Question
Which molecule "holds electrons" that can be used for energy transfer in living systems? a dATP b ATP c. Phosphofructokinase d. NAD e. Oxygen Refer to the figure below. What is it? a. Glucose b. ATP c. ADP d. dATP e. Nicotinamide adenine dinucleotide Which statement is FALSE? a. Most organisms have efficient systems to salvage preformed nucleotides. b. Acetyl-CoA's main task is conveying the carbon atoms within the acetyl group to the citric acid cycle to be oxidized for energy production. c. ATP is found in the cytoplasm--but in relatively low levels. As a result, ATP is stored in the liver and released when it is needed by other cells. d. Standard free-energy change (delta Go'): The free energy released when reactants are converted to products under standard conditions. e. delta Go' does not determine the rate of conversion when reactants are converted to products under standard conditions. Which is NOT a characteristic of enzymes? a. They do not become part of the products they produce b. They can be altered during the transition state c. They do not alter the delta Go' of a reaction. d. They raise the energy of activation, E_A e. Most are proteins but some are RNA. Enzymes work by a. raising the activation energy of a reaction and thus speeding up the reaction. b. lowering the activation energy of a reaction and thus speeding up the reaction. c, raising the delta Go' of a reaction and thus speeding up the reaction. d. lowering the delta Go' of a reaction and thus speeding up the reaction. e. changing the standard free energy of the products and speeding up the reaction.
Explanation / Answer
The answers are
6. D. NAD
7. B. ATP
8. C.
9. B. They can be alered during transition state
10.B. Lowering the activation energy of a reaction and thus speeding up the reaction.
