Which stage of cell respiration makes the majority of ATP?
A. fermentation
B. Krebs cycle
C. glycolysis
D. electron transport chain
E. They all produce the same amount.
Answer: D
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Which of the following represents the correct order of appearance of characters in fungal evolution?
A. chitinous cell walls, hyphae, regular septa, complex multicellular fruiting bodies B. chitinous cell walls, hyphae, complex multicellular fruiting bodies, regular septa C. hyphae, chitinous cell walls, complex multicellular fruiting bodies, regular septa D. hyphae, regular septa, chitinous cell walls, multicellular fruiting bodies E. multicellular fruiting bodies, regular septa, hyphae, chitinous cell walls
Which of the following is not true of the reaction catalyzed by RNA polymerases?
A. Template DNA is copied in the 3' to 5' direction. B. The 3'-hydroxyl group of the growing RNA strand is a nucleophile. C. The reaction is magnesium ion-dependent. D. U residues are incorporated into the RNA to pair with T residues of the template. E. The RNA molecule is synthesized in the 5' to 3' direction.
Which of the following air-filled respiratory system structures are common in insects?
a. gills b. tracheal tubes c. lungs d. integumentary surfaces e. air sacs
Select the correct association.
A. proteins-have three forms: monosaccharides, disaccharides, and polysaccharides B. carbohydrates-provide the body with an immediate source of energy C. carbohydrates-composed of amino acids bound together with peptide bonds D. lipids-structural components of hair, fingernails, and claws E. proteins-make up the bulk of the plasma membrane of cells