1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arisa [49]
3 years ago
12

Imagine you are investigating the case of a young man who seems not to respond to stressful situations the same way most people

do. In research studies, most people respond to videos depicting frightening situations with several measurable changes in their physiology. Each of these changes in physiology results from a change in the level of expression of one of our genes. Cortisol, our primary stress hormone, causes these changes in expression in all the relevant genes. While this particular young man has almost the same reaction as everyone else does to the videos, there is one particular aspect of the physiological response he does not exhibit. Please describe a gene mutation that could be responsible for this young man’s condition. g
Biology
1 answer:
anzhelika [568]3 years ago
6 0

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.

You might be interested in
How do the functions of the skeletal and muscular system differ? A. Muscles provide structure and support to the body, while bon
Yuki888 [10]

Answer:

B. Bones provide structure and support to the body, while muscles move the bones.

Explanation:

Let's try to eliminate choices.

A: "Muscles provide structure and support to the body, while bones move the muscles."

Muscles actually aren't the ones that provide support for our body; it's the bones and our skeletons that do that. So, this is wrong.

B: "Bones provide structure and support to the body, while muscles move the bones."

Bones do, in fact, provide structure to our bodies, and muscles are the ones that attach to the bones through tendons and help move them. So, B is correct.

C: "Bones send signals to the body, and muscles are responsible for movement."

While it's true that muscles are responsible for movement, bones do not send signals to the body; that's the nervous system's job. C is wrong.

D: "Muscles send signals to the body, and bones are responsible for movement."

Again, muscles don't send signals; neurons do. D is wrong.

The answer is B.

4 0
3 years ago
Archaea differ from bacteria in that archaea
Veronika [31]
Archaea<span> have more complex RNA polymerases than </span>Bacteria<span>, similar to Eucarya. Unlike </span>bacteria<span>, </span>archaea<span> cell walls do not contain peptidoglycan. </span>Archaea<span> have </span>different<span> membrane lipid bonding from </span>bacteria<span> and eukarya. There are genetic </span>differences<span>.</span>
5 0
3 years ago
Plzz help!!!
Tom [10]
A , a different form of DNA containing
8 0
3 years ago
Read 2 more answers
Complementary DNA? please help​
topjm [15]

Answer: From top to bottom- T, C, G, A, T, A, T

Explanation:

These are the nitrogenous bases that make up a part of nucleotides in DNA.

There are 4 bases in DNA:

- Adenine

- Guanine

- Thymine

- Cytosine

The bases pair together from A to T and G to C, the way I remember is just reading it as AT GC and it works for me, but you make want to make an acronym if it helps you remember better.

As a result, all you have to do is type in the corresponding base to form the correct base pairs.

3 0
2 years ago
Miguel's doctor has recommended that he consume less saturated fat. at his favorite fast-food restaurant, miguel chooses a grill
salantis [7]
Each gram of saturated fat give 9 calories. If Miguel's choice of the menu contained 6 gram of saturated fat,he choice contained 6g*9cal/g=54cal.
Miguel's choice had a total of 460 calories. 54 calories of saturated fat is equivalent to (54cal*100%)/460cal=11.74%.
The percentage of calories from saturated fat is 11.74.
4 0
3 years ago
Other questions:
  • What role do electron carrier molecules play in photosynthesis?
    14·1 answer
  • Which is a function of the plant cell wall?
    9·2 answers
  • What is the best natural defense against erosion?
    7·2 answers
  • When active transport is moving molecules, it will allow molecules to move from?
    6·1 answer
  • What primarily determines airway resistance in the respiratory passageways?
    8·1 answer
  • Please Help need this soon.
    7·1 answer
  • Question 4 of 10
    11·2 answers
  • 'gen a. Which statement describes objects such as stars that are moving toward an observer? They display a red shift. b. They di
    8·1 answer
  • In addition to carcinoma of the prostate, elevated prostate-specific antigen (PSA) can occur due to:
    5·1 answer
  • Evaluation of the pelvis in the rapid trauma assessment includes pressing on the symphysis pubis in which direction?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!