| Question |
Answer |
| Enzymes that transfer phosphate groupsd from one molecule to another are known qs phosphioreductases. T/F |
False |
| Physiolof]gically irreversible reactions are those that proceed with a relatively large overall gain in energy? |
False. The loss in energy is not enough energy to go back the other way. |
| The reactions of glycolosis occur only in specialized tissure sucj as the liver. |
False |
| Pyruvate dehydrogenase is the enzyme that converts pyruvic acid to phospho-enol pyruvate. |
False |
| The rates of enzyme catalyzed reactions are influnced by the temperature. |
True |
| Moleculal oxygen is a stronger oxidizing agent than NAD+ |
True |
| Glycolosis does not involve any oxidation-reduction reactions. |
False |
| Lipoic acid is a B vitamin. |
False. |
| Glucose can react directly with O2 to become CO2 and H20. |
True |
| Occaasionaly, there are biological reactions where ATP gets hydrolyzed directly to AMP. |
True |
| Anytime something gets oxidized, something else has to get reduced. |
True |
| It is possible to have comkpetitive enzyme reducers. |
False. They would have to go into the same spot as the substrate, therefore would not activate. |
| Carbohydrates contain morfe energy than fats becausew they are more oxidized. |
False. |
| In mammalian cells, lactic acid can't be oxidized under anaerobic conditions. |
True |
| The TCA cycle can be thought of as the central core of metabolism. |
True |
| The TCA cycle can be thought of as the central core of metabolism. |
Ture |
| Un-catalyzed chemical reaction rates get faster as the temperature is increased. |
Ture |
| The manufacturers of Theragram M claim that this multi-B vitamin product helps to "unlocl" the enwegy of your food. This claim is metabolically valid. |
True |
| Five coenzymes, or cofactors, are required to convert alpha keto glutarate to succinyl CoA. |
True. TPP, Lipoic Acid, CoA, FAD and NAD+ |
| Enzyme catalyzed reactions get faster in direct proportion to the concentration of substrate. |
False. Should be [E]. |
| Dehydrogenases are enzymes that catalyze the transfer of electrons from one molecule to another. |
True |
| Anaerobic metabolism and be damaging to a cell. |
Ture |
| Increasing the reaction temperature of a chemical reaction makes activation energy for that reaction more readily available. |
True |
| Most, if not all, of the water, when glucose is oxidized to CO2 and H2O, is produced in the TCA cycle. |
False |
| Body stores of carbohydrates are sufficient to meet the needs of the body for caloric energy for about 3 months. |
False |
| Non-competitive inhibitors of enzymes inhibit the enzyme by binding to an inhibitor binding fite on the enzyme that is different from the substrate binding site (active site). |
True |
| Pyruvate dehydrogenenase is a multi-enzyme complex. |
True |
| The TCA cycle is shysiologically reversible. |
False |
| ATP contains a B vitamin as part of its structure. |
False |
| Co-enzymes are proteins |
False |
| Oxidative phosphorylationj is a membrane transport process. |
True |
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