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alexandr1967 [171]
3 years ago
15

What’s an example of lipids being waterproof?

Biology
2 answers:
Strike441 [17]3 years ago
8 0
Waxes to provide a waterproof coating on a surface. Because they are hydrophobic, they can form a coating that repels water.
Scilla [17]3 years ago
5 0
Examples of lipids include fat boils wags his hormones and steroids. Lipid or non-polar molecules so they are not soluble in polar like water.
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Imagine you are investigating the case of a young man who seems not to respond to stressful situations the same way most people
anzhelika [568]

Answer:

The answer of the human body to stress, and stressful situations, including to conditions that may trigger the stress response of the body, is a pretty complex one involving the nervous system as a whole, and the adrenal glands, which are responsible for producing two of the most important stress-related hormones. These hormones: glucocorticoids and corticoids (cortisol), will in turn affect all body systems in different manners to produce the necessary effects, to respond to the perceived "threat".

In essence, we have a pathway from our brains, to our adrenal glands, known as the hypothalamic-pituitary-adrenal (HPA) axis. In this axis, several genes that are geared towards stress responses activate (CRHR1 and CRHR2, among others) and produce CRH (Corticotropic releasing hormone), which in turn is directly related with stimulating the production of cortisol when there is stress. However, because our bodies are not meant to be in a constant state of alertness and preparation, because the different organs of the body are negatively affected, there are also pathways that will turn off this response and lower the stressful production of cortisol.

In this particular person, although he has been exposed to the same stressor as the others, he does not have precisely the same reactions to it as the others. It is important to note one thing here, and that is, that the stressor offered to these people were videos of stressful situations, and what is known about the stress response is that one vital part of it is visual exposure to different factors, including light, and images. These exposures cause the HPA axis to initiate a response through CRH production. However, it seems that in this young man, although most of the responses are present, not all of them are. So one solution could be that he has a mutation in his genes in his HPA axis, and therefore CRH is not being produced in enought levels to stimulate sufficient levels of cortisol production. However, there are also other genetical reasons why, and these could be many.

6 0
2 years ago
//ANSWER ASAP!//
fgiga [73]

Answer:

consistent warm weather

Explanation:

8 0
2 years ago
Suppose a human blood cell containing a 0.9 percent solute concentration were put into a container of 0 percent solute solution
Vladimir [108]

Answer and explanation:

If a human blood cell with a 0.9% solute concentration were to be put into a container of 0% solute solution, the cell would get BIGGER.

<u>The cell contains a </u><u>more concentrated solution</u><u> than the solution in the container</u>. The difference in concentration would produce an <em>osmotic gradient</em> that would cause water from the container to get inside the cell to even the concentrations - this is going to make the cell much bigger because the entering water would bloat the cell.

In this example, the solution in the container is hypotonic in relation to the cell, while the solution inside the cell is hypertonic in relation to the solution in the container. This is why the water will be moving from outside of the cell to the inside of the cell.

6 0
2 years ago
If an enzyme in solution is saturated with substrate, the most effective way to obtain a faster yield of products is to:a. add m
Simora [160]

Answer:

a. add more of the enzyme

Explanation:

Enzymes have specific sites to which their substrates bind during the reaction. These sites are called active sites. When all the active sites of all the enzyme molecules present in a solution are bound to the substrate molecules, the enzyme is said to be saturated with the substrate. Under these conditions, more enzyme molecules are to be added to the solution to increase the reaction rate and to obtain the product at a fast rate. The addition of more enzymes will allow more substrate molecules to occupy the active sites and to be converted into the product/s.

4 0
3 years ago
18. Brayden is trying to figure out how petal shape is determined in two different roses. In the pink
vovikov84 [41]

Answer:

c

Explanation:

I guessed not sure

7 0
2 years ago
Read 2 more answers
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