Which of the following is true about the \"R\" state of hemoglobin? A) It contai
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Which of the following is true about the "R" state of hemoglobin? A) It contains fewer interactions compared to the "T" slate. B) It has a higher affinity for oxygen. C) It is more flexible compared to the "T" state. D) It adopts the "R" state conformation when oxygen binds to the "T" state E) All of the above. Most enzymes arc proteins, but a small number of enzymes are___ A) carbohydrates B) lipids C) deoxyribonucleic acids D) ribonucleic acids E) saccharides Why do cells use enzymes to carry out biochemical reactions? A) In order to regulate the reactions taking place inside the cell. B) In order to carry out reactions without the use of organic solvents. C) In order to minimize the production of side products. D) In order to accelerate the rate of reactions. E) All of the above. Enzyme substrate complex is also called the ___? A) Menten complex B) enzyme-product complex C) Michaels complex D) transition state complex E) intermediate complex Which of the following statements about enzymes is false? A) Enzymes are biological catalysis. B) Enzymes accelerate reactions by lowering the activation barrier. C) Enzymes push the reaction equilibrium toward product formation. D) Enzymes can denature under a highly acidic condition. E) Enzymes carry out multiple rounds of a given chemical reaction.Explanation / Answer
10. The correct answer is option E. Hemoglobin in T (Tense state) has less affinity for oxygen than R (Relaxed state). Hence R state is more flexible than T state. Slat bridges formed between the histidine 146 and lysine 40. This conformation state also changes when it is bind to oxygen.
11. The correct answer is option D. All enzymes are proteins but small amount of enzymes are RNA based biological catalysts called ribozyme exist. This ribosomes are complex of protein and catalytic RNA components.
12. The correct answer is option E. Enzymes are catalyst, which can speed up the reaction between the substances and minimize the use of solvents and the production of side products. Enzymes work by lowering the activation energy of reactions.
13. The correct answer is option C. In the first step of binding, substrate binds reversibly to the enzyme and form enzyme substrate complex. This complex is also called as Michaelis-Menten complex.
14. The correct answer is option C. Enzymes are speed up the process. It does not stop the reaction for reaching equilibrium state toward product formation.
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