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brilliants [131]
2 years ago
11

Which of these is true of every ecosystem on Earth?

Biology
1 answer:
Afina-wow [57]2 years ago
3 0

Answer:

D. Every ecosystem has a set of species that are found there naturally.

Explanation:

This is the answer! Each ecosystem is unique in so many different ways. Ecosystems can't be the same. Instead, each ecosystem has a unique set of creatures that make the food chain and life cycle work!

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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
3 years ago
Which of the following is the first principle of cell theory?
Oksanka [162]
The first part states that all organisms are made of cells.
4 0
3 years ago
Some datails about the skunk.
DochEvi [55]
It is black and white. Skunks are about the same size of house cats. It is found only in North America. It eats both plants and meat (omnivore) To protect itself it will spray a nasty yellow fluid that stinks really bad.
4 0
3 years ago
Through which vascular tissue does water and nutrients get transported to reach the leaves during transpiration?
JulijaS [17]
C.Xylem
Xylem is where the nutrients and water gets transported upward
4 0
3 years ago
Read 2 more answers
Including the conversion of pyruvate to acetyl coA, how many NADH, FADH2, ATP, and GTP molecules are produced during the kreb’s
Mnenie [13.5K]

Similar to the conversion of pyruvate to acetyl-CoA, each pyruvate molecule loses a carbon atom with the release of carbon dioxide. During the decomposition of pyruvate, electrons move to NAD + to produce NADH. It is used by cells to produce ATP.

  • NADH: Three molecules are produced in the Kleb circuit

  • FADH2: One molecule is produced in the Kleb circuit

  • ATP or GTP: From each molecule of pyruvate during the conversion of succinyl-CoA to succinic acid Two molecules of ATP are produced. The presence of the enzyme succinyl-CoA synthetase.

Learn more about conversion of pyruvate here:brainly.com/question/4198225

#SPJ4

8 0
2 years ago
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