The skin possesses a number of amazing protective properties, and one of the most notable is skin coloration as a protection against U.V. irradiation. Briefly, describe the anatomical, biochemical and physical means by which the skin adapts to U.V. radiation. How does light (U.V.) potentially disrupt cellular function and how is melanin poised to protect against damage. Describe four features of melanin as it relates to interpersonal differences between individuals, and what impact does this have on rates of skin cancer. Describe at least one method used to associate U.V. irradiation with either skin damage or repair.

Answers

Answer 1

Answer:

Melanin is a skin pigment.

Explanation:

Melanin is a skin pigment that is present in the bottom layer of the skin's epidermis. Melanin may help protect the skin from Ultraviolet rays. Increasing in the concentration of melanin may block processes in the body that lead to skin cancer. Ultraviolet light kills cells by damaging their DNA. The light starts a reaction between two molecules of thymine which is one of the bases that is responsible for the formation of DNA molecule. Melanin has the ability to absorb Ultraviolet light which automatically protects skin cells. The presence of melanin in the skin decreases the rate of skin cancer diseases around the world.


Related Questions

The skin acts as a first line of defense against
moles,
burns,
O abnormalities,
O infections,
DONE

Answers

Answer:

infections

Explanation:

infections because infections first react on skin

when you serve in table tennis, where must the ball contact after you hit it with a paddle

Answers

Answer:

The serve must bounce in the server's right court, and receiver's right court

Hope i helped :)

List as many recreational drugs as you can think of

Answers

Answer:

alcohol ,tobacco and caffeine

Coffee/caffeine weed over the counter alcoholic beverages Tylenol Plz mark me brainliest

it is recemended that you drink some water durring exsersis, it helps prevents you from becoming dehdrated, but can be dangeruse due to your bodey shuting of the need to pee durring exsersize, wich can lead to water intoxitashion

Answers

Yes you should always drink water during any specific excercise. Water keeps you hydrated

Which of these is most likely true about having a healthy body weight?

A. Reduces motivation

B. Reduces risk of disease

C. Encourages inactivity

D. Encourages fatigue

Answers

Answer:

a

Explanation:

Answer:

hope this helps <3

Explanation:

I beleive its b!

any plans for summer? ​

Answers

Answer:

Have a great Summer Ya'll

Explanation:

Play piano

Eat lots of junk food

and have a great time

:):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)::):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):):):):):):):):)::):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):)):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)):):)

Manufacturers sometimes use science to make foods more nutritious. When a manufacturer makes reduced fat potato chips, what else is true about these reduced fat chips compared to regular chips?

They are lower in calories.

They are lower in cholesterol.

They have more vitamin A.

All of the choices are correct.

Answers

They are lower in cholesterol, correct?!

About 150 years ago, food choices were very different from what they are today. Which of the following describes the changes in nutrient consumption?

In today's diet, we consume more fiber and less fat.

In today's diet, we consume less fiber and more fat.

In today's diet, we consume more fiber and more fat.

In today's diet, we consume less fiber and less fat.

Answers

Answer: In today's diet, we consume more fiber and less fat.

Explanation:

Even though one would think that we are eating more fat than fibre in the current age on account of the obesity levels that we currently have, the opposite is actually true. Humans are generally eating more fibre and less than the past.

This is down to better farming techniques that provide a wider variety of food than humans had available to them in the past and a lot of that variety includes food that are high in fiber.

Which of the following is the best reason to maintain a healthy weight?
A. To reduce the risk of diabetes
B. To save money on clothing
C. To have more friends
D. To increase the risk of disease

Answers

Answer: A. To reduce the risk of Diabetes

Explanation:

Reduce the risk of diabetes

Which treatment improves blood flow by helping to open a narrow blood vessel?
a stent
a cardioversion
a valve replacement
a vascular graft

Answers

Answer:

A stent

Explanation:

Answer:

it is a stent

Explanation:

A stent is a tube that your doctor inserts into a blocked passageway, such as a blood vessel, to keep it open.

The batting team (or offense) scores a run only when the runner tags "HOME PLATE" True
False

Answers

true since that’s how they get the points.
true. YOUR WELCOME!!!

Your sister, Katia, has recently become pregnant. While you're excited, you are also concerned about Katia's health due to her
poor eating habits. What advice would you give to Katia to help her improve her eating habits and nutrition? Describe specific
foods/nutrients that she should add into her diet and why.

Answers

Answer:

fruits and veggies

Explanation:

.

10
Select the correct answer.
If a person becomes winded or too out of breath to talk, an activity's intensity level may be considered vigorous.
A.
True
B.
False

Answers

Answer:[tex]A true[/tex]

Explanation:

The answer to this is true

1. Leftover chili is cooled on the countertop. This is an example of which of
the following?
A. Cross contamination
B. Poor personal hygiene
C. Time-Temperature abuse
D. Chemical contamination

Answers

Answer:I believe it is c

Explanation:

Which of the following is NOT considered when selecting instructional materials?
A. Reading level
B. Alignment with standards
C. Adaptability
D. Parent preference

Answers

D.) Parent preference

In the process of teaching and learning, the use of instructional materials allows the learner to touch, smell, or taste many objects. Students can be taught knowledge and skills using a variety of pertinent instructional materials. Thus, option D is correct.

