_____7. As electrons flow, energy from light is required and thus, involves four electrons aided by an acceptor and a donor. Which pair of molecules assumes this role? a. NADP+ and H2O b. H2O and O2 c. NADP+ and 2H+ d. O2 and 2NADPH _____8. The energy is used to establish the proton gradient across the thylakoid membrane comes from the ____. a. Synthesis of ATP c. Synthesis of NAMPH b. Splitting of water d. Passage of electrons along the ETC of photosystem II. _____9. What are the products of the light reactions that are subsequently used by the Calvin cycle? a. oxygen and carbon dioxide c. carbon dioxide and RuBP b. ATP and NADPH d. electrons and protons
_____7. As electrons flow, energy from light is required and thus, involves four electrons aided by an acceptor and a donor.
Which pair of molecules assumes this role?
a. NADP+ and H2O b. H2O and O2 c. NADP+ and 2H+
d. O2 and 2NADPH
_____8. The energy is used to establish the proton gradient across the thylakoid membrane comes from the ____.
a. Synthesis of ATP
c. Synthesis of NAMPH
b. Splitting of water d. Passage of electrons along the ETC of photosystem II.
_____9. What are the products of the light reactions that are subsequently used by the Calvin cycle?
a. oxygen and carbon dioxide
c. carbon dioxide and RuBP
b. ATP and NADPH
d. electrons and protons
_____10. If photosynthesizing green algae re provided with CO2 synthesized with heavy oxygen18O, later analysis will show that
all but one of the following compounds produced by the algae contain18O label. That one is ___.
a. O2 b. PGAL
c. glucose
d. RuBP
_____11. Where does light-dependent reaction occur?
a. Mesophyll b. Stroma c. Thylakoid compartment
d. Thylakoid membrane
_____12. What substance is used to fix carbon dioxide during light-independent reaction?
a. Malate b. Oxaloacetate c. Pyruvate
d. Phosphoglyceraldehyde
______13. How many PGAL are used to regenerate three molecules of RuBP?
a. 2 b. 3 c. 5
d. 6
______14. Which among the following is referred to as 5-carbon sugar in Calvin Cycle?
a.
NADPH b. PGA
c. PGAL d. RuBP
______15. How many molecules of NADPH does a PGAL need?
a. 1 b. 2
c. 3
d. 4
______1. Which of the following organelles present in the cell is associated with
a. Chloroplast
b, Mitochondrion c. Cytoplasm d. Ribosome
______2. Glycolysis results in the net gain of:
a. 2 ATP b. 4 ATP c. acetyl CoA d.4 NADH
______3. Which of the following is not a requirement of glycolysis?
a. ATP b. NAD+
c. Glucose d. Oxygen
______4. Considering only glycolysis and the conversion of pyruvate to acetyl CoA, how many NADH molecules will be
produced from one glucose molecule?
a. 1 b. 3 c. 2
d. 4
______5. Before entering Krebs cycle, pyruvate is:
a.
isomerized to acetyl CoA b. oxidized c. phosphorylated d. reduced
______6. At the end of the Krebs cycle, where is most of the energy from the original glucose stored?
a. in ATP b. in NADH c. in CO2
d. in pyruvate
______7. Where does glycolysis take place in cells?
a. Cytoplasm b. Mitochondrion c. endoplasmic reticulum d. ribosomes
______8. Glucose molecules commonly enter cells through?
a. Glut 4 transporters b. symports with sucrose c. Antiports with Na+ d. Na/K pump action
______9. How many carbon atoms does each pyruvate feed into the Krebs cycle?
a. 1 b. 3 c. 2
d. 4
______10. The fuel for Krebs cycle is?
a. CO2 b. GTP c. H2O d. Acetyl Co-A
______11. During which of the following phases of does substrate-level phosphorylation take place?
a. Glycolysis b. the citric acid cycle c. the electron transport chain d. glycolysis and the citric acid cycle
_____12. What are the products of anaerobic respiration?
a. Glucose and oxygen b. carbon dioxide c. Lactic acid d. water
______13. Where in the cell does aerobic respiration take place?
a. Nucleus b. Cytoplasm c. Mitochondria d. Cell membrane
______14. How do cells release energy stored in ATP?
a. by releasing adenosine in ATP c. by releasing a phosphate bond in ATP
b. by trapping ATP from carbohydrates
d. by combining ATP molecules in chlorophyll
_____15. Both aerobic and anaerobic respiration energy is transferred by the ___.
a. aerobic respiration b. anaerobic respiration c. oxidation of glucose d. respiration It takes place in the chloroplast
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