Biology 1401 Chapter 8 Photosynthesis

24 Questions | By Vlgarza08 | Updated: Mar 22, 2022 | Attempts: 641

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1.

Carbon atoms of CO(2) are incorporated into organic molecules in a series of dark reactions called
- A.
  
  Carbon reduction.
- B.
  
  Carbon synthesis.
- C.
  
  Carbon fixation.
- D.
  
  Carbon activation.
- E.
  
  Carbon oxidation.
2.

Most plants incorporate carbon dioxide into sugars by means of a cycle of reactions called the
- A.
  
  CAM cycle.
- B.
  
  Carbon cycle.
- C.
  
  Calvin cycle.
- D.
  
  Krebs cycle.
- E.
  
  Electron transport cycle.
3.

Flattened sacs of internal membranes associated with photosynthesis are called
- A.
  
  Chloroplasts.
- B.
  
  Photosystems.
- C.
  
  The stroma.
- D.
  
  Thylakoids.
- E.
  
  Cristae.
4.

In green plant photosynthesis, the electron donor for the light dependent reaction is
- A.
  
  Carbon dioxide.
- B.
  
  Oxygen.
- C.
  
  RuBP.
- D.
  
  Chlorophyll II.
- E.
  
  Water.
5.

In the dark reactions of photosynthesis, CO(2) is added to a five-carbon sugar-phosphate known as
- A.
  
  Cyclic AMP.
- B.
  
  NADH.
- C.
  
  NAD+.
- D.
  
  RuBP.
- E.
  
  CAM.
6.

Light consists of units of energy called
- A.
  
  Electrons.
- B.
  
  Photons.
- C.
  
  Protons.
- D.
  
  Neutrons.
- E.
  
  Pigments.
7.

Visible light has a wavelength range of
- A.
  
  400-700 nanometers.
- B.
  
  200-800 nanometers.
- C.
  
  200-400 nanometers.
- D.
  
  200-700 nanometers.
- E.
  
  0.001-100,000 nanometers
8.

Which of the following has shortest wavelength by highest energy?
- A.
  
  Infrared rays
- B.
  
  X rays
- C.
  
  Gamma rays
- D.
  
  Ultra violet rays
- E.
  
  Red light
9.

Molecules that absorb light are called
- A.
  
  Enzymes.
- B.
  
  Electron carriers.
- C.
  
  Pigments.
- D.
  
  Photosynthesizers.
- E.
  
  Absorbers.
10.

Chlorophyll b absorbs in green wavelengths of light that chlorophyll a cannot absorb. In this respect, chlorophyll b acts as
- A.
  
  An accessory pigment.
- B.
  
  An energizer for photosynthetic bacteria.
- C.
  
  A light absorber in the green light.
- D.
  
  A more efficient pigment.
11.

The photosystem channels the excitation energy gathered by absorption of light by any one of the pigment molecules to a specific "reaction center chlorophyll," which in turn passes the energy to
- A.
  
  Photosystem I.
- B.
  
  Photosystem II.
- C.
  
  The primary electron acceptor.
- D.
  
  The secondary electron center.
- E.
  
  Cytochrome.
12.

Which of the following is common to both cellular respiration and the light reactions of photosynthesis?
- A.
  
  The transfer of electrons to glucose
- B.
  
  The chemiosmotic formation of ATP
- C.
  
  Oxygen is one of the byproducts
- D.
  
  Mitochondria are essential organelles
- E.
  
  Must have light
13.

Photosystem II absorbs photons that are slightly more energetic than photosystem I, because it has a pigment called
- A.
  
  P (680).
- B.
  
  P (700).
- C.
  
  Chlorophyll I.
- D.
  
  Chlorophyll II.
- E.
  
  Retinal.
14.

Photosystem II differs from photosystem I in that ____ is not made directly form the process.
- A.
  
  ATP
- B.
  
  NADH
- C.
  
  NADPH
- D.
  
  Carbohydrates
- E.
  
  Water
15.

The dark reactions of photosynthesis are those that
- A.
  
  Convert chlorophylls into enzymes.
- B.
  
  Convert enzymes into chlorophylls.
- C.
  
  Convert water into hydrogen and oxygen.
- D.
  
  Convert CO(2) into reduced molecules (sugars).
- E.
  
  Only occur in the dark.
16.

In dark reactions, when CO(2) is added to a molecule of RUBP the product is
- A.
  
  Citric acid.
- B.
  
  Glucose.
- C.
  
  Glyceraldehyde-3-phosphate.
- D.
  
  Phosphoglycerate.
- E.
  
  Pyruvate.
17.

The cyclic carbon fixation reactions are also known as the
- A.
  
  Krebs cycle.
- B.
  
  Calvin cycle.
- C.
  
  Citric acid cycle.
- D.
  
  Tri carboxylic acid cycle.
- E.
  
  Blackman cycle.
18.

How many revolutions of the Calvin cycle are required to produce the sugar glucose?
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  5
- E.
  
  6
19.

In which part of the chloroplasts are the Calvin cycle enzymes located?
- A.
  
  Stroma
- B.
  
  Thylakoids
- C.
  
  Grana
- D.
  
  Envelope
- E.
  
  Cristae
20.

The photosynthetic electron transport causes the accumulation of protons in which part of the chloroplast?
- A.
  
  Matrix
- B.
  
  Stroma
- C.
  
  Envelope
- D.
  
  Outer membrane
- E.
  
  Internal thylakoid space
21.

Embedded in the thylakoid membrane and protuding as knobs form the outer surface into the stroma, there are
- A.
  
  Enzymes that fix carbon dioxide.
- B.
  
  Proton channels that synthesize ATP.
- C.
  
  Chlorophyll a and b.
- D.
  
  P(680) and P(700).
- E.
  
  Specialized bundle sheath cells.
22.

What products of light reactions of phtosynthesis are use in the Calvin cycle?
- A.
  
  Oxygen and protons
- B.
  
  Carbon dioxide and water
- C.
  
  ATP and NADPH
- D.
  
  ADP and NADP
- E.
  
  Glucose and oxygen
23.

Most of the atmospheric oxygen occurs as a result of phtosynthesis. From which of the following molecules is the oxygen derived?
- A.
  
  Water
- B.
  
  Carbon dioxide
- C.
  
  Glucose
- D.
  
  Chlorophyll
24.

If they thylakoid membrane became leaky to ions, what would you predict to be the result on the light reaction?
- A.
  
  It would stop ATP production
- B.
  
  It would stop NADPH production
- C.
  
  It would stop oxidation of H(2)O
- D.
  
  It would stop CO(2) fixation