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HACTEHA [7]
3 years ago
14

How are electrons lost replaced in photosystem II?

Biology
1 answer:
timofeeve [1]3 years ago
4 0

Answer:

Water is split to yield two electrons, with oxygen and two hydrogen ions as by-products.

Explanation:

The electron lost from the reaction center is replaced with an electron that comes from water. When two water molecules are split, four electrons and four protons are released.

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In what two ways is the krebs cycle important for making atp
ella [17]

Answer:

The krebs cycle produces two ATP and energy carrying molecules that are used to produce more ATP in the electron transport chain.

Explanation:

5 0
3 years ago
If all 5' and 3' splice sites were always used to process the pre-mRNA into mRNA, how many possible distinct mRNA sequences woul
lord [1]

The question lacks the diagram. The diagram has been attached below.

Answer:

1.

Explanation:

Exons may be defined as the coding region of the RNA whereas introns are the non coding region of the RNA. The introns must be removed out from the RNA to makes it functional molecule.

The splicing of the given molecule results in the formation of single mRNA. The 1 splicing of the introns remove intron A whereas the second splicing results in the removal of intron B. The functional mRNA consists of the mRNA with exon 1,2 and 3.

Thus, the answer is 1.

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3 years ago
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Answer:

THE ANSWER IS A C E D,

B) meat, and goat wool.

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3 years ago
Read 2 more answers
A cheetah, like those shown below at left, and a paramecium, like the one shown below at right, are both living things. Accordin
Natalka [10]

The correct option for this question is as follows:

a) they are made of many cells

b) they are made of one or more cells

c) they come from the same kind of cell

d) they come from noncellular structures

Answer:

The correct answer is - option b. they are made of one or more cells

Explanation:

The cell theory has three major parts that are; the cell is the basic and physiological unit of the organism, all living organisms are made up of one or more cells, new cells come from the pre-existing cells.

On the basis of the cell theory, we can say that all organisms including the cheetah that is a multicellular organism or paramecium a single-celled organism, are made up of one or more cells.

5 0
2 years ago
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