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Artemon [7]
3 years ago
7

You have conducted an Ames test on a given compound. Which of the following would be classified as a positive result on the Ames

test?
(A) His+ strain grows on an his- plate.
(B) His- strain grows on an his+ plate.
(C) His+ strain grows on either an his- or an his+ plate.
(D) His- strain grows on an his- plate.
(E) His+ strain grows on an his+ plate
Biology
2 answers:
Step2247 [10]3 years ago
8 0

Answer:

The correct answer is option (D) "His- strain grows on an his- plate".

Explanation:

The Ames test is a procedure that allows to detect if a given compound can cause mutations on a tested organism by growing strains of bacteria that require histidine (His-) to growth, since they are not able to produce its own histidine. In the Ames test, the bacteria is exposed to a given compound and is grown in a medium with small amount of histidine (his- plate). If the His- strain grows on a his- plate, it means that the bacteria has mutated to synthesize its own histidine and it is considered as a positive result on a the Ames test.

g100num [7]3 years ago
8 0

Answer:

(D) His- strain grows on an his- plate.

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Answer:

Nucleus

Explanation:

The nucleus contains the DNA and RNA of the cell. It is the nucleus that carries the biological information for the person.

Hope this helps!

6 0
3 years ago
HELP!!! choose one of the following types of biotechnology: genetic engineering, cloning, or artificial selection. You will then
Darina [25.2K]

Answer:

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5 0
3 years ago
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Answer:

1: Chemical Energy

2: Kinetic Energy

3: Electrical Energy

4: Mechanical Energy

Explanation:

1: The energy held in food is called <em>chemical energy. </em>It is a form of <u>potential energy</u> held within chemical bonds between atoms.

2: When flowing water is captured and turned into electricity, it is called hydroelectric power or hydropower. There are several types of hydroelectric facilities; they are all powered by the <em>kinetic energy of flowing water</em> <u>as it moves downstream.</u>

3: The power for lights and stuff is <em>Electrical</em><em> </em><em>Energy</em><em>,</em> ofc :]

4: The <u>chemical energy in the food</u> gets changed into the <em>mechanical energy</em> of <u>moving muscles.</u>

<u>Hope</u><u> </u><u>this</u><u> </u><u>helps</u><u>!</u><u>!</u><u> </u><u>:</u><u>D</u>

5 0
2 years ago
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zmey [24]
<span>A hypotonic solution is one in which there is more water per particle of solute compared to the cell. So the water will rush into the cell and it will become turgid. A hypertonic solution has many particulates of solute, more than the cell. So water will rush out of the cell and the cell is said to be flaccid.</span>
3 0
2 years ago
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ruslelena [56]

Answer:

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Explanation:

4 0
3 years ago
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