Auxin moves from the lighted side to the shaded side where it stimulates growth. d. Light destroys auxin and thus the lighted side grows faster. e. Auxin moves from the shaded side to the lighted side where it inhibits growth.
The kinetic proofreading of aminoacyl-tRNA synthetases involves
a. hydrolysis of aminoacyl-tRNAs due to an incorrect amino acid. b. rejection of incorrect amino acids before aminoacylation. c. hydrolysis of aminoacyl-tRNAs due to an incorrect tRNA. d. rejection of noncognate tRNAs before aminoacylation. e. hydrolysis of aminoacyl-tRNAs due to incorrect codon-anticodon pairing.
A female who is a carrier of the sex-linked gene A has the genotype
a. Aa. b. AA. c. aa. d. XAXa.