A scientist uses materials in her lab to cut a DNA sample into fragments.

2 answers:

5 0

The scientist is using gel electrophoresis. Gel electrophoresis is a process used to cut DNA into fragments in order to see them.

weqwewe [10]3 years ago

4 0

Answer:use of restriction enzymes

Explanation: C. Use of restriction enzymes

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An atom of element A has 108 protons. What would the elements atomic number be?

marusya05 [52]

108 is the atomic number

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What is the first step for response to an emergency situation?

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Back away from the situation and tell the supervisor/teacher

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Use Lewis theory to determine the chemical formula for the compound formed between Sr and N.

mariarad [96]

Answer:

$Sr_3N_2$

Explanation:

Hello,

In this case, since the Lewis theory is based on the bonds formation between atoms via the valence electrons, we can verify the chemical formula of the compound formed by strontium and nitrogen by noticing that strontium has two valence electrons as it is in group IIA, for that reason, two nitrogens should be available for bonding. Therefore, since nitrogen is in group VA, it is said that three electrons are required to attain the octet (maximum amount bonded electrons), for that reason, three strontiums are should be available for bonding. In such a way, the formula should be:

$Sr_3N_2$

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3 years ago

When explaining about structural classifications to a group of students, the instructor discusses the peptides and proteins. The

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Answer:

There are approximately 200 amino acids.

Explanation:

Proteins are usually larger than peptides. In addition, proteins contains amino acids which are about 50 and more than while the amino acids in peptides are just between 2 and 50. On the other hand, growth hormone which is also known as somatotropin is a type of peptide cell regeneration, growth, and reproduction. The number of amino acids in the growth hormones are approximately 200.

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A. Only a small amount (less than 0.01%) of the enol form of diethyl malonate is present at equilibrium. Write a structural form

Karo-lina-s [1.5K]

Answer:

Please see attachment

Explanation:

Please see attachment

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3 years ago