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Home⇒ Medical Science⇒ Biochemistry⇒ Photosynthesis and respiration
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ Which one of the following is a product of both cyclic and noncyclic photophosphorylation? ATP [other wrong options] [Discuss in forum] NADPH O2 Carbohydrate |
Q22 ⇒ A cyclic electron transport process is the characteristic of photosynthesis [other wrong options] [Discuss in forum] methane oxidation sulfide oxidation methane production |
Q23 ⇒ What is the maximum absorption wavelength for photosystem I in green plants? 700 nm [other wrong options] [Discuss in forum] 550 nm 600 nm 750 nm |
Q24 ⇒ The cytochrome c oxidase complex all of these [other wrong options] [Discuss in forum] accepts electrons from cyt c donates four electrons to O2 pumps protons out of the matrix space |
Q25 ⇒ Assume the combined processes of photosynthesis and cellular respiration, the electrons that start as part of H2O at the beginning of the light reactions end up attaching to O2 to make new H2O [other wrong options] [Discuss in forum] NADPH to make new glucose pyruvate to make ethanol electron transport carriers to make O2 |
Q26 ⇒ More ATP is manufactured during __________ than at any other time in all of cellular metabolism. oxidative phosphorylation [other wrong options] [Discuss in forum] fermentation glycolysis the light reactions of photosynthesis |
Q27 ⇒ Which of the following statements about energy metabolism is false? Plants provide the water and CO2 that animals need to carry out respiration [other wrong options] [Discuss in forum] The energy that powers living systems ultimately comes from the sun All animals in some way rely on plants for their energy All eukaryotic organisms carry out respiration in the presence of O2 |
Q28 ⇒ In oxygenic photosynthesis, water is split in order to provide the electrons needed to reduce P680 [other wrong options] [Discuss in forum] O2 needed for the dark reactions electrons needed to reduce NADH electrons needed for cyclic photophosphorylation |
Q29 ⇒ Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation? Light reactions of photosynthesis [other wrong options] [Discuss in forum] Fermentation Dark reactions of photosynthesis Carbon fixation |
Q30 ⇒ The breakdown of glucose occurs by the process known as glycolysis [other wrong options] [Discuss in forum] fermentation anaerobic respiration Krebs cycle |
Q31 ⇒ Which of the following serves as a reactant in photosynthesis and a product in cellular respiration? CO2 [other wrong options] [Discuss in forum] O2 Sunlight ATP |
Q32 ⇒ Glycolysis takes places in the __________ and produces __________ , which in the presence of oxygen then enters the __________ . cytosol; pyruvate; mitochondrion to complete cellular respiration [other wrong options] [Discuss in forum] cytosol; glucose; mitochondrion to complete fermentation cytosol; pyruvate; mitochondrion to complete fermentation mitochondrion; pyruvate; chloroplast to complete photosynthesis |
Q33 ⇒ In algae, photosynthesis takes place in choloroplasts [other wrong options] [Discuss in forum] cell membrane mitochondria none of the above |
Q34 ⇒ If the oxygen is labeled in CO2 and provide this CO2 to a plant, where it is expected to find this labeled oxygen after the plant had undergone photosynthesis? In the carbohydrate produced [other wrong options] [Discuss in forum] In the water used In the NADPH In the oxygen given off by the plant |
Q35 ⇒ The rate of photorespiration in most plants increases at.higher temperatures. Some plants have evolved a somewhat round-about system to deal with this problem. This series of reactions is called C4 pathway [other wrong options] [Discuss in forum] ETS (electron transfer system in light reactions Photosystem II Calvin cycle |
Q36 ⇒ The followings are the products of the light reactions of photosynthesis except glucose [other wrong options] [Discuss in forum] ATP oxygen NADPH |
Q37 ⇒ During the light-dependent reactions of photosynthesis, which of the following does not occur? Carbon dioxide fixation [other wrong options] [Discuss in forum] Splitting of water Release of oxygen Absorption of light energy by photosystems |
Q38 ⇒ What do NAD+, NADP+, and FAD+ all have in common? They are oxidized [other wrong options] [Discuss in forum] They are reduced They have a full complement of electrons They are what is used during carbon fixation in photosynthesis |
Q39 ⇒ Rubisco (RuBP Carboxylase-oxygenase enzyme), glyceraldehyde 3-phosphate, and NADPH all play a role in the dark reactions of photosynthesis [other wrong options] [Discuss in forum] the breakdown of glucose into CO2 cellular respiration when O2 is present alcohol fermentation |
Q40 ⇒ Antenna complexes, electron transport chains, and carbon fixation are all found in plant cells [other wrong options] [Discuss in forum] animal cells bacterial cells association with the reactions of the citric acid cycle |
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