An organic molecule with the empirical formula C6H12O6
A. may have many structural formulae.
B. is a carbohydrate.
C. is commonly referred to as a sugar.
D. All the choices are correct.
D. All the choices are correct.
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The following will increase the rate of reaction:
A. free energy of product lower than that of substrate B. free energy of product lower than that of transition state C. interactions between atoms during the transition state D. enzyme complementary to substrate E. number of covalent groups combining with substrate during the reaction
The first enzyme in glycolysis is hexokinase. What does it do?
a. Hexokinase facilitates diffusion of glucose through the cell membrane. b. Hexokinase moves glucose into the mitochondria to initiate glycolysis. c. Hexokinase catalyzes the phosphorylation of glucose to produce glucose-6-phosphate. d. Hexokinase destabilizes fructose-1,6-biphosphate to prepare it for cleavage.
Which of the following mammalian lineages contains organisms that lay eggs?
a. Strepsirhini b. monotremes c. Rodentia d. Haplorhini e. marsupials
Members of which group are not deuterostomes?
A. vertebrates B. echinoderms C. arthropods D. chordates