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
boyakko [2]
3 years ago
8

The textbook the quantum efficiency for photosynthesis decreases abruptly when the wavelength of light being used becomes longer

the 680 nm. Which ONE of the following is the explanation for this "red drop"?
A. The reactions that extract electrons from water to make O2 take place in the photosystem that is activated by 680 nm light.
B. Red light inhibits photosynthesis.
C. Photosystem I requires 680 nm light
D. Red light is absorbed CO2 to initate the synthesis of carbohydrates.
Biology
1 answer:
Elis [28]3 years ago
6 0

Answer:

The correct answer will be option- A

Explanation:

Red drop effect is the effect observed by the light present in the spectrum of the wavelength of red light. The effect is observed with the decrease in the quantum yield of the oxygen formed per quantum of light when the wavelength of light exceeds 680 nm.

The decrease of quantum yield is observed due to the fact that the oxygen is formed by the breakdown of the water molecule during light-dependent reaction which is initiated by the PS II which begins the chain at 680nm.

If light exceeds the 680 nm then, PS II will remain inactive and thus will abrupt the dissociation of the water molecule and thus the formation of oxygen during the light-dependent phase.

Thus, option-A is the correct answer.

You might be interested in
A food handler has finished grilling a chicken breast for a sandwich. what should the food handler do before touching the chicke
sladkih [1.3K]
Before the food handler touch the chicken, lettuce, tomato and bun, the food handler should wash his hands first and ensure that he or she is wearing the right equipment when handling the food such as mask, gloves and goggles if necessary to prevent any contamination to the food.
7 0
3 years ago
Read 2 more answers
Genes are located in which part of a cell?
frosja888 [35]

Answer:

chromosome

Explanation:

Thats where they are located

5 0
3 years ago
Assessment of an elderly female client reveals the presence of bilateral pitting edema of the client's feet and ankles and pedal
Mashutka [201]
Right-sided heart failure.
6 0
3 years ago
In a short, detailed paragraph, please answer the following.
katovenus [111]

Answer:

Ans - 1 Photosynthesis begins with the light reactions. It is during these reactions that the energy from sunlight is absorbed by the pigment chlorophyll in the thylakoid membranes of the chloroplast.

Ans-2 The dark reactions of photosynthesis occur in the stroma of the chloroplast where they utilize the products of the light reaction. In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.

Ans-3 The main factors affecting rate of photosynthesis are light intensity, carbon dioxide concentration and temperature.

5 0
3 years ago
Where did the energy to power the light-independent reactions come from?
trapecia [35]

Answer:

oh dum the answer is A

Explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • How much time is needed to form most fossils
    7·2 answers
  • When skeletal muscles contract such that bone segments move closer together, this action is known as: _______
    7·1 answer
  • What do lunar and solar eclipses have in common ?
    6·1 answer
  • At what stage in C. elegans does cell differentiation occur?
    13·2 answers
  • Which group of animal has the greatet known species diversity?
    10·1 answer
  • in a dihybird cross for round and yellow seeds (RrYy × RrYy), what is the probability of having green and wrinkled seeds ?
    11·2 answers
  • Can I get some help please? Thanks!
    14·2 answers
  • What is included in the climax community?
    10·1 answer
  • Is there an advantage for the different
    7·1 answer
  • What is the term used for population moving into an area ?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!