3/10/2018 I. This molecule enters the Citrie Acid (Kreba) Cycle A. Pyruvate B. N
ID: 208248 • Letter: 3
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3/10/2018 I. This molecule enters the Citrie Acid (Kreba) Cycle A. Pyruvate B. NADH C.Acetyl CoA D. FADH2 E. None of the above. 2. The net products of the Glycolysis frem exidation of I glucose are A. 2Pyruvate, 2NADH, 2ATP B. NADH,ATP C. SNADH, 4FADH2, 2 ATP,4 CO2 D. 6NADH, 2FADH2, 2ATP, 4 C02 E. None of the above. 3. This organelle has hydrelytic Enzymes iavolved ln intracellular digestion 4. CAM plants can handle bot dessert climates A. They opes their stomata for 2 hours per day B. They only open their stomats on eloudy days C. They only open their stomata during the day D. They only open their stomata at night E. None of the above. A. Ribosomes B. Roagh ER C. Smooth ER Lysosomes E Gelgi 1. Cellular Respiration occurs in this organelle. 4. Ifa cell contains nacleus, plasma membrane, ribosomes and mitochondria. It can be A. Bacteria B. Plant Cell C. Animal Cell D. Plant or Asimal Cell E. Bacteria, Plant or Animal Cell A. Ribosomes B. Chloroplasts C. Mitochondria D. Cytoplasm E. LysesomesExplanation / Answer
1. A) pyruvate
Pyruvic acid, forms the end product of glycolysis , which combines with co enzyme A, the pyruvate undergoes oxidative decarboxylation so as to form acetyl CoA, which continues the crabs cycle.
2. D) 6NADH, 2FADH2, 2ATP and 4CO2
One cycle of glycolysis gives rise to 3 NADH, 1 FADH2 and 1 ATP. But, there are 2 molecules in glycolysis which contribute to the cycle, DHAP and glyceraldehyde 3 phosphate.
3. D) lysosomes
The hydrolytic enzymes present in lysosomes are acid hydrolases which help in break down of the proteins, nucleus acids as well as polysaccharides.
4. D) they open their stomata at night.
CAM plants are adapted to the environments . Some examples are pineapples and cacti. They are adapted so as to minimise respiration in the presence of light. As a result, they open their stomata at night, so that CO2 would diffuse in the leaves. The CO2 gets fixed in the oxaloacetate by the enzyme PEP carboxylase.
1. C) Mitochondria
Cellular respiration is a process that occurs in many steps where there is creation of energy from the molecules of food as well as from nutrients. This process starts in the cell’s cytoplasm and mitochondria functions as the primary organelle where the process would continue and complete.
4. D) Plant or animal cell.
It cannot be bacterial cells since bacterial cells do not contain ribosomes. But, plant cells contain all of these organelles.
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