What is the relationship between UV radiation and melanin

Answers

Answer 1
UVA radiation causes lesions or DNA damage to melanocytes, which are the skin cells that produce the skin pigment known as melanin. Melanin is a protective pigment in skin, blocking UV radiation from damaging DNA and potentially causing skin cancer.

Related Questions

Plz help me well mark brainliest if you are correct!!

Answers

Answer:

All of these are natural resources.

Explanation:

Because they are not manufactured.

Name the 4 bases found in DNA.

Answers

Answer:

thyminene, T

adenine, A

guanine, G

cytosine, C

Explanation:

Answer:

Adenine, thymine, cytosine and guanine

Explanation:

The evolutionary species concept defines a species as: A. a group of populations that have shared a past and will have a shared future B. reproductively isolated populations C. smallest monophyletic taxa D. morphologically similar populations

Answers

Answer:

The correct option is A.

group of populations that have shared a past and will have a shared future

Explanation:

This is because evolutionary species concept is a concept that indicate a form of ancestry descendants or lineage of populations that descend from the same ancestors possessing similar characteristics which were inherited from the ancestry and these traits are evident in the future.

what does Risk Management mean

Answers

Answer:

(in business) the forecasting and evaluation of financial risks together with the identification of procedures to avoid or minimize their impact.

Explanation:

Answer:

Risk management mean managing the risks you take if financially, biologically, and in life. Indentifying, assesing,  and controlling risks.

When energy is transferred to or from a substance, it can change the molecules’ freedom of movement. True or False?

Answers

Answer:

True

Explanation:

When transfer energy, the substance's temperature changes which can change the molecules' freedom. For example, when water freezes the water molecules loose temperature and slow down, unlike in a gas where molecules are free and energetic.

PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.

Answers

Answer:

a

Explanation:

Answer:

I'm pretty sure that the answer is A

Plz help Well mark brainliest if you are correct!!

Answers

Answer:

Rachel Carson (B)

Explanation:

She was an marine biologist.

An ecologist is someone who studies an environment such as the ocean and also studies the things in the environment.

check this for me pls

Answers

Answer:

it's both A and B for your answer

Explanation:

both genders can get this disease since it's being past down to their children or offspring, some may get that gene and some might not.

a.
lose their leaves seasonally
b.
trees keep their leaves, whether broadleaf or needleleaf, year-round
a. angiosperm b. cryptosperm
O a. angiosperm b. gymnosperm
O a. gymnosperm b. angiosperm
a. cryptosperm b. chynosperm

Answers

Answer:

Should be B

Explanation:

Sorry for the previous wrong answer, I'm pretty sure it's B because I took the test and it said B

According to the question option, "B" trees keep their leaves, whether broadleaf or needle leaf, year-round a. angiosperm b. cryptosperm is correct.

What is the difference between angiosperms and gymnosperms?

Gymnosperm seeds are configured as cones.

Thus, the correct option is "B".

To learn more about angiosperms click here:

https://brainly.com/question/12939745

Give a scenario in which a new ecosystem would be created

Answers

global warming. if the world pollutes too a certain level of extreme , a new ecosystem would do some good

Give me your best shot of explaining how this occurred. This is different from the twins as this time both parents have darker skin, some of the offspring share that same skin color and some are albino

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The parents might be heterozygous for albinism. So Aa and Aa for example. So their children have a 25% chance of having albinism

How do divisions in the geologic time scale differ from the way we organize time using a clock?

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Explanation:

The Earth's geologic past is divided into hierarchical time periods. This hierarchy comprises eons, eras, times, epochs, and ages, from largest to smallest. The Cenozoic, Mesozoic, and Paleozoic Periods are the three main divisions of the Phanerozoic.

The geological timescale is the official earth clock and differs from the way we organize time using a clock, as the planet's time is too long for us to use measures of hours.

Geologic timescale

Planet Earth is about 4.5 billion years old. To better understand its history, scientists divide geologic time into five levels of classification, called chronostratigraphic units:

EonsErasPeriodsEpochsand ages.

Eons are large and indeterminate spans of time and are divided into four classifications:

Phanerozoic (last 542 million years)ProterozoicArcheanand Hadean.

Of them, only the Hadean is not divided into ages. The ages are characterized according to the different positions of continents, oceans and their living beings. Within the ages are divided in the periods. Epochs, in turn, are divisions within periods and are divided into ages. According to the researchers, we currently live in the Quaternary period of the Cenozoic era.

To get a rough idea of ​​how much the existence of the human being is a mere recent episode in Earth's geological time, we use some analogies. For example, if the entire history of the planet were summarized in the twenty-four hours of a day, the existence of humanity would have occurred in the last three seconds of that same day.

Understanding the dimension of geological time and its scales of measurement becomes a fascinating mental exercise to better understand the role of man in relation to this temporality and his role as heir of all the transformations that have taken place in terrestrial space throughout the geological ages.

Learn more about Geological time in https://brainly.com/question/10134253

How did black leaders and abolitionists embody the democratic principles and ideals of liberty and equality in their actions?

Answers

The Civil Rights Movement did not suddenly appear out of nowhere in the twentieth century. Efforts to improve the quality of life for African Americans are as old as the United States. By the time of the American Revolution in the late eighteenth century, abolitionists were already working to eliminate racial injustice and bring an end to the institution of slavery

I need help on homework

Answers

Answer:

i wanna say the second to last one

Explanation:

The greatest amount of energy is released by the...

