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klasskru [66]
2 years ago
6

Assume that a single layer of phospholipids coat the water in a beaker. which part of the phospholipid molecule will face the ai

r?
a.the phosphate groups
b.the hydrocarbon tails
c.the phospholipids would dissolve and not form a membrane coat
d.both heads and tails as the molecules are amphipathic and will lie sideways
Biology
2 answers:
kiruha [24]2 years ago
7 0

Answer: The correct answer is-

b.the hydrocarbon tails.

A phospholipid molecule comprises of a head group (that contains polar phosphate molecule) that is hydrophilic ( water attracting groups due to formation of hydrogen bonding or ionic bonds with water molecules) and two tails of fatty acid ( which are hydrophobic that is water repelling groups).

In this question, a single layer of phospholipid coats the water in a beaker. This means that head group of this layer is in contact of water ( present in the beaker) and the two fatty acid tails of hydrocarbon ( that are water repelling) are facing air.

Thus, option b) is the right answer.

jek_recluse [69]2 years ago
5 0
The part of the phospholipid molecule that will face the water, as it is labelled to be hydrophilic would be the polar phosphate group. The correct response would be A.
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Based on the question above, the best answer would be:

 

That the headless horseman had to hold his head in his arms is because he “wanted to see what’s ahead.”

 

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Explain what friction corollas and a low pressure gradient does to an air parcel?
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Answer with Explanation:

Coriolis Force - refers to the fictitious force that acts perpendicularly to the direction of a rotating motion.

Air parcel - refers to a body of air that is <em>"imaginary."</em>

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When an<em> air parcel is at rest, </em><u>the pressure gradient force acts upon it.</u> It will then move from<em> high pressure to low pressure.</em>

However, when the air parcel starts to be in motion, its direction will be changed with the help of the Coriolis force. Thus, it moves to the right side of the Northern hemisphere.

Once the speed of the wind increases, the change in direction of the air parcel increases. This happens until the pressure gradient force and the Coriolis Force are equal in magnitude. When this happens, the wind will start blowing parallel to the points of equal pressure. The wind will now then be referred to as in "geostrophic balance."

When friction happens, the geostrophic balance breaks. The flow of the wind will be slowed down. This means that the Coriolis force will also be lessened. The air parcel will then move towards the lower region.

6 0
2 years ago
Identify the interactions as positive, negative, or both.
Mice21 [21]

1. A mudslide wipes out the side of a thriving hill: This is negative as many trees and other organisms will get destroyed.

2. A volcano erupts, covering the nearby land with lava: This is negative as molten and extremely hot lava can cause serious damage to its surroundings.

3. A forest is rapidly growing new plant life: This is positive because new plants are being grown.

4. Humans remove wolves from a national park to protect surrounding homes: This is positive for humans because humans will be safe but it is negative for the eco system as removal of wolves can upset the eco system cycle.

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4 0
2 years ago
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olga_2 [115]

In order to improve the graph and make it more detailed in order to get a better perception why the honey bee populations are decreasing, there's few things that can be added.

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The number of the honey bee colonies is directly connected as to how many bee keepers there are. If there's a trend of a decline in the bee keepers, than there will be a trend in the decline of the honey bees.

- Area of trees suitable for the honey bees

The trees are crucial for the honey bees to be able to produce honey, thus it is very important that they have a certain area of trees on which they can feed upon. If there's a decline in the number of trees for the bees, than the bees will be dying from starvation.

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4 0
2 years ago
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Usimov [2.4K]

Answer:

The correct answer is - a, and b.

Explanation:

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The neurogenesis is the ability to the regeneration of the nervous system cell, it can occur in the adulthood as well however it takes approximately six week time.

Thus, the correct answer is - a, and b.

6 0
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