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
Gala2k [10]
3 years ago
7

Where do the electrons entering photosystem ii come from?

Biology
1 answer:
dangina [55]3 years ago
8 0

In photosystem ║, the chlorophyll molecules releases 2 energized electrons; the electrons are placed by 2 electrons from a water molecule,forms oxygen gas (o2) and 2 hydrogen ions.

Explanation:

Photosystem ║is the protein complex in the light dependent reactions of oxygenic reactions of photosynthesis. The energized ions are replaced by oxidizing water to form hydrogen ions and molecular oxygen.

During photosystem ║, light strikes a photosynthetic pigment, the absorbed energy bounces to the chlorophyll molecules in the reaction center, it releases two energized electrons, the electrons are placed by two electrons stripped from a water molecule, forming oxygen gas(02) and 2 hydrogen ions.

The energized electrons are transferred to plastoquinone and are used to reduce NADPH are used in non- cyclic electron flow.

You might be interested in
When a molecule absorbs a photon, one of its electrons is raised to the ______ state.
77julia77 [94]

The correct answer is: D) excited

A molecule is in an excited state when its energy level is higher than the ground state. That molecule stays in excited state for short time and then returns to a state with lower energy. This return to a lower energy level is described as decay and is the inverse process of excitation.

The transition from ground to excited state of an atom is possible if electrons gain energy that is higher than the difference in energies between the two energy orbits.

7 0
3 years ago
Which of the following organisms represents a list of nekton animals.
zhuklara [117]
I believe the correct answer is C. Nektons include bony fish and squid.
4 0
4 years ago
What is the main difference between photosynthesis and cellular respiration?
allsm [11]

Answer:

D. Cellular respiration releases oxygen and photosynthesis releases carbon dioxide

4 0
3 years ago
How can scientists investigate the impact of limiting factors in an ecosystem?
olchik [2.2K]
If the presence or absence of a factor limits the growth of the ecosystems elements, it is called a limiting factor . There are several abiotic factors that limit ecosystem growth, including temperature, precipitation, sunlight, soil configuration, and soil nutrients
4 0
3 years ago
Read 2 more answers
What type of relationship does a cat and tapeworm have?
stellarik [79]

Answer:

Parasitism.

Explanation:

Parasitism is an association in which one organism, lives on another, the host, deriving benefit from it and causing harm to it.

The tapeworm here is a parasite and it lives inside the cat's(host) body where the tapeworm is specialized for its mode of life. It survive and reproduces very well without needing another specie because it is a hermaphrodite. It causes loss or poor development of unwanted organs such as the digestive, sense organs and muscles. Its long flattened body also provides a large surface area for absorption of nutrients too.

7 0
3 years ago
Other questions:
  • The domestication of plants allowed humans to found the first permanent settlements because food supplies became more __________
    14·2 answers
  • A particular star is orange. Another star that is much cooler is expected to be. red white blue green
    9·2 answers
  • Which three human activities lead to a loss of terrestrial habitat? a.conservation b.farming c.deforestation d.construction
    7·2 answers
  • Energy for the cell’s use is stored when?
    5·2 answers
  • What are some ways that plant seeds scatter away from a parent plant?
    9·1 answer
  • An objects ... forming car center of the universe but its ... can change from planet to planet if you increase the mass of a pla
    7·1 answer
  • Why are liners laid down at the bottom of a landfill before waste is deposited in the landfill?
    9·2 answers
  • s there any significance to (a) a warm water bath at 40*C and (b) the time required for the colour change to occur?
    10·1 answer
  • Pls help me on this I’ve asked 3 times already , biology ppl
    14·1 answer
  • Cuantos electrones se necesitan para formar una carga de-38 uC sabiendo que la carga de un solo electrón es -1.6x10-19 C​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!