1. Which of the following is the site of ATP synthesis in chloroplasts? A) smoot
ID: 257592 • Letter: 1
Question
1. Which of the following is the site of ATP synthesis in chloroplasts?
A) smooth outer membrane B) inner membrane space C) stroma D) thylakoid membrane E) thylakoid compartment
2. The photosynthetic electron transport system includes the transmembrane complexes PSI, PSII and
A) PSIII. B) cytochrome a3. C) cytochrome b6f. D) cytochrome c. E) proton translocating ATP synthase.
3. In the dark reactions of photosynthesis, glyceraldehyde-3-phosphate is converted to dihydroxyacetone phosphate by___.
A) phosphoglucoisomerase B) triose phosphate isomerase C) glyceraldehyde-3-phosphate dehydrogenase D) phosphotriose epimerase E) phosphoglycerate kinase
4. Which of the following is (are) FALSE about photorespiration?
A) RuBP carboxylase oxygenates ribulose bisphosphate to form 2-phosphoglycolate and 3- phosphoglycerate. B) The reaction provides an additional mechanism to generate ATP and NADPH. C) The C4 cycle minimizes the need for photorespiration. D) CO2 and O2 compete for binding the RuBP carboxylase active site. E) Photorespiration is thought to function as a protective mechanism to allow dissipation of unused energy.
5. Which mechanism is the method by which antenna complex chlorophylls funneled energy toward the reaction centers?
A) fluorescence B) internal conversion C) resonance energy transfer (exciton transfer) D) electron transfer E) none of the above
6. Which of the following is TRUE regarding the difference between chlorophyll structures and heme?
A) Chlorophyll structures contain copper rather than iron. B) Chlorophyll structures typically have five rings while heme typically has four. C) Chlorophyll often has fewer R groups attached to the ring system that heme. D) Chlorophyll metal atoms coordinate to the nitrogen atoms from the ring whereas heme iron atoms coordinate to carbon atoms. E) All of the above are true.
7. Which of the following statements about the triacylglycerols stored in adipose tissue is NOT correct?
A) They are hydrolyzed to form fatty acids and dihydroxyacetone. B) They are hydrolyzed by a lipase that is activated by covalent modification. C) They release fatty acids that can be oxidized to CO2 and H2O to provide energy to the cell. D) They can yield a precursor of glucose. E) They are mobilized by epinephrine or glucagon.
8. Which of the following best describes the order of reactions that occur in b-oxidation of fatty acids?
A) Oxidation, hydration, reduction, thiolysis B) Reduction, dehydration, reduction, condensation C) Hydration, oxidation, oxidation, thiolysis D) Oxidation, hydration, oxidation, thiolysis E) Condensation, reduction, dehydration, reduction
Explanation / Answer
Ans to the first question (1):
ATP synthesis in plants take place with the help of enzyme ATP synthase.
This enzyme is located in the thylakoid membrane.
Thus correct answer is (d)
Thylakoid membrane.
Ans2: (d) Cytochrome C
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