What considered when selecting instructional materials?

The accuracy and visual attractiveness, adherence to standards and depth of knowledge, convenience of use and support, and engagement and. The ability to fulfill students' needs—were the four main categories of criteria that teachers reported using when choosing instructional materials.

Every subject in the school curriculum can only be learned with the help of instructional resources. They enable the pupils to communicate through words.

Therefore, Parent preference is not considered when selecting instructional materials.

Learn more about materials here:

https://brainly.com/question/29638035

#SPJ2

Bungee jumping has joined the ranks of surfboarding skateboarding and sky surfing to be classified as an extreme sport.

Which sentence demonstrates the needed corrections for the sentence?

Group of answer choices

Bungee jumping has joined the ranks of surfboarding, skateboarding, and sky surfing as an official extreme sport.

Bungee jumping has joined the ranks of, surfboarding, skateboarding, and sky surfing, as an official extreme sport.

Bungee jumping has joined the ranks of surfboarding, skateboarding and, sky surfing as an official extreme sport.

Bungee jumping has joined the ranks of surfboarding, skateboarding and sky surfing as an official extreme sport.

Answers

Answer:

the first sentence!

Explanation:

Answer:

Bungee jumping has joined the ranks of surfboarding, skateboarding, and sky surfing as an official extreme sport.

Explanation:

my bad, the first one is where all the commas are supposed to be.

Х
8. If your instructor asked you to explain what can happen to foreign particles that
enter the respiratory system, which of the following would not be included in your
explanation?

Answers

Answer:

What do you mean by "which"?

Explanation:

I mean you didn't even give anything for us to pick.

Which of the following is an example of a Imaging error

Answers

Answer:

could you atleast add answer choices?

Explanation:

Where are the choices so we can help answer

Bacteria grow especially fast in the temperature range of
A. 0°F (–18°C) to 212°F (100°C).
B. 41°F (5°C) to 141°F (61°C).
C. 41°F (5°C) to 70°F (21°C).
D. 70°F (21°C) to 125°F (52°C).

Answers

Answer:

40 °F and 140 °F (4°C and 60°C )

define substitute in basketball

Answers

Answer: In team sports, substitution (or interchange) is replacing one player with another during a match. Substitute players that are not in the starting lineup (also known as bench players, backups, interchange, or reserves) reside on the bench and are available to substitute for a starter.

Explanation: Hope this help :D

For which drugs did emergency room visits increase from 2004 to 2009?

Answers

I believe the answer is RX pain relievers
But Marijuana is a close second
Among ED visits involving illicit drugs, only those involving ecstasy increased more than 100 percent from 2004 to 2009 (123.2 percent increase)

By breathing in and out through the nose you absorb Oxygen around 15%
better when compared to mouth breathing, meaning you provide more
"food" for the brain, which leads to better grades in school*
True
False

Answers

Answer:

The contribution of bronchial blood flow to lung gas exchange can be assumed to be negligible.

Conclusions:

The lung consumes about 5% of whole-body oxygen uptake.

Answer:

I need this answer too and the one that put it there wasnt very clear can you help me is it true or false

Explanation:


Describe what a research problem is with a relevant
example?

Answers

Definition:

A research problem is a statement about an area of concern, a condition to be improved, a difficulty to be eliminated, or a troubling question that exists in scholarly literature, in theory, or in practice that points to the need for meaningful understanding and deliberate investigation.

The ? nerves control the muscles in the arms, shoulders, and neck.

Answers

Brachial plexus. The brachial plexus is a group of nerves that control the muscles of the shoulder, arm, forearm, and hand.

How can reinforcing positive behaviors help a teenager from risky situations? (Think consequences)

Answers

Answer:

Reinforcing Positive behaviors can a help a teenager from the risk of getting pregnant and from spreading STDs.

Hope this Helps!

What are factors that mostly influence a person’s ability to workout at a fitness center?

Answers

Answer:

Explanation: to lose weight

True or False

If hypertension is not treated, it can cause permanent damage to the heart, kidneys, and blood vessels.

Answers

Answer:

True

Explanation:

Left untreated, hypertension can result in permanent damage to the small blood vessels of the body, which can damage organs such as the heart, brain and kidneys, leading to heart attacks, stroke and kidney failure. It can also cause acute or chronic circulatory problems.

A client thinks they injured their shoulder, what should the trainer do?

Answers

Answer:D. Refer them to a doctor

Explanation:

How do I stay motivated?

Answers

Answer: this is what i did

5 Tips for Staying Motivated (even if you're really not feeling...

Set realistic goals. You may have heard this before, but setting SMART goals can help organize how you approach different achievements. ...

Have a support system. ...

Recognize your roadblocks. ...

Be nice to yourself. ...

Celebrate the small and big victories.

Are people today more healthy or less healthy than 20 years ago?

Answers

Answer:

they are more healthy

Explanation:

more doctors are available

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