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bija089 [108]
2 years ago
15

Pls help will mark brainliest

Biology
1 answer:
Readme [11.4K]2 years ago
3 0

Answer:

do it as biggest to smallest, cells from the start and the balls towards the end.

Explanation:

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Amino acids are (relatively) small molecules with a similar chemical structure. All of them have 2 carbon atoms connected to a n
Rainbow [258]

Answer:

The correct answer is 20...

Explanation:

The name of these 20 common amino acids is as follows: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalaine, proline, serine, threonine, tryptophan, tyrosine, and valine. Alanine.

Although their is 20 altogether their is only 9 main essential ones:

The 9 essential amino acids are leucine, iso-leucine, valine (all BCAAs), lysine, histidine, phenylalanine, methionine, threonine, and tryptophan. Essentials amino acids are important because they serve as the "building blocks" for muscle protein. They are also are what makes a protein a "complete" protein.

6 0
2 years ago
Read 2 more answers
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
One solution that scientists have proposed to fix deforestation and forest fires in temperate deciduous forests?
xenn [34]

Answer:

You can help protect and restore the temperate forest by purchasing paper and wood products that are FSC certified for your home and business. These are products that have come from sustainably managed forests, where trees are replanted and not clear cut.

Explanation:

6 0
3 years ago
b cells are white blood cells that work by ___________________, whereas t cells attacks foreign invaders __________________.
Sloan [31]

Answer:

your answer is b cells are white blood cells that work by producing antibodies, whereas t cells attack foreign invaders directly.

Explanation:

flashcards

6 0
2 years ago
If the diameter of the afferent arterioles leading to the glomerulus increases (vasodilation) net filtration pressure will incre
Vinvika [58]

True. If the diameter of the afferent arterioles leading to the glomerulus increases due to vasodilation, which ultimately increases the net filtration pressure.

The filtration of blood occurs in the kidney, an excretory organ. The kidney is composed of numerous small units called nephrons, which is responsible for the blood filtration.

Glomerulus is part of nephron and the glomerular filtration occurs in the renal corpuscle of the kidney. This process is driven by hydrostatic and colloid osmotic pressure.

These pressures are collectively called net filtration pressure, which is influenced by the diameter of afferent arterioles.

If the arterioles constricts, net filtration pressure will decrease and if arterioles dilates, net filtration pressure will increase. This mechanism is regulated by neural, renal and hormonal regulation.

Learn more about Glomerulus on

brainly.com/question/13064727

#SPJ4

6 0
1 year ago
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