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Murljashka [212]
4 years ago
6

A scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bon

ds. Which level of structural arrangement is s/he looking at
Biology
2 answers:
marin [14]4 years ago
3 0
If a scientist observes an enzyme polypeptide chain arranged in spiral turns that rise upward and are held in place by hydrogen bonds he/she is looking at a tertiary structural arrangement. 
11111nata11111 [884]4 years ago
3 0

Answer:

The correct answer will be -tertiary structure

Explanation:

Proteins are one of the important bio-molecules which perform various roles depending on their structures.  Proteins form four structures: primary (linear), secondary (folded), tertiary (highly folded) and the Quaternary structures.

The structure of the protein which can be marked by the spiral turns which are held together by hydrogen bonds formed between the C=O and N-H groups stabilize the compounds is known as the tertiary structure. This structure also contains other covalent bonds like  C=O and N-H groups phobic interactions.

Thus, the tertiary structure is the correct answer.

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An organ or tissue that is considerably colder than 98.6°f is better able to resist damage from hypoperfusion because:
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An organ or tissue that is considerably colder than 98.6°F is better able to resist damage from hypoperfusion because: A) the body's metabolic rate is slower. The amount of blood returned to the heart is called: A) preload.
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An insecticide is a chemical that can rid a plant of insects that cause damage to the plant. If the same insecticide is used for
Karo-lina-s [1.5K]
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Scientists once believed that modern-day reptiles were the only living descendants of dinosaurs, which were reptiles. Accumulati
Mrrafil [7]

This is the complete question

Scientists once believed that modern-day reptiles were the only living descendants of dinosaurs, which were reptiles. Accumulating fossil evidence has now suggested that the most recent dinosaurs gave rise to birds, making birds one of the closest living relatives of dinosaurs.

What statement provides the strongest evidence to support the claim that birds evolved from dinosaurs?

A. A fossilized rib cage of the semi-aquatic dinosaur Spinosaurus shows that it had lungs.

B. Fossils of the beaked dinosaur Ankylosaurus show that it had modified scales that produced hard, bony plates.

(C. Fossils of the winged dinosaur Archaeopteryx show that it had modified scales that produced feathers.) c is the right answer

D. A fossilized nest of the herbivorous dinosaur Brachiosaurus shows that it laid external eggs.

The correct answer is option C, that is, fossils of the winged dinosaur Archaeopteryx show that it had modified scales that produced feathers.  

<h3>What is Archaeopteryx?</h3>

Archaeopteryx is considered an intermediate fossil between the dinosaurs and modern birds.

With its amalgamation of reptilian and avian characteristics, it was long considered as the earliest known bird. It was found in 1860 in Germany, it is sometimes also called Urvogel, that is, the German term for a first bird or original bird.  

Thus, The correct answer is option C.

To learn more about Archaeopteryx click here:

brainly.com/question/17059171

#SPJ1

5 0
2 years ago
QUESTION:
maria [59]

Answer: Hypertonic Solution

Explanation:

Hypertonic refers to a solution with higher osmotic pressure than another solution. In other words, a hypertonic solution is one in which there is a greater concentration or number of solute particles outside a membrane than there are inside it.

so, from the diagram shown:

In the solution, the cell shriveled. This means the cell was placed in a solution containing a comparatively lower water and higher solute concentration. Water moved from inside the cell to out of it, causing the cell to shrivel.

The diagram represent a membrane in hypertonic solution

Read more about Cell at:

brainly.com/question/3717876

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