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
vova2212 [387]
3 years ago
9

-

Biology
1 answer:
fiasKO [112]3 years ago
8 0

Explanation:

-Pheophytin

P680 the primary donor of Photosystem II becomes excited and transfers an electron to pheophytin. Pheophytin is the initial intermediate electron acceptor and carrier in Photosystem II; it is a chlorophyll-like molecule that lacks a central magnesium ion.

Further Explanation:

Photosynthesis is a chemical pathway that’s integral to producing energy in plants and other primary producers. Energy in the form of molecules of glucose is produced from light, water and carbon dioxide while oxygen is released. This occurs in several complex steps, photosynthesis is a rate limited reaction, depends on several factors including carbon dioxide concentration, ambient temperature and light intensity; the energy is retrieved from photons, I.e. particles of light, and water is used as a reducing agent. This occurs in the thykaloids, where pigment molecules like chlorophyll reside.

The chloroplast is a membrane bound organelle found in plants. It contains several invaginations of a plasma membrane called the thylakoid membrane. This contains chlorophyll pigments, in stacks called granum, while the internal spaces of the organelle are called the lumen. Liquid surrounds the granum, forming the stroma.

During the light reaction:

  • Light is absorbed by pigments in phosystem II (PSII). This energy is transferred among pigments til it gets to the reaction center, and is transferred to P680; this promotes an electron to a higher energy level where it then goes to an acceptor molecule, like Pheophytin .
  • Water supplies the chlorophyll in plant cell with replacement electrons for the ones removed from photosystem II. Additionally, water (H2O) split by light during photolysis into H+ and OH- acts as a source of oxygen along with functioning as a reducing agent.
  • the electron moves down an electron transport chain (to PS I)where it experiences continuous energy loss. This energy fuels the pumping of H+ from the stroma to thykaloid, leading to the formation of a gradient. The H+ move along their gradient and cross through ATP synthase, into the the stroma.
  • ATP synthase converts ADP and Pi to the energy storage molecule ATP.
  • The electron gets to photosystem I where it goes to pigments at P700. It absorbs light energy, the electron is promoted to a higher energy level, and passed to an electron acceptor. This leaves a space for another electron which is then replaced by one from photosystem II.
  • in the ETC, the molecule NADP is reduced to NADPH by providing H+ ions. NADP and NADPH are integral to the Calvin cycle where monosaccharides or sugars like glucose are produced after the modification of several molecules.

Learn more about Photosynthesis at brainly.com/question/4216541

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

You might be interested in
Need help on this one please
DanielleElmas [232]

Answer:

the last one house cats lions and tigers belong to the same class abd and family

8 0
3 years ago
Plz help!
Leona [35]
Punnet Square
^^^^^^^^^^^^^^^^^^^
7 0
3 years ago
What does scientific validity mean
grigory [225]
Scientific validity is the applicability of a conclusion drawn in the context of a scientific experiment to the world at large.
5 0
3 years ago
In addition to destabilizing glucose for subsequent breakdown, what else does phosphorylation of glucose do
V125BC [204]

Phosphorylation of glucose adopt the pentose phosphate pathway.

<h3>What Phosphorylation of glucose do?</h3>

The phosphorylation of glucose maintains the downhill gradient for metabolism of glucose and extramitochondrial glucose flux through the use of pentose phosphate pathway. Induction of the pentose phosphate pathway and the generation of NADPH may also contribute to protection against death of cells.

Learn more about glucose here: brainly.com/question/397060

7 0
1 year ago
Which substance on the plasma membrane helps identify chemical signals from outside the cell?
nikdorinn [45]

Answer:

The correct answer is carbohydrate chain.

Explanation:

Plasma membrane contain three types of protein  a peripheral protein b transmembrane protein and c GPI anchored protein.

    Some membrane protein basically peripheral proteins contain oligosaccharide chain arranged towards the extracellular region of the plasma  membrane with respect to the surface of that glycoprotein.

   The oligosaccharide chain of glycoprotein play an important role in to identify signals from outside the cell.These signals may include the entry of virus particles inside our body,protein targeting etc.

8 0
3 years ago
Other questions:
  • Which of the following is a function of carbohydartes
    12·1 answer
  • Although controversial at first, the germ theory of disease proposed that microorganisms were the cause of many diseases. Which
    6·1 answer
  • A tan or a sunburn is the result of exposure to ultraviolet light.<br> O True<br> O False
    6·2 answers
  • The biceps and triceps are muscles which raise and lower the forearm. What happens to the biceps and triceps to RAISE the forear
    15·1 answer
  • Which example best illustrates a condition for natural selection to occur
    7·1 answer
  • In which way does the circulatory system rely on the skeletal system
    8·2 answers
  • The human body temperature is normally 98.6°F. As a person exercises, the body temperature starts to increase. As a result of th
    15·2 answers
  • Birds' beaks give us clues about their niches.
    7·1 answer
  • 10. Exchange of gases takes place<br><br>​
    8·1 answer
  • Genetic variation of individual chromosomes occurs during __________.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!