Other scientists hypothesize that organic compounds could have come to Earth_____.

1 answer:

ioda4 years ago

8 0

Other scientists hypothesize that organic compounds could have come to Earth when the stars collided and the debris fell to Earth. B

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1.5 (b) proteins quiz A useful model for enzyme action is the: the lock and key model. double helix model. ball and socket model

Goryan [66]

Answer:

A useful model for enzyme action is the Lock and Key model.

Explanation:

The Lock and Key model or theory was first postulated by Emil Fischer in 1894. It is used to represent the enzyme and its specific substrate. The enzyme (lock) is specifically activated by the substrate (key) through its active site (key hole) to produce a catalyzed reaction. If the keys are too small or too big for the key hole, it will not produce any reaction.

The Double Helix model by Watson and Crick is used to represent the DNA present in an individual. This is made up of two strands of DNA bounded by hydrogen bonds. In between these bonds are nitrogenous bases adenine (A), guanine (G), thymine (T), and cytosine (C).

The Ball and Socket model represents body joints, specifically the hip and the shoulder joints. The shape of the head of the joint is spherical and fits into a cup-like depression of the receiving bone. The range of motion of this joint is usually wide and has one central point.

The Amino Acid Chain model, also known as polypeptides, are linked together by a peptide bond. A peptide bond is produced by hydrolysis. The chain usually starts with the amino group and ends with the carboxyl group.

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3 years ago

how does Subduction Sea Floor Spreading Theory of Continental Drift (Plate Tectonics) Formation of Mountains/Volcanoes/Trenches

gogolik [260]

For sure, one of the answers is Plate tectonics. The second answer would most likely be subduction, due to the fact, in the lessons revolving this question, it mentions both earthquakes and volcanoes caused by subduction.

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3 years ago

What is the name of the clusters of lymphatic nodules located in the lining of the small intestine?

Otrada [13]

Answer:

The clusters of lymphatic nodules present in the inner lining of ileum is known as PEYER'S PATCH.

Explanation:

The lowest most part of the small intestine is known as ileum. In this part of intestine lymph nodules are present. Lymph nodules are small patch of lymphoid tissue inside the inner lining of respiratory system and urinary system.

These are named on the name of anotomist Hans Conrad Peyer. It is oval/round in shape and present inner lining of intestine.

They play a prominent role in immunologic responses. Like other lymph organs contain B and T lymphocytes.

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3 years ago

In mantle convection currents, hotter rock moves _______, while cooler rock moves _______. A. downward; sideways B. downward; up

lara31 [8.8K]

C. Upward; downward. As the hot rock rises, cooler rock flows downward to take its place next to the core, where it is heated and becomes buoyant enough to rise again later

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3 years ago

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What is the name of this tree?

Romashka-Z-Leto [24]

Answer:

redwood

Explanation:

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