1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Hitman42 [59]
3 years ago
11

The rate of O2 production by the light reactions varies with the intensity of light because light is required as the energy sour

ce for O2 formation. Thus, lower light levels generally mean a lower rate of O2 production.
In addition, lower light levels also affect the rate of CO2 uptake by the Calvin cycle. This is because the Calvin cycle needs the ATP and NADPH produced by the light reactions. In this way, the Calvin cycle depends on the light reactions.
But is the inverse true as well? Do the light reactions depend on the Calvin cycle?
Suppose that the concentration of CO2 available for the Calvin cycle decreased by 50% (because the stomata closed to conserve water).
Which statement correctly describes how O2 production would be affected? (Assume that the light intensity does not change.)
a. The rate of O2 production would decrease because the rate of ADP and NADP+ production by the Calvin cycle would decrease.
b. The rate of O2 production would decrease because the rate of G3P production by the Calvin cycle would decrease.
c. The rate of O2 production would remain the same because the light intensity did not change.
d. The rate of O2 production would remain the same because the light reactions are independent of the Calvin cycle.
Biology
1 answer:
kupik [55]3 years ago
5 0

Answer:

The correct answer is option a.

Explanation:

Yes, the light reactions also depend upon the Calvin cycle. Calvin cycle refers to a phenomenon that is used by the plants and algae to convert carbon dioxide from the atmosphere into sugar, the food needed by the autotrophs in order to grow. The plants rely upon the Calvin cycle for food and energy.  

In the given case, the rate of oxygen production would get diminish as the rate of ATP and NADP+ generated by the Calvin cycle diminishes. Of all the outcomes of the Calvin cycle, ADP and NADP+ are the only ones that get utilized by light reactions.  

The ADP and NADP+ are used up by the light reactions to fuel their reactions. This illustrates that if the rate of ADP and NADP+ generated by the Calvin cycle diminishes the production of oxygen by the light reactions also diminishes.  

You might be interested in
A cell is mostly made up of what substance?
denis23 [38]
Most of the cells are made of mostly Cytoplasm. It contains all the living materials in a cell except for the nucleus. This gel-like area of the cell contains the chemical needed by the cell it resembles the white part of a raw egg.
Hope this helps ^^!
3 0
3 years ago
How does temperature influence air pressure? pls help me
disa [49]

Explanation:

When gas molecules are heated, the molecules move more quickly, and the increased velocity causes more collisions. As a result, more force is exerted on each molecule and air pressure increases. Temperature affects air pressure at different altitudes due to a disparity in air density.

8 0
3 years ago
Red and white colors are incomplete dominance in flowers. What phenotype would you see if the F1 generation if crossed with a re
jekas [21]

Answer:

It will be pink

Explanation:

8 0
2 years ago
We can tell from their structure that fatty acids are a good source of energy because of:
jekas [21]
We can tell from their structure that fatty acids are a good source of energy because of their large number of carbon-hydrogen and carbon-carbon bonds that they contain. Most fatty acids have straight chain compounds with an even number of carbon.
3 0
3 years ago
A young farmer purchases some land in a relatively arid area and is interested in earning a reasonable profit for many years. Wh
Aloiza [94]

Answer:

The correct answer will be option-D

Explanation:

Arid areas are the regions of the world which can be marked with the lack of water conditions, high light intensity and very low rainfall.

Water is one of the primary requirement of the plant without which no plant can survive but the adaptability to the environment allows the existence of the life on earth. There are known species of plants which are adaptive to such arid conditions.

If a farmer is interested in growing plants in such arid conditions hen he should select the plants which could better be adapted to survive in the arid conditions either by avoiding arid condition like storing water, low transpiration, extensive root system and many others.

Thus, Option-D is the correct answer.

3 0
3 years ago
Other questions:
  • Producers use energy from the sun to create _______ , or create chemical energy ?
    12·2 answers
  • What gas is released after the light reaction of photosynthesis
    7·1 answer
  • Snow is a form of _________________.
    10·2 answers
  • I NEED HELP ASAP!!!
    9·1 answer
  • How is diffusion related to smelling the odor of a skunk that is far away
    14·1 answer
  • In a forest ecosystem,clover is eaten by deer, which are eaten by wolves. If the population of clover suddenly decreased what wo
    12·2 answers
  • Describe the lytic cycle.
    14·1 answer
  • Why does every time someone sneezes it sounds like 'ashoe!'?
    13·2 answers
  • What is the technique of filling the viewfinder? How does this help to focus on your subject?
    10·1 answer
  • This one too, please?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!