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

What is the name for all physical material in the universe?

kotykmax [81]

Matter is the answer

7 0

3 years ago

Read 2 more answers

Which enzyme is used to break down bacteria, yeast, and other microorganisms?

svet-max [94.6K]

Answer:

The use of enzymes or microorganisms in food preparations is an age-old process. With the advancement of technology, novel enzymes with wide range of applications and specificity have been developed and new application areas are still being explored. Microorganisms such as bacteria, yeast and fungi and their enzymes are widely used in several food preparations for improving the taste and texture and they offer huge economic benefits to industries. Microbial enzymes are the preferred source to plants or animals due to several advantages such as easy, cost-effective and consistent production. The present review discusses the recent advancement in enzyme technology for food industries. A comprehensive list of enzymes used in food processing, the microbial source of these enzymes and the wide range of their application are discussed.

Explanation:

5 0

3 years ago

Although they often live in the same habitat, the American toad breeds earlier in the spring than the Fowler's toad does. What c

rjkz [21]

Te 2 species don't interbreed in view of temporal isolation. Transient detachment signifies 'disengaged in time,' so this is an instrument that keeps animal groups from mating since they breed at various circumstances. These distinctions can be a season of the day, season, or even unique years.

5 0

3 years ago

The cholera toxin, an AB exotoxin, attaches an ADP-ribose group to the host's stimulatory G factor (Gs). The normal function of

SCORPION-xisa [38]

<h2>b) option is correct </h2>

Explanation:

Some bacterial toxins cause disease by altering the activity of G protein, cholera toxin is one of them
Cholera toxin catalyse ADP ribosylation of Gs and blocks GTPase activity thus Gs GTP become permanently active
Constitutive activation of Gs protein continuously induce adenylyl cyclase, cytosolic cAMP level rises that leads to activation of protein kinase A (pKA)
Activated pKA catalyse phosphorylation of two transmembrane proteins of intestinal epithelial cells:
CFTR cause excessive outflow of Cl- ion and Na+ H+ exchange cause efflux of Na+ ion, both enters in gut and form Na+ Cl-
Na+Cl- leads to outflow of water from the gut, resulting in diarrhea and dehydration and this condition may cause death of organisms due to loss of water and ions

6 0

3 years ago

Explain how the articulation between the upper and lower jaws effects the action of the teeth and the feeding ability of the car

LiRa [457]

Answer: Carnivores have unique characteristics of their jaw articulation, or the joint between their upper and lower jaws, which enable them to more.

4 0

3 years ago