- 7. Select the correct statements about enzymes: They are proteins D They reduce the rate of enzymatic reactions D They are specific D They are always simple proteins D They are capable to be regulated
- Match each of the following characteristics listed below with the appropriate viruses: 17.They possess both DNA and RNA 18.They have nucleocapsid 19.hey have cell wall 20.They reproduce by binary fission A. Naked viruses B. Enveloped viruses C. Both A and B D. Neither A no B
- the hydrogen from cytoplasmic NADH to mitochonoria Choose one correct answer: 2. Reactions of aerobie glucose breakdown occur A. only in the cytosol B. only in mitochondria C. in the cytosol and mitochondria D. in lysosomes E. in the endoplasmic reticulum 3. Glucose {}^14C at 1^st position was incubated in a medium containing enzymes from the pentose phosphate pathway. The label was found in A. CO_(2) B. ribulose .5-phosphate C. ribose-s - phosphate D. xylulose . 5-phosphate E. none of the above 4. The dehydrogenation reaction of the substrate in the Krebs cycle occurs during the conversion: A. citrate-cis -aconitate B. isocitrate -a-ketoglutarate C. succinyl-CoA -I succinate D. fumarate -malate E. cis-aconitate isocitrate 5. Synthesis of ATP not coupled with electron transfer by respiratory chai enzymes, is called: A. common catabolic pathway B. tissue respiration C. free oxidation D. substrate-level phosphorylation E. oxidative phosphorylation Select all the correct answers: 6. FAD is a coenzyme for: A. succinate dehydrogenase B. pyruvate dehy drogenase c a-ketoglutarate dehydrogenase D. fumarase E. isocitrate dehydrogenase
- 1. Consider a person whose diet provides a daily energy intake of 10,500 k.I and activities result in their body consuming 9500 kJ of energy daily. If this situation continues for several months.the possible outcome would be: A gradual rise in basal metabolic rate. B. The person increases their mass by several kilograms of fat tissue. C. The energy requirements of daily activities will rise to consume 10,500 kJ. D. An increase in from the body to dissipate excess energy. __ 2. In order to lose body fut, diet and exercise must be organised so that the energy value of the food intake is: -A. Less than the energy used daily B. More than the energy used daily C. Equal to the daily energy use D. Greater than the daily exercise 3. Human body core temperature is usually maintained within which of the following ranges? A. 35.0-37.5^circ C B. 36.5-38.5^circ C C. 36.5-37.5^circ C D. 35.0-38.5^circ C 4. Before converting amino acids into intermediates for energy metabolism, they must first undergo __ . A denaturation A. denaturation c detoxification D. depeptidization E oxidation . 5. The conversion of triglycerides to glycerol and fatty acids is called __ A. triglycerolysis B glycolysis C. gluconeogenesis __ D lipolysis E. liposuction 6. Glycogen in muscle is used to __ A. contribute to the maintenance of blood glucose B. convert glucose to amino acids C. convert glucose to fats D. fuel the activity of that muscle exclusively __ E. both fuel muscle activity and maintain blood glucose 7. When a person sits on a metal chair on a cold day, they feel the cold of the metal.Th an example of __ . A. conduction B. convection C. radiation D. evaporation E. cold feet 8. What is an increase in body temperature to greater -than-normal levels called? A. conduction
- acid cyelels, me involved in the intermediate stage of reactions B acetyl-Co between acrobic alycotysis and the tricarbosylie c D Pyruvate hydrogenase citrate succinate enyde-J-phosphate lactate rodphosphogluconate cis-aconitate high-energy bond is formed in the reaction of the TCA cycle: isocitrate - a-ketogrecinyl- a-ketoglutarate -succinyl-CoA succinate 0.25 the oxidation of FADH,cannot be greater than: B. 0.5 1.0 D. 1.5 E. 2.0 18. The energy source for the reaction of oxaloacetate formation from pyruvate: A. one ATP molecule . B. two ATP molecules C. one GTP molecule D. two GTP molecules E. one UTP molecule 19. The largest total amount of glycogen in the human body can be found A. in the liver B. in skeletal muscles C. in the kidneys D. in the heart muscle E. in adipose tissue 20. The rate of gluconeogenesis in the liver increases with A. an increase in the ratio of ATP/ADP B. a decrease in the concentration of fructose 1,6-bisphosphate C. an increase in the concentration of AMP D. a decrease in the concentration of acetyl-CoA E. an increase in the concentration of glucose Select all the correct answers: 21. Coenzymes of the dehydrogenase complex which are derivatives of vitamins A. thiamine pyrophosphate B. lipoic acid C. coenzyme A D. FAD E. NAD 22. The substrates for microsomal oxidation are: A.pyruvate B. cholesterol C. indole D. benzene E. acetyl-CoA 23. Blood glucose levels increase with an increase in the rate of: A. the pentose phosphate pathway B. glycolysis C. glycogen mobilization D. glycogen synthesis E. gluconeogenesis
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