By analyzing the chemical formulas, you can determine that this molecule, CH3CH(NH2)COOH, is a(n) ________, whereas the molecule C5H10O5 is a(n) ________
A) cholesterol; amino acid
B) amino acid; sugar
C) nucleotide; glycerol
D) fatty acid; sugar
B
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What is the function of a protein kinase?
A. To remove phosphate groups from proteins B. To cleave membrane phospholipids C. To phosphorylate GDP to generate GTP D. To add phosphate groups onto proteins
Tissues on either sides of an apical meristem
develop into
a. flowers. b. branches. c. lateral meristems. d. leaves. e. more than one of these
The first evidence of where the nerve cord will lie in the embryo is the
a. neural tube. b. chorionic villus. c. embryonic somite. d. primitive streak. e. neural plate.
All the following apply to B cells except
A) originate in the bone marrow. B) reside in the lymphoid tissue. C) mature in the bone marrow. D) coordinate the humoral response by making antibodies. E) play a critical role in both the cellular and humoral responses.