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Fiesta28 [93]
3 years ago
12

How many electrons need to flow through the electron transport chain of the light reactions to generate one molecule of ATP?

Biology
1 answer:
IceJOKER [234]3 years ago
5 0

Answer:

Since four protons are needed to drive the synthesis of one molecule of ATP, passage of each pair of electrons through photosystems I and II by noncyclic electron flow yields between 1 and 1.5 ATP molecules.

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What is natural selection? Write a definition of this in your own words.
frozen [14]
Natural selection is a process where living things that are better adapted to the environment around them survive longer and produce more off springs .
8 0
3 years ago
In a dihybrid cross involving two autosomal traits on different chromosomes in which the parents are purebred for the opposite f
Simora [160]

Answer:

The question lacks options, the options are:

A) 1 out of 16

B) 3 out of 16

C) 6 out of 16

D) 9 out of 16

The answer is 1 out of 16

Explanation:

This is a DIHYBRID cross because it involves two different genes coding for distinct traits. One of the traits will be dominant while the other recessive. Hence, parents that are purebred for opposite forms of the trait means that one parent is homozygous dominant while the other is homozygous recessive. When these two parents cross, they produce F1 offsprings that all possess the dominant trait but heterozygous/hybrids.

When these hybrids are self-crossed, they produce four different combinations of gametes which when crossed using a punnet square will result in F2 offsprings with a 9:3:3:1 phenotypic ratio according to Mendel's observation.

9 represents offsprings that are dominant for both traits

The two 3's represents offsprings that are recessive for one trait and dominant for the other respectively.

1 represents offsprings that are homozygous recessive for both traits.

Hence, 1 out of 16 offsprings will be homozygous recessive for both traits.

4 0
3 years ago
The constant, dynamic process of continual addition of new bone tissue (bone ____________ ) and removal of old bone tissue (bone
elixir [45]

Answer:

(<u>Bone deposition</u>),

<u>(Bone resorption</u><u>)</u>,

<u>Remodeling</u>

<u>Periosteal</u><u> </u>,

<u>Nedosteal,</u>

<u>The compact bone, </u>

<u> Spongy bone.</u>

Explanation:

The constant, dynamic process of continual addition of new bone tissue (<u>bone deposition</u>) and removal of old bone tissue (<u>bone resorption</u>) is a process called bone <u>remodeling</u>. This ongoing process occurs at both the <u>periosteal</u> (outer) and<u> nedosteal </u>(inner) surfaces of a bone.

It is estimated that about <u>nedosteal</u> of the adult human skeleton is replaced yearly. This process does not occur at the same rate everywhere in the skeleton. For example,<u> the compact bone</u> in our skeleton is replaced at a slower rate than the <u>spongy bone.</u>

5 0
3 years ago
What process may cause lactic acid to form?
MissTica
<span>B) anaerobic respiration</span>
8 0
3 years ago
Which process is NOT fueled by ATP produced in cellular respiration. First exclude the four processes that are fueled by ATP pro
tangare [24]

Answer:

transport of protons (H+) from low concentration in the mitochondrial matrix to high concentration in the mitochondrial intermembrane space

Explanation:

atpase pump can also be called atp synthase. this enzyme catalyses atp formation from adenosine diphosphate and phosphate. it has f1, stalk and f0 components. 3 positive hydrogen ions go through to make 1 adenosine triphosphate molecule. oxidative phosphorylation has to do with the loss of electrons. there would be electrons loss from NADH to FADH2. Cytochromes carries them through different series of transferases from I to IV and while on this positive hydrogen ions are released into mitochondrial matrix

positive hydrogen ions are moved back to lumen through adenosine triphosphate channels. a process called chemiosmosis. the pro

5 0
3 years ago
Read 2 more answers
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