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Mars2501 [29]
3 years ago
5

A normal bacterial cell carries on the chemical reaction A----------->B. A certain mutant bacterial cell cannot produce subst

ance B. The mutation was most likely the result of a change in the..
1. Ribosome on which enzyme X is made

2. Ability of the DNA to replicate

3. Amino acid sequence of RNA


4. Gene that codes for enzyme X
Biology
2 answers:
vampirchik [111]3 years ago
8 0
The answer is 4 have a good day
GenaCL600 [577]3 years ago
5 0

Answer:

The correct answer is option 4. Gene that codes for enzyme X

Explanation:

Hello!

Let's solve this!

Mutations are a change in the DNA sequence.

We will analyze each of the options:

1. Ribosome on which enzyme X is made: the ribosome cannot suffer mutations.

2. Ability of the DNA to replicate: DNA can suffer mutations, but will not affect the production of substances.

3. Amino acid sequence of RNA: RNA does not suffer mutations

4. Gene that codes for enzyme X: This option is correct because when the gene undergoes a mutation, the enzyme that is encoded by that gene will be affected.

After the analysis we conclude that the correct answer is option 4. Gene that codes for enzyme X

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I would say A or D sorry if this doesn’t help
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The circulatory system delivers oxygen and nutrients to the cells and transports wastes away from cells.
VikaD [51]

Answer:

True.

Explanation:

Circulatory system may be defined as the network of the various blood vessels that helps in the transportation of materials inside the body. Circulatory system is also known as cardiovascular system.

The main function of the circulatory system is to delivers the oxygen to each and every cell of the body. The nutrients are transported into the cells via blood and waste materials are transported away from the body. This system is also important to provide immunity to the body.

Thus, the correct answer is option (a).

6 0
4 years ago
Why is water considered to be abiotic?
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The sapling of a tree can cannot be considered a herb justify the statement
inna [77]

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3 0
4 years ago
Making changes to the secondary structure of hair has a different outcome than making changes to its tertiary or quaternary stru
DanielleElmas [232]

The outcome differs in the way that the protein folds itself at each level. The changes in the way that it folds lead to:

modifications in the function, shape or in the combination with other proteins.

Protein has different levels of structure. Each of them is related to how the amino acids and other molecules interact with each other. Hair is made of proteins, so if one of the structures is affected, the hair is too.

Let's analyse what happens in each level of structure:

  • In the case of the primary structure, which is the sequence of amino acids, the modification will give a non-functional protein that will not fold into the following structural level. So, there won't be new hair.
  • For the secondary structure, a modification here can lead to a different folding. In other words, it can change from an α helix to a β pleated sheet or the other way round. This will give a different shape to the hair, like curly or straight.
  • A modification in the tertiary structure modifies the interaction of the R groups in the protein, so the three-dimensional structure that this interaction gives will change, giving a different type of hair.
  • Lastly, if we modify the quaternary structure, the protein won't interact with some proteins, but it may interact with others.

In conclusion, the modification of the secondary structure changes the interaction between the elements of the protein giving hair with different shapes.

Learn more at:

brainly.com/question/1548720?referrer=searchResults

7 0
3 years ago
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