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Lecture 5

BIOL 1201 Lecture Notes - Lecture 5: Cytoplasm, Okazaki Fragments, Reading Frame


Department
Biological Sciences
Course Code
BIOL 1201
Professor
Bill Wischusen
Lecture
5

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MASTERING BIOLOGY 5
1. Identify the chloroplast
a. A.
2. Identify the stroma
a. E.
3. Identify a thylakoid
a. D
4. Which of these equations best summarizes photosynthesis?
a. 6 CO2 + 6 H2O C6H12O6 + 6 O2
5. Where does the Calvin cycle occur?
a. E, stroma
6. The light reactions of photosynthesis use ____ and produce ____
a. Water and NADPH
7. Which term describes ATP production resulting from the capture of light energy by
chlorophyll?
a. Photophosphorylation
8. True or false? The chemiosmotic hypothesis states that the synthesis of ATP generates a
proton gradient that leads to electron flow through an electron transport chain.
a. False
9. According to the chemiosmotic hypothesis, what provides the energy that directly drives
ATP synthesis?
a. Proton gradient
10. Which of the following particles can pass through the ATP synthase channel?
a. Protons
11. True or false? The region of ATP synthase that catalyzes the production of ATP from
ADP and inorganic phosphate spans the chloroplast membrane.
a. False
12. Chloroplast membrane vesicles are equilibrated in a simple solution of pH 5 . The
solution is then adjusted to pH 8 . Which of the following conclusions can be drawn from
these experimental conditions?
a. ATP will not be produced because there is no ADP and inorganic phosphate
in the solution.
13. Which process produces oxygen?
a. Photosynthesis
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14. Which set of reactions uses H2O and produces O2?
a. The light-dependent reactions
15. What is the importance of the light-independent reactions in terms of carbon flow in the
biosphere?
a. The light-independent reactions turn CO2, a gas, into usable carbon in the
form of sugars.
16. T or F? the light-dependent reactions of photosynthesis use water and produce oxygen.
a. T
17. Which of the following molecules is the primary product of photosystem I?
a. NADPH
18. What is the biological significance of the light-independent reactions of photosynthesis?
a. They convert carbon dioxide to sugar.
19. Which of the following statements best describes the relationship between the light-
dependent and light-independent reactions of photosynthesis?
a. The light-dependent reactions produce ATP and NADPH, which are then
used by the light-independent reactions.
20. Which of the following reactions ensures that the Calvin cycle can make a continuous
supply of glucose?
a. Regeneration of RuBP
21. Select the correct molecule that is the main product of the Calvin cycle.
a. G3P
22. What is the basic role of CO2 in photosynthesis?
a. CO2 is fixed or incorporated into organic molecules.
23. Select the most accurate statement describing the basic function of the light reactions of
photosynthesis.
a. The basic function of the light reactions of photosynthesis is the conversion of
solar energy to chemical energy.
24. In the accompanying image, a nucleotide is indicated by the letter _____.
a. B
25. Which of these is a difference between a DNA and an RNA molecule?
a. DNA is usually double-stranded, whereas RNA is usually single-stranded.
26. This is an image of a(n) _____.
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