Answers

The greatest amount of energy is real eased by the :Oxidation of glucose to carbon dioxide and water. (I’m not exactly sure what your talking about so sorry if it wrong!)

Q1(Describe the two eukaryotic animal organelles that have roles similar to the organs of the human digestive system)Q2(Describe how proteins are made packaged and transported within the cell plz help fast

Answers

Answer:

Describe the two eukaryotic animal organelles that have roles similar to the organs of the human digestive system

→Two eukaryotic animal cell organelles that have roles similar to the organs of the human digestive system are lysosome and mitochondria.

Describe how proteins are made packaged and transported within the cell

→Vesicles transport the proteins from the ribosomes to the Golgi apparatus, a.k.a Golgi complex, where they are packaged into new vesicles. The vesicles migrate to the membrane and release their protein to the outside of the cell. Lysosomes digest and recycle the waste materials for reuse by the cell.

Answer:

lysosomes and mitochondria.

[tex] \: \: \: \: \: \: \: \: \: [/tex]

why groups of animals are found on some islands but not others?

Answers

Answer:

Wilson has created the theory of the biogeographic nature of the island, which predicts that the number of species on the island depends on the balance between colonization, the evolution of the novel island species, and extinction.

Explanation:

A new DNA sequence containing 596 species of terrestrial birds from 41 island chains (archipelagos) around the world has been assembled by the researchers. The data combined sample data from their own field visits, research, and field samples from GeneBank colleagues. This information was utilized to build and employ a dynamic model that predicted international relationships that regulate biodiversity variation in their novel analysis approaches. In that, they confirmed two main components of MacArthur and Wilson's initial biogeography theory on the island.

The understanding of biodiversity on the island is important to conservation but also has implications beyond that – when imposing barriers to species dispersal it could enable us to assess better the effects of human activities, and it can contribute to a wider understanding of biodiversity around the globe.

fertilization is the process by which an a)egg and pollen combine b)embryos grow into plants c)animal carries pollen between plants d)ovule breaks open and release seeds​

Answers

Answer:

l

Explanation:

1. What do you know about gravity?
2. How could gravity affect the water cycle?

Explain your answer.''

Answers

Explanation:

What do you know about gravity?

ans:Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe. ... where G is called the Gravitational Constant.

How could gravity affect the water cycle?

ans:It pulls precipitation down from clouds and pulls water downhill. Gravity also moves air and ocean water. ... Gravity pulls denser air and water downward, forcing less dense air and water to move upward. The warm water near the surface of the ocean heats up with sunlight and evaporates, keeping the water cycle in motion.

Should humans use synthetic materials that have natural material that is the same chemically? PLZ I NEED THIS NOW

Answers

Answer:

It Depends . Like Some People Use Fake Skin For Tattoos , Made To Practice Stitches , Or Injections .. It Just Really Depends On What You Are Doing If This Helps ..

Which step occurs in meiosis to prepare for fertilization in sexually
reproducing organisms?

Answers

Answer: 12 sexual reproduction and meiosis concept outline

Explanation: The process of meiosis produces unique reproductive cells called gametes, which have half the number of chromosomes as the parent cell. Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition. Thus, sexually-reproducing organisms alternate between haploid and diploid stages.

Hope this helps :D

*Earth Science* Active continental margins where the plate boundary is ocean-continent convergent are characterized by accretionary wedges.
True or false?

Answers

The correct answer is True

Explanation

An accretion wedge is an area where deformed sediment accumulates that occurs at a convergent edge at the boundaries of subduction plates (ocean-continent). This process occurs when sediments from the oceanic crust accumulate to the block of continental crust produced. by the subduction movement of the oceanic crust. So, the correct answer is True.

According to Charles Darwin theory of natural selection

Answers

the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D

Answer:

C or D

Explanation:

the answer should be the species most adaptable to changes (like in the environment etc.) but I would go for C or D

Why do organisms die if they do not have enough water?​

Answers

Answer:

Organisms need water for the following activities: (1) All cellular processes occur due to water. (2) Transportation of substances in our body takes place by dissolving in water. (3) Terrestrial animals require fresh water for transportation of minerals and for getting rid of waste from their body.

Explanation:

Without water they cant do any of this.

Answer:

Cells will lose water and the chemical reactions take place in water. Without enough water, this can't happen.Explanation:

How does the photolysis of water benefit the biosphere?

Answers

I need more information.

Identify the existence of Neutrons.

Answers

The atomic number (the number of protons) did not equal the atomic weight.

74. As layer upon layer of sediments are deposited, the process of the presses them
together.

Answers

Answer:

GO GET BOY

Explanation:

. Rain washing away soil from a hillside is an example of.... *
1 point
weathering
erosion
deposition
Plz helpp

Answers

Answer:

erosion

Explanation:

rain moving soil is the earths crust slipping, also known as erosion

Answer:

Erosion

Explanation:

because weathering is the breakdown of rocks by physical or chemical weathering, deposition is the dropping of eroded material, and erosion is the movement of rock material from one place to another.

Hope you understood the concept at least.

what gene combination will have 50% chance of occurring if two heterozygous black and chickens are mated 
please answer!!

Answers