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djverab [1.8K]
3 years ago
6

Why is water called a universal solvent?

Biology
2 answers:
marishachu [46]3 years ago
7 0

Water dissolves a many different substances, which is why it is such a good solvent.

ioda3 years ago
5 0
It is called a universal solvent because it dissolves more substances than any other liquid. It can dissolve a huge variety of substances.
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A scientist observes a population of single-celled organisms at various temperatures. At extreme high temperatures and extreme l
Mila [183]

A change in temperature affects an enzyme by causing the enzyme to change it's shape.

<h3>what is an enzyme?</h3>

An enzyme is a substance that catalyzes chemical reactions.

  • Temperature is one of the major factors that aid enzymes action.

  • Increase in temperature could increase the rate of enzyme.

  • However, at a very high temperatures, the enzyme can be denatured thereby changing it shape or structure and the enzyme may no longer bind to the substrate or function effectively this will then reduce the rate of chemical reaction.

Therefore, a change in temperature i.e very high temperature can change the shape of an enzyme.

for more details kindly on change in temperature kindly check brainly.com/question/6232699

8 0
3 years ago
Which major contribution did Carolus Linnaeus to scientific study?
Marat540 [252]

I am pretty sure that the answer is B.

7 0
4 years ago
Read 2 more answers
Which model of replication did the actual results of the Meselson-Stahl experiment support? Explain your answer.
AfilCa [17]

Answer:

Semi-conservative replication

Explanation:

After the double-helix discovery of Watson and Crick, there were three possible models about the DNI replication:

  • The Conservative model stated that the two strands of DNI together were the template of another new molecule. The final product was the original double-stranded molecule and the new molecule.
  • The semi-conservative model stated that the original DNI molecule separated into two strands, and each of them served as a template for the synthesis of a new complementary strand. The replication product would be two double-stranded DNA molecules, each carrying an original strand a new one.
  • The Dispersive moles stated that the replication product would be two molecules made by a mixture of segments of the original and the new molecules.

Meselson and Stahl joined to discover which of the models was the correct one. To do it they used E. coli and Nitrogen isotopes.

  • First, they extracted DNI from bacteria grown in a medium with N¹⁴ and got its density band by centrifugation.
  • Then they grew bacteria in a medium with N¹⁵, extracted their DNI molecules, centrifugated them, and got the density band, which was heavier than the firsts ones.
  • The researchers then transferred bacteria grown in medium with N¹⁵  to a medium with N¹⁴, and they allowed only one replication process to occur. DNI was extracted and centrifugated again, and a new band appeared. This band was an intermediate form between bands of DNI-N¹⁵ and DNI-N¹⁴.

This event <em>eliminated the conservative model</em>. If this model were correct, the expected result would be to get two bands: one corresponding to the density DNI-N¹⁵ and the other corresponding to the density DNI-N¹⁴.

  • Bacteria grown in a medium with N¹⁵ and then transferred to a medium with N¹⁴ were finally allowed to replicate twice. Their DNI was extracted and centrifugated. The result was two bands: one of them coincided with the intermediate band, and the other one with the DNI-N¹⁴.

<u>This result was conclusive</u> because if the dispersal model were correct, these two bands should not appear, as all the DNI strands would have part of the original molecule.

With this experiment, Meselson and Stahl proved that the correct replication model was the semi-conservative one.

5 0
3 years ago
What is an ion?
Mariulka [41]

Answer:

The answer is B

(also, this is chemistry not biology)

8 0
3 years ago
The frequency of a certain trait in a population of beetles will increase over time if -
Llana [10]

Answer:

eeee 2564 weee               za kss  kid

Explanation:

<ZJQBqzdbhbakzn

7 0
3 years ago
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