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Blababa [14]
3 years ago
12

Which Enzyme has an optimal pH that is Acidic?

Biology
2 answers:
Vladimir79 [104]3 years ago
5 0

Answer:

a. pepsin

Explanation:

it has a 1 to 2 level which is acidic because anything lower than 7 is acidic

elena-s [515]3 years ago
5 0

Answer:

A. Pepsin

Explanation:

The enzyme pepsin breaks down proteins in the acidic conditions of the stomach. Pepsin has an optimum of pH 2.5 and a working range of between pH 1-4.

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A restriction enzyme has a 4 bp recognition sequence. Assuming equal frequency of all four bases in a 5,000 bp linear section of
I am Lyosha [343]

Answer: 20 fragments

Explanation:

This particular restriction enzyme has a 4 bp (base pair) recognition sequence therefore it will cleave once every 4ⁿ bases where n indicates the number pf bases in the recognition sequence.

  • The recognition sequence is 4 bp therefore this restriction enzyme cleaves once every 4⁴ = 256 bases. This is the length of the restriction fragment.
  • Calculate the number of fragments by dividing the total number of bases ( where you assume equal frequency of bases ie. A+T = C+G) by the length of the restriction base.
  • therefore 5000bp/256bp = <u>19,53</u> now this number ca n be rounded up to 20.
  • The expected number of fragments on the electrophoresis gel will be 20 fragments.

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4 years ago
What field(s) are created by an electron when it moves?
mario62 [17]
I think the correct answer from the choices listed above is option C. The fields that are created by an electron when it moves are gravitational, electric, and magnetic fields. All fields are being produced by such movement. Hope this answers the question.
3 0
4 years ago
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Which scientist disproved the idea of spontaneous generation by formulating and testing the hypothesis that only flies can make
devlian [24]
The correct answer is C, Francesco Redi, who in 1668 demonstrated that life originates from life and there is not the spontaneous generation of life from non-living things like meat. It was the first real experiment which disproved the theory of spontaneous generation. 
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3 years ago
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This is the act of trying to find the answer to an unknown question by the use of experimentation and research.
Vikentia [17]

Answer:

Question Answer

Inquiry This is the act of trying to find the answer to an unknown question by the use of experimentation and research.

Investigation This is the process of researching or studying a concept. Examination, inquiry

Explanation:

7 0
3 years ago
Fossils of the Dorudon, an aquatic mammal that lived over 40 million years ago, show a whale-like animal that had small underdev
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