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Fittoniya [83]
3 years ago
10

How do mutations affect natural selection?

Biology
2 answers:
never [62]3 years ago
6 0

Answer:C: reproduce

They affect how likely an organism is to survive and

reproduce

Explanation:

I am Lyosha [343]3 years ago
3 0

Answer:

the answer is C

Explanation:

These variations often alter gene activity or protein function, which can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection)

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In the citric acid cycle, the enzyme succinate dehydrogenase catalyzes a reversible reaction using FAD/FADH2 as an oxidizing/red
Aliun [14]

The statement which best explains how the redox component of this reaction contributes to the reaction's ability to be reversible under cellular conditions is; <em>Choice D: The change in the biochemical standard reduction potential is small.</em>

Discussion:

A reversible process is one in which the system and environment can be restored to exactly the same initial states that they were in prior to when the process occurred, if we go backward along the path of the process.

  • However, the necessary condition for a reversible process is therefore the quasi-static requirement.

  • The quasi-static requirement in this case is that the change in the biochemical standard reduction potential is small.

Read more:

brainly.com/question/13195211

5 0
3 years ago
calcium signaling in individual app/ps1 mouse dentate gyrus astrocytes increases ex vivo with aβ pathology and age without affec
irakobra [83]

Astrocytes are a group  of cells with functional characteristics and distinctive morphological that vary within specific areas of the brain.

For healthy brain function, astrocytes are essential. those become reactive in the case of Alzheimer's disease, which impacts the signaling properties. while experimenting, there was the measurement for instinctive calcium transients ex vivo in hippocampal astrocytes in brain slices containing the dentate gyrus of  9-month-old  and 6-month-old APPswe/PSEN1dE9 mice. when they investigated the duration of calcium transients and frequency concerning amyloid-β (Aβ) pathology, the proximity of the astrocyte to Aβ plaques, and aging. there was no change in spontaneous calcium-transient properties of 6M APP/PS1 astrocytes compared to wild-type astrocytes, whereas there was hyperactivity in 9M APP/PS1 astrocytes compared to wild -type,  which were longer in duration, also there was an effect of aging too, there was an increase in calcium in the 9-month astrocytes than to the 6-month astrocytes, also there was an increase in the calcium waves in the 9-month astrocytes because of the increase network activity. The findings were that the change in calcium signaling in individual astrocytes of APP/PS1 mice is because of both pathology and aging but these don't have any impact on changes in the astrocyte network activity, which leads to helping to understand changes in neuronal physiology.

To know more about neuronal physiology refer to the link brainly.com/question/17060419?referrer=searchResults.

#SPJ4

3 0
1 year ago
In a cross of AaBb x AaBb, what fraction of the offspring can be expected to express one of the two dominant alleles, but not bo
Zepler [3.9K]

Answer: 1/4 (4 out of 16 offsprings express one of the two dominant alleles)

Explanation:

The dominant alleles are A and B

At the end of the cross AaBb x AaBb, 16 offsprings would result. They are as follows: AABB, AABb, AaBB, AaBb

AABb, AAbb, AaBb, AABB,

AaBB, AaBb, aaBB, aaBb,

AaBb, Aabb, aaBb, aabb.

Of all, only 4 offsprings (aaBb, aaBB, AAbb, Aabb) expresses one of the A or B. so 4/16 = 1/4

6 0
4 years ago
Although energy in an ecosystem is conserved, it changes forms as it flows through the system. During the process of photosynthe
AlekseyPX

Answer:

The correct answer will be-

1. Solar energy

2. Chemical energy

Explanation:

Photosynthesis is a complex process which takes place in green plants and algae. The process produces glucose molecule which is used by the plants to synthesise the energy molecules in the form of ATP and in the synthesis of other molecules.

The photosynthesis metabolic reactions synthesise glucose molecules using the carbon dioxide and water taking place in the presence of sunlight. Thus, the reaction converts the solar energy from the sun to the chemical energy stored in the bonds of glucose.

Thus,  Solar energy and Chemical energy are the correct answers.

4 0
3 years ago
Which of the following structures is not found in bryophytes?
WINSTONCH [101]

Answer: The answer is ROOT

Explanation: Briophytas belong to the plantae kingdom, therefore they have a cell wall in their cells, and chloroplasts. They have sporangia (structure where the spores are produced and stored)  but they do not possess proper roots. Instead they have a structure called "rhizoid" whose function is the fixation to the substrate.

3 0
4 years ago
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