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
lys-0071 [83]
3 years ago
12

Why do increased temperatures decrease photosystem II activity?

Biology
1 answer:
Alex787 [66]3 years ago
6 0

Answer: Options are not given, here are the options.

a.Thylakoid membranes become more permeable to ions

b.The chlorophyll breaks down

c.The peripheral proteins lose their ability to bind to the transmembrane proteins

d.Water cannot bind to PSII to form oxygen

The correct option is C.

The peripheral proteins lose their ability to bind to the transmembrane proteins.

Explanation:

In photosystem 11, it is the center where light is converted to moving electrons. When the chlorophyll molecule absorb light, the electrons gain energy.

Increase temperature affects the activity of photosystem 11 because the peripheral protein lose their ability to bind to the transmembrane protein which is as a result of high temperature affecting the surface of ionic interactions which is for binding to transmembrane protein.

You might be interested in
18. Approximately when did the first plants and arthropods appear on land?
LenaWriter [7]

Answer:

C. 444 Ma

Explanation:

The first plants that managed to colonize the land appeared around 470 million years ago, while the first arthropods on land appear i the fossil records around 450 million years ago, so we can say that around the period of 444 million years ago they were well established on land. The first arthropods that started to have terrestrial life were almost identical to those in water, with only minor changes that enabled them to breathe and move more easily. The first plants on land were non-vascular plants. They were small as they initially didn't had deep and well established roots.

3 0
3 years ago
Read 2 more answers
What do covelant bonds create ?
aliina [53]

Answer:

There are two types of atomic bonds - ionic bonds and covalent bonds. ... If two atoms differ considerably in their electronegativity - as sodium and chloride do - then one of the atoms will lose its electron to the other atom. This results in a positively charged ion (cation) and negatively charged ion (anion)

Explanation:

5 0
3 years ago
_____ plants are able to reduce photorespiration by creating a _____ concentration of _____ in bundle sheath cells where the cal
il63 [147K]

Answer:

  1. C4,
  2. high,
  3. CO2

Explanation:

3 0
2 years ago
What process is DNA going through inside the nucleus?
Nostrana [21]

Answer:

The nucleus houses the genetic material of the cell: DNA. DNA is normally found as a loosely contained structure called chromatin within the nucleus, where it is wound up and associated with a variety of histone proteins. When a cell is about to divide, the chromatin coils tightly and condenses to form chromosomes. hope this helped!

Explanation:

5 0
3 years ago
What are the main characteristics of a vertebrates
Alecsey [184]
Vertebrates have a back bone. They have living endoskeleton, pharnyx and efficient respiration, advanced nervous system, and paried limbs.
4 0
4 years ago
Other questions:
  • What are two ways that genotype and phenotype are alike
    5·1 answer
  • Suppose that every car on the road burned up about two gallons of gas a day. For each gallon of gas burned, one pound of carbon
    7·1 answer
  • which four elements are found most abundantly in the micro molecules? Carbon, Fluorine, Hydrogen, Iodine, Nitrogen, oxygen, or P
    13·1 answer
  • I NEED HELP QUICK, PLEASE!!!
    11·2 answers
  • What is the life cycle of a low mass star like the sun?
    8·2 answers
  • Which statements describe global warming?
    6·1 answer
  • WILL MARK BRAINLIEST!! WORTH 30 POINTS!!!Which temperature listed below allows for the greatest rate of photosynthesis? Use the
    13·2 answers
  • 15. Compare and contrast food webs based on photosynthesis and chemosynthesis.
    10·2 answers
  • Please help! ASAP this is due today and I really need help.
    8·1 answer
  • Occurs when the individual inherits only one (female) X chromosome
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!