Questions On Photosynthesis: Quiz!

20 Questions | By Rositaross | Last updated: Mar 21, 2022 | Total Attempts: 114

Questions

Settings

Create your own Quiz

Questions On Photosynthesis: Quiz! - Quiz

Questions and Answers

1.

Which of these types of organisms produce the biosphere's food supply?
- A.
  
  Autotrophs
- B.
  
  Consumers
- C.
  
  Heterotrophs
2.

How does carbon dioxide enter the leaf?
- A.
  
  Through the chloroplasts
- B.
  
  Through the mesophyll
- C.
  
  Through the thylakoids
- D.
  
  Through the stomata
- E.
  
  Through the vascular system
3.

Cellular respiration and photosynthesis are similar in that both involve _____
- A.
  
  The production of sugars
- B.
  
  The release of O2 into the atmosphere
- C.
  
  Redox reactions
4.

The source of the oxygen produced by photosynthesis has been identified through experiments using radioactive tracers. The oxygen comes from:
- A.
  
  Carbon dioxide
- B.
  
  Glucose
- C.
  
  Light
- D.
  
  Water
5.

The wavelengths of light absorbed by pigments in the granum are mainly in which range?
- A.
  
  Green, which is why plants are green
- B.
  
  The entire spectrum of white light
- C.
  
  Blue-violet and red-orange
6.

Which one of the following colors is most strongly reflected by chlorophyll?
- A.
  
  Red
- B.
  
  Orange
- C.
  
  Green
- D.
  
  Yellow
- E.
  
  Blue
7.

When chloroplast pigments absorb light, _____.
- A.
  
  They gain electrons
- B.
  
  They lose electrons
- C.
  
  Their electrons become excited
- D.
  
  Their protons become excited
8.

The light reactions of photosynthesis generate high-energy electrons, which end up in _____. The light reactions also produce _____ and _____.NADPH ... ATP ... oxygen.
- A.
  
  ATP ... NADPH ... oxygen
- B.
  
  NADPH ... ATP ... oxygen
- C.
  
  Oxygen ... sugar ... ATP
9.

During photosynthesis in chloroplasts, O₂ is produced from _____ via a series of reactions associated with _____.
- A.
  
  CO2 ... the water-splitting photosystem
- B.
  
  H2O ... the water-splitting photosystem
- C.
  
  H2O ... NADPH-producing photosystem
10.

The _____ of photosynthesis performs a task similar to that of the _____ of cellular respiration.
- A.
  
  NADPH ... NADH
- B.
  
  NADP+ ... NADH
- C.
  
  NADH ... NADPH
11.

Both mitochondria and chloroplasts _____
- A.
  
  Use an H+ gradient to produce ATP
- B.
  
  Obtain electrons from water
- C.
  
  Reduce NAD+, forming NADP
12.

In photosynthesis, what is the fate of the oxygen atoms present in CO₂? They end up _____
- A.
  
  In sugar molecules
- B.
  
  As O2
- C.
  
  In sugar molecules and in water
- D.
  
  As molecular oxygen and in sugar molecules
13.

In an experiment, a plant was given _____ containing radioactive ¹⁸O, and the radioactive oxygen atoms were used to make sugar.
- A.
  
  Water
- B.
  
  Oxygen gas
- C.
  
  Carbon dioxide
14.

n photosynthesis, plants use carbon from _____ to make sugar and other organic molecules
- A.
  
  Water
- B.
  
  Chlorophyll
- C.
  
  The sun
- D.
  
  Carbon dioxide
15.

The photosynthetic event known as the Calvin cycle occurs in the _____.
- A.
  
  Stroma
- B.
  
  nucleus
- C.
  
  Thylakoid membrane
- D.
  
  Stomata
16.

The "photo-" part of the word "photosynthesis" refers to _____, whereas "-synthesis" refers to _____.
- A.
  
  The light reactions that occur in the thylakoids ... the incorporation of carbon dioxide
- B.
  
  The reactions in the stomata ... the reactions in the thylakoid
- C.
  
  The Calvin cycle ... the incorporation of carbon dioxide
17.

The Calvin cycle is a series of reactions that:
- A.
  
  Produce NADPH
- B.
  
  Assemble sugar molecules by incorporating carbon
- C.
  
  Convert light energy to chemical energy
18.

Why is NADP⁺ needed in photosynthesis?
- A.
  
  It helps produce ATP from the light reactions.
- B.
  
  It forms part of the water-splitting photosystem.
- C.
  
  It forms NADPH to be used in the Calvin cycle.
19.

Carbon dioxide makes up about _____ of the air we breathe.
- A.
  
  0.03%
- B.
  
  3.00%
- C.
  
  0.30%
20.

What effect does photosynthesis have on the greenhouse effect?
- A.
  
  It increases atmospheric carbon dioxide and thus increases the greenhouse
- B.
  
  It reduces atmospheric carbon dioxide and thus reduces greenhouse warming.
- C.
  
  It increases atmospheric carbon dioxide and thus reduces the greenhouse effect.