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2 years ago

Please help IT WOULD MEAN THE ENTIRE WORLD!!!

Biology

1 answer:

Basile [38]2 years ago

8 0

Answer:

-if I'm not wrong the technique is used to produce the bacteria cell is DNA cloning because after a ligation, the next step is to transfer the DNA into bacteria in a process called transformation.

-The organic compounds scientist used to cut DNA is enzymes.

-the possible result would be the transformations made and selection of the bacteria.

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What is the name given to the portions of eukaryotic mRNA sequence that are removed during RNA processing?

ValentinkaMS [17]

The name given to this portion is INTRON. Intron is a portion of the split gene that is found in pre-RNA transcript which is usually removed for degradation during RNA processing. An intron is a non-coding, intervening portion within the primary transcript and is not needed for genetic coding.

5 0

3 years ago

Comparing amino acid sequences in proteins has been used to determine the relatedness of organisms. Below is a graphic that show

Tju [1.3M]

Answer:

A) Species A and E are more closely related than either species are related to species D.

B) Between A and B = 99.1%

Between species A and C =97.5%

Between species B and C = 97.3%

Similarity in amino acids sequence reflects similarity in DNA sequence

C) Species A and E are most closely related

D) Species A and E have the most similarity in amino acid sequence, and hence DNA sequence.

Explanation:

A) The amino acid sequences of the protein, keratin, in species A and D has a difference of about 19 whereas species A and E have a difference of only 1. Therefore, it means that keratin in species A and D will have differences in structure whereas between species A and E, they would have almost the same structure.

Also, species D and E have a difference of 20 in their amino acids sequence, therefore, the structure of keratin in both species will have differences in structure.

B) Similarity between A and B:

450 - 4 = 446

In percentage: 446/450 × 100% = 99.1%

Similarity between A and C:

450 - 11 = 439

In percentage: 439/450 × 100% = 97.5%

Similarity between B and C:

450 -12 = 438

In percentage: 438/450 × 100% = 97.3%

The sequence of DNA of species determines their amino acid sequences because information in DNA is transcribed to RNA which are then used to make proteins. Therefore, if a species are very closely related, they are expected to have very similar genetic sequences and thus proteins too. This is reflected in similarity between amino acid sequences in their proteins.

C). Species A and E are most closely related.

D) Species A and E have only a single difference in their amino acids sequence for Keratin. This translates to about 99.7% similarity which is the highest among all the species compared. Therefore, species A and E are most closely related.

7 0

2 years ago

Why is the action of phagocytes considered a nonspecific response?

mariarad [96]

The answer is D.) <span>It is a response to any type of harmful substance.</span>

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2 years ago

Read 2 more answers

Natural resources a. are inputs provided by nature. b. include land, rivers, and mineral deposits. c. take two forms: renewable

elena55 [62]

Answer: d. All of the above are correct.

Explanation: Natural resources are resources provided by nature. They occur in nature without manmade interference. Natural resources include mineral deposits, land water bodies and the atmosphere. These resources are utilized by man for economic, social and educational purposes. Natural resources can be renewable or nonrenewable resources such as water are renewed by rainfall. Heavy manmade activities such as industrialization, war or natural disasters can deplete these resources.

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2 years ago

DanielleElmas [232]

Cellulose is another long polymer of glucose. Plant cells make their cell walls out of cellulose. In fact, 100 billion tons of cellulose is made every year on earth. Cellulose is indigestible in most animals, including us. Ever eat a cardboard box? You get the picture. We simply lack cellulase, the enzyme that can break it down. Some bacteria, some single-celled protists, and fungi have the enzyme. Animals that feed on cellulose harbor these microbes that help them digest it. Even though, we cannot break down this molecule, we do need cellulose in our diet. We call it “fiber”. Cellulose stimulates the colon to produce regular bowel movements and helps make the stools large and soft. A diet rich in fiber can prevent a painful intestinal disorder called diverticulosis. Hard impacted stools can sometimes cause the walls of the colon to form blind outpockets called diverticula which can periodically inflame. So what makes cellulose different from starch? Isn’t it made of glucose? Well it is but the glucose monomers are organized in an interesting fashion. The orientation of the glucose molecules alternates. So if the first one is right side up, the next one is upside down and then the next is right side up and the next one is upside down. Apparently this is a tricky arrangement for an enzyme to break.

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3 years ago