E) six molecules of ATP are used and six molecules of ATP are produced Why is gl
ID: 102359 • Letter: E
Question
E) six molecules of ATP are used and six molecules of ATP are produced Why is glycolysis described as having an investment phase and a payoff phase? A) It both splits molecules and assembles molecules. B) It attaches and assembles molecules. B) It attaches and detaches phosphate groups. C) It uses glucose and generates pyruvate. D) It shifts molecules from cytosol to mitochondrion. E) It uses stored ATP and then forms a net increase in ATP. Chemiosmotic ATP synthesis (oxidative phosphorylation) occurs in A) all cells, but only in the presence of oxygen. B) only eukaryotic cells, in the presence of oxygen. C) only in mitochondria, using either oxygen or other electron acceptors. D) all respiring cells, both prokaryotic and eukaryotic, using either oxygen or other electron acceptors. E) all cells, in the absence of respiration. Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle? A) CO_2 and glucose B) H_2 O and O_2 C) ADP, j, and NADP^+ D) electrons and H^+ E) ATP and NADPH Where does the Calvin cycle take place? A) stroma of the chloroplast B) thylakoid membrane C) cytoplasm surrounding the chloroplast D) interior of the thylakoid (thylakoid space) E) outer membrane of the chloroplast In any ecosystem, terrestrial or aquatic, what group(s) is (are) always necessary? A) autotrophs and heterotrophs B) producers and primary consumers C) photosynthesizers D) autotrophs E) green plants When oxygen is released as a result of photosynthesis, it is a direct by-product of A) reducing NADP^+. B) splitting water molecules. C) chemiosmosis. D) the electron transfer system of photosystem I. E) the electron transfer system of photosystem II.Explanation / Answer
12. Why is glycosis described as having an investment phase and a payoff phase
ans) It uses stored ATP and then forms a net increase in ATP. Hence option, E is correct
It both splits molecules and assembles molecules. Hence this statement is wrong. Hence option, A is incorrect
It attaches and detaches phosphate groups, it not related to glycosis investment phase so enzyme Hexokinase involves addition phosphate groups and phosphates removal of phosphate group. Hence this option B is incorrect
It used glucose and generate pyruvate During glycosis starting molecules is glucose and ending molecules is pyruvate. It is not under investment phase Hence option C is incorrect
It shift molecules from cytsol to mitochondrion. Hence these option D is incorrect.
13) Chemiosmotic ATP synthesis (oxidative phosphorylation) occurs in
Ans) all respiring cells, both prokaryotic and eukaryotic, using either oxygen or other electron acceptors. It means that ATP synthesis occurs in prokaryotic and eukaryotic organism. Hence these option D is correct
all cells, but only in the presence of oxygen. In this statement Not only oxygen but need electron acceptors. Hence option A is incorrect
Only eukaryotic cells, in the presence of oxygen. For chemiosmotic synthesis of ATP need not only oxygen but also electron acceptors are needed. Hence option B is incorrect
Only mitochondria, using either oxygen or other electron acceptors. Hence these option C is incorrect
all cells, in the absence of respiration. In given statement absence of respiration means that lack of oxygen , it is not possible for chemisosmotic ATP. Hence option E is incorrect.
14) Which of the following are products of the light reactions of photosynthesis that are utilized in the calvin cycle?
During light reaction products are ATP and NADPH are produced. These can be utilized in the dark reaction called calvin cycle. Hence option E is correct.
C02 and glucose products are not produced in light reaction Hence option A is incorrect
H20 and 02 products are not produced in light reactions. Hence option B is incorrect
ADP, Pi, and NADP+ are not product in light reactions. Hence option C is incorrect
15) Where does the calvin cycle take place ?
Calvin cycle take place in stroma of the chloroplast . Hence option A is correct
Light reaction take place in thylakoid membrane . Hence option B is incorrect
cytoplasm surrounding the chloroplast. Hence option C is incorrect
interior of the thylakoid membrane does not occur. Hence option D is incorrect
Outer membrane of the chloroplast . Hence option E is incorrect
16) In any ecosystem, terrestrial or aquatic, what group(s) is (are) necessary ?
Autotrophs are important for terrestrial or aquatic ecosystem Hence option D is correct
autotrophs and heterotrophs both are not necessary group. Hence option A is incorrect
producer and primary consumer not required Hence option B is incorrect
photosynthesizer are not required. Hence option C is incorrect
green plants are not required Hence option E is incorrect
17) When oxygen is released as a result of photosynthesis, it is a direct by-product of
Oxygen is released by splitting of water Hence option B is correct
reducing NADP+ not released oxygen. Hence option A is incorrect
chemiosmosis not released of oxygen Hence option is C is incorrect
the electron transfer system of photosytem I. Hence option is D is incorrect
the electron transfer system of photosystem II Hence option is E
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