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
Flauer [41]
3 years ago
14

When light energy excites electrons in photosystem II, where do the electrons to replace them come from?

Biology
1 answer:
Readme [11.4K]3 years ago
4 0
Water is photolysed to produce electrons, H+ ions and O2.

The equations is 2H2O ->4H+ + 4e- + O2
You might be interested in
In Griffith's experiments with Streptococcus pneumoniae, rough nonencapsulated streptococci were converted into smooth encapsula
larisa86 [58]

Answer:

The correct answer is - transformation.

Explanation:

Griffith's experiment was performed by Fredrick Griffith with Streptococcus pneumoniae. Streptococcus P. are rough non encapsulated streptococci that are converted into smooth encapsulated streptococci bacteria in presence of heat-killed smooth encapsulated bacteria.

This experiment was the first experiment that showed that this bacteria can get DNA by the process of transformation.

He suggested that the nonencapsulated bacteria had been transformed into the encapsulated smooth bacteria strain by the transformation process that was somehow part of the dead encapsulated strain bacteria.

Thus, the correct answer - transformation.

3 0
3 years ago
1. What element has 81 protons in the nuclei of its atoms?
lakkis [162]
A little trick i learnt: The atomic number reflects how many electrons there are, and there must be an equal charge. therefore, there are the same amount of protons as there are electrons. so if it has 81 protons, we look for number 81 in the periodic table, Thallium
4 0
3 years ago
Cyclin B1, a key cell cycle regulatory protein in vertebrates, is mostly cytosolic before mitosis. Early in mitosis, however, th
Ludmilka [50]

Answer:

Phosphorylation within the nuclear export signal interferes with the function of the  signal.

Explanation:

In biochemistry, phosphorylation is the addition of a phosphate group (PO4) to a protein or other molecule. Phosphorylation is a major player in protein regulation mechanisms, preventing protein-catalyzed reaction product from accumulating in the body causing problems.

However, in some cases phosphorylation may cause nuclear accumulation of a protein in the nucleus of the cell. An example of this is the protein shown in the question above. In this case, phosphorylation in the nuclear export signal interferes with the signal function, resulting in protein accumulation in the nucleus.

4 0
4 years ago
Which one goes to the right one
-BARSIC- [3]
U still have school its summer
4 0
3 years ago
When dreaming, an individual has periods of no muscle tone or movement, except for eyes, diaphragm, nasal membranes, and erectil
Komok [63]
A.true
Hope it helped :)
4 0
3 years ago
Read 2 more answers
Other questions:
  • You are a nephrologist. a 72 year old female patient presents with advanced kidney failure and you recommend the standard treatm
    10·1 answer
  • Does fungi have cell walls
    6·1 answer
  • Is genome another word for DNA? WILL MARK BRANEIST 
    11·2 answers
  • The current level of folic acid fortification of grain products leads to an intake of about 100 extra micrograms of folic acid p
    15·2 answers
  • The order of grades of coal from lowest energy content to highest energy content is
    8·1 answer
  • Which of the following statements is true? 1. If you don't know a law exists, it's ok to not follow it. 2. People in an experime
    7·1 answer
  • An atom that has 19 protons, 21 neutrons, and 18 electrons has a mass of ____? *
    10·1 answer
  • 25.5.2 Test (CST): Computer-Scored Unit Test
    14·1 answer
  • Which diagram shows the objects arranged so that a new moon would be visible from Earth?
    6·1 answer
  • Under which set of circumstances would the diameter of peripheral blood vessels be the greatest?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!