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Reil [10]
3 years ago
7

In the alveolus pictured above, a disease or

Biology
1 answer:
Inessa [10]3 years ago
4 0
<h2><u>Full Question:</u></h2>

In the alveolus pictured above, a disease or injury to which structures would reduce the ability of oxygen to diffuse from the alveolar space to the capillary?

A. A and B

B. B and C

C. B and D

D. A and D

<h2><u>Answer:</u></h2>

The correct answer is option D.

<h3><u>Explanation:</u></h3>

Alveoli is defined as the unicellular thickened sac like structure of lungs which helps in exchange of gases in lungs. The exchange membrane of lungs comprise of three structures -

A. The epithelium cells of Alveoli,

B. The basement membrane of alveolar epithelium,

C. The endothelial layer of blood capillary.

The red blood cells described here won't cause any problems to the diffusion of gases from alveolar cavity to blood. The structures mentioned here as the type 2 cells of Alveoli which secrete lecithin, a surfactant which releases the surface tension of Alveoli. This compound prevents the Alveoli from collapsing and helps in diffusion of gases. The other structure mentioned here as D are the alveolar epithelium which is the unicellular thickened membrane of Alveoli, helping in gaseous exchange.

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Which have scientists learned from studying seismic waves that travel through earth’s interior?
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<span><span>D. They have learned the precise depths where the boundaries between the earth's layers are located.</span>

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3 years ago
When restraining a horse for a routine veterinary procedure, it's appropriate for the veterinary assistant to?
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When restraining a horse for a routine veterinary procedure, it's appropriate for the veterinary assistant to Hold the horse's lead rope.

Holding the horse's lead rope is necessary, when restraining a horse for a routine veterinary procedure by the veterinary assistant.

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Lead the left shoulder of the horse with the assistant's right hand with the excess of rope in the left hand of the assistant to avoid serious injury when the horse decides to bolt.

It becomes important to stable the horse by calming the horse before the routine veterinary procedure.

A leather band should be used in the rope by being tightened behind the legs of the front and by further fastening.

Remember not to harm the back of the horse by excessive fastening.

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5 0
2 years ago
Living cells cannot use heat to provide the activation energy for biochemical reactions because ________. Which choice(s) comple
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Considering the following;

I. Heat is not readily available to all living cells.

II. Heat at excessive amounts denatures proteins.

III. Heat does not provide the activation energy for their reactions.

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I and IV

Explanation;

Living cells cannot use heat to provide the activation energy for biochemical reactions because heat is not readily available to all living cells and also when a critical temperature is reached, proteins no longer function.

Too much heat can kill an organism by rendering its organelles, cells, tissues and organs permanently inoperable and un-salvageable. The same process can be observed in tissues at low temperatures, and is the cause of frostbite. This is because enzymes are denatured by high temperature and inactivated by low.

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which technology do environmental scientists use to track vulnerable populations of animals fitted with an electronic collar?
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