Which of the following statements about ATP is true?
A) It contains five phosphate groups.
B) Extremely stable bonds link the second and third phosphate groups.
C) It contains the sugar glucose.
D) It releases energy when one phosphate group leaves ATP.
Answer: D
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You identify an enzyme involved in a cellular reaction. How does the enzyme affect the reaction equilibrium between reactants and products and the time needed to reach equilibrium?
A. It alters the reaction equilibrium and shortens the time needed to reach equilibrium. B. The reaction equilibrium is unaffected, but it shortens the time needed to reach equilibrium. C. It alters the reaction equilibrium and lengthens the time needed to reach equilibrium. D. The reaction equilibrium is unaffected, but it lengthens the time needed to reach equilibrium.
Which repair mechanism is responsible for repairing damage from UV radiation?
A. Recombinational repair B. Base excision repair C. Mismatch repair D. Nucleotide excision repair E. Nonhomologous end joining (NHEJ)
The normal human karyotype contains __________ chromosomes
a. 22 b. 23 c. 44 d. 46 e. 54
A cell has a deformed membrane protein that is involved in the electron transport chain rendering it incapable of transporting H+ ions. How many ATP can this cell produce from one molecule of glucose?
What will be an ideal response?