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Daniel [21]
2 years ago
10

What is a functionally specialized region of a cell membrane, typically characterized by the presence of specific proteins, call

ed?
Biology
1 answer:
solniwko [45]2 years ago
7 0

Answer: Membrane domain

Explanation:

Membrane domains are regions of the plasma membrane that have a specific functional specialization. They arise from movement restriction of the components of the membrane.  If we examine the detail of the structure of many transmembrane proteins, we see that they often possess three different domains, two hydrophilic and one hydrophobic.

  • Hydrophilic domain (formed by hydrophilic amino acids) at the N-terminal end projects to the external medium. The hydrophobic domain in the middle of the peptide chain (often only about 20-30 amino acids) is across the plasma membrane and a hydrophilic domain at the C-terminal end protrudes into the cytoplasm.

  • The transmembrane domain, because its amino acids have hydrophobic side chains, is "comfortable" in the hydrophobic layer of the plasma membrane.

<u>Since these transmembrane domains "anchor" the protein to the lipid bilayer, these proteins do not float freely and cannot be isolated without first dissolving the lipid bilayer with detergents. </u>

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3 years ago
Research indicates that as levels of happiness increase, cortisol levels appear to increase as well. Please select the best answ
iogann1982 [59]

Cortisol hormones are stress hormones that increase blood glucose levels. When the level of happiness increases the level of cortisol does not increase.

<h3>What are cortisol and its function?</h3>

Cortisol is the steroidal hormone that is produced in the cortex of the adrenal glands and is discharged in the blood vessels when in stress or danger.

It has a variety of functions including regulation of the blood pressure, response to the stressful condition and increase of the metabolism of the body.

It also acts as happiness hormones along with adrenaline and oxytocin but is a major flight or fight hormone and increases the heart rate in dangerous conditions.

Therefore, the statement is false.

Learn more about cortisol here:

brainly.com/question/26291522

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Ivahew [28]
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3 years ago
A white mass is cross with a black mouse all the offspring were gray the jeans for the for color in mice show what
Yanka [14]
R u using a punnet square?

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What do u mean by osteoporosis ?? ​
N76 [4]

Answer:

<h3><em><u>The word 'osteoporosis' means 'porous bone. ' It is a disease that weakens bones, and if you have it, you are at a greater risk for sudden and unexpected bone fractures. Osteoporosis means that you have less bone mass and strength</u></em></h3>

Explanation:

<h3>Aww thanks</h3>
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2 years ago
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