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Flauer [41]
3 years ago
15

A change in one or a few nucleotides that occur at a single point in the DNA sequence

Biology
1 answer:
Alina [70]3 years ago
3 0
This is a point mutation.
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Jill has quite a menagerie of pets and she regularly has to deal with minor animal injuries. So when Johnnie, her rooster, spike
hoa [83]

Answer:

a.) Hydrogen peroxide are highly reactive oxygen compounds used as an antiseptic

b.) Used in treating punctured wounds due to the nature of the wound which helps microorganisms to thrive.

c.) Fizzing associated with hydrogen peroxide use is due to presence of the enzyme catalase.

Explanation:

Hydrogen peroxide is a chemical compound which is made up of two hydrogen atoms and two oxygen atoms. It is powerful oxidizing agent which takes part in biological reactions. This is possible as it can remove electrons from other biological molecules which can damage other cellular components. It is used an an antiseptic to reduce infection because, being a powerful oxidizing agent, it has the ability to react with cell wall of these microorganisms through removal of electrons thereby causing damage to it.

Punctured wounds are narrow in structure which allows obligate anaerobic organisms to thrive because of reduced oxygen flow in the wound. Hydrogen peroxide can effectively eliminate these organisms which are most likely to cause infection in that site because they lack the enzyme called catalase.

Catalase is an enzyme which is present in living cells except obligate anaerobic organisms. It converts hydrogen peroxide into water and oxygen. The fizzing noticed by Jill while cleaning the wound with hydrogen peroxide is due to the catalase in Jill's own cells which converts the hydrogen peroxide to water and oxygen. When oxygen is given off, fizzing reactions are seen at the surface of the wound.

6 0
2 years ago
What is another name for the phospholipid bilayer?
4vir4ik [10]
The answer is C. lipid membrane

The reason for this is, as stated in your question, it is called a phospholipid bilayer.

It's called like that because it is made out of lipids and it also has phosphate groups, while the bilayer part means it just has two layers. Therefore it is commonly also called a lipid membrane. 

6 0
3 years ago
Which checkpoint requires a cell to be of adequate size in order to move to the next phase in the cell cycle? G1/S checkpoint G2
Nitella [24]
G1, G0 means the cell is not participating in the cycle the very first checkpoint is G1
6 0
2 years ago
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I NEED AN ANSWER FOR QUESTION 5 ASAP !!!!
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It’s i don’t know i’m doing this for pointsss good luck
3 0
3 years ago
The musculature includes muscles that move the vertebral column and muscles that move the ribs. lower limb upper limb trunk head
coldgirl [10]

The three muscles which control the vertebral column are the semispinalis, multifidus, and rotatores.

However, these muscles helps tp o the vertebral column and also have a role in proprioception and balance.

<h3>What are muscles?</h3>

Muscles can be defined as a band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body.

So therefore, the musculature includes muscles that move the vertebral column and muscles that move the ribs, lower limb upper limb trunk head and neck

Learn more about the muscular system:

brainly.com/question/1283837

#SP1

3 0
2 years ago
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