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neonofarm [45]
3 years ago
10

What is the role of keratin in the skin?

Biology
1 answer:
loris [4]3 years ago
4 0

Explanation:

Keratin are important for the structural integrity, cell function and the movement and the proliferation of the cell and healing of the wound.  Different tissues in the body contains different combinations of the keratin proteins which play specialized roles.

Keratin has two major function in the skin -

  • <u>To hold the cells present in the skin together and form a barrier</u>
  • <u>It means the outermost layer of the skin which protects it from environment. </u>
  • <u>It also prevents the tearing of the skin.</u>
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How can the hypothalamus receive signals from both the nervous and endocrine systems?​
levacccp [35]

Answer:

it is tye master of the master gland bro

5 0
3 years ago
Lesson 01.04 Properties of Water
ryzh [129]

Answer:

1= In living organisms cells are composed of water or we can say that water is one of the important constituent of cells.

2= Hydrogen bonding import man properties to the water such as cohesion, high heat of vaporization, high heat capacity etc.

3= Because of high polarity, all polar substance get dissolve and make it universal solvent.

Explanation:

Solvent is the that part of solution which is present in large proportion and have ability to dissolve the solute. In simplest form it is something in which other substance get dissolve. The most widely used solvent is water, other examples are toluene, acetone, ethanol, chloroform etc.

Water is called universal solvent because of high polarity all polar substance are dissolve in it. Hydrogen is less electronegative while oxygen is more electronegative and because of difference in electronegativity hydrogen carry the partial positive charge while oxygen carry partial negative charge.

Hydrogen bond:

The hydrogen bond is the attraction between the toms which already take part in the other chemical bons. The one atom is hydrogen while other may be oxygen, nitrogen or fluorine.

The hydrogen bonding in water import man y properties in it such cohesion, high heat of vaporization, high heat capacity etc. The hydrogen bond hold the water molecules together.

Water create electrostatic interaction with other polar molecules. The negative end of water attract the positive end of polar molecules and positive end of water attract negative end of polar substance and in this way polar substance get dissolve in it.

Example:

when we stir the sodium chloride into water the cation Na⁺ ions are surrounded by the negative end of water i.e oxygen and anion Cl⁻ is surrounded by the positive end of water i.e hydrogen and in this way all salt is get dissolved.

7 0
3 years ago
Which of the following would NOT be considered Lamarckian ideas about evolution?
wolverine [178]

Answer:

noelos

Explanation:

6 0
2 years ago
If Plant A with yellow flower (dominant trait) is crossed with Plant B white flower (recessive trait), what is the percentage of
marysya [2.9K]

Answer:

100%

Explanation:

Yellow flower color (Y) is dominant over white flower color (y). Plant A is YY while plant B is yy:

       YY    x    yy

  Yy    Yy    Yy    Yy

All the offspring would have Yy genotype and since Y is dominant over y, all of them will have yellow flower color as opposed to while.

<em>Hence, the percentage of the offspring that will have a yellow flower would be </em><em>100%.</em>

5 0
2 years ago
Which stable element is used to determine the age of volcanic rock? argon O carbon-14 O O potassium carbon-12 Which stable eleme
Verdich [7]

Answer:

Argon

Explanation:

Argon is actually used to determine the age. It's called potassium-argon dating b/c when volcano erupts the rocks in it contain potassium. The potassium slowly decays and produces argon. Scientists measure how much argon is in a given volcanic rock and do math backwards to figure out how many potassium atoms were needed to produce the given amount of argon. We already know the rate at which potassium decays so then they put two and two together to find the age.

Here's a link with some cool info on it:

https://divediscover.whoi.edu/archives/hottopics/volcano.html

3 0
1 year ago
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