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sleet_krkn [62]
3 years ago
12

The brain coordinates the physical changes that occur during puberty and the ______ plays an especially important role in this p

rocess.
Biology
1 answer:
levacccp [35]3 years ago
4 0

Answer: Hypothalamus

The brain coordinates the physical changes that occur during puberty and the hypothalamus plays an especially important role in this process.

Explanation:

Since the hypothalamus controls the secretion of hormones from the pituitary gland, and the pituitary gland, also known as master gland, controls the activities of all other glands like the following:

- gonads (ovaries and testes), responsible for producing many of the sex hormones and hence, development of sexual characterictics

- thyroid, responsible for producing thyroxine, responsible for body metabolism and development.

Thus, hypothalamus plays important role in puberty

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The Calvin cycle uses ATP and NADPH from the light-dependent reaction to produce high-energy sugars.
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What is difference between nervous and chemical(endocrine) system???
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Endocrine system uses chemical signaling (hormones produced by glands) while the nervous system uses electrical signaling (neural impulses).

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The Tuskegee syphilis study raised serious concerns about ethical research because the researchers ________.
aivan3 [116]

Answer:

a) withheld information from test subjects about their condition

Explanation:

The Tuskegee syphilis study which was carried between 1932-1972 in the Macon County, Alabama on the African-Americans infected from syphilis.

The U.S. Public Health Service started the study promising the infected persons that they will receive the benefits from the studies like a healthy meal, proper antibiotic medication and other benefits.

But the U.S Public Health Service failed to provide the services mainly the medication in which antibiotic penicillin which could treat the disease was not provided to the patient. As a result of this, syphilis continued in their generations also and people and about 100 subjects died.

They were told that they had bad blood which cannot be treated and thus in 1972, this raised a question over this issue related to ethics as to why the penicillin was not provided as well why the person was kept away from the reality.

Thus, Option-A is the correct answer.

4 0
3 years ago
4.) Photosynthesis is often described as two series of reactions, the light dependent and the light-independent or Calvin cycle
Natasha2012 [34]

Answer:

photosynthesis is important in many helio-centered plants

Explanation:

3 0
3 years ago
How many grams of solute are needed to make 250 mL of a 2.055 M NaCl solution?
Veronika [31]

Answer:

30grams

Explanation:

To calculate the mass (number of grams of the solute) in the solution, we need to calculate the number of moles it contains first. We use the formula;

M = n÷ V

Where; M= Molarity or Molar concentration = 2.055M

n= number of moles= ?

V= Volume = 250mL

Volume in L is 250/1000 = 0.250L

n= M × V

n= 2.055 × 0.250

n= 0.51375moles

The mass is calculated using :

Mole (n) = mass (m) / molar mass (MM)

Molar mass of NaCl = 23 + 35.5

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Mass = 58.5 × 0.51375

Mass = 30.0543

Therefore, the mass is 30grams

7 0
3 years ago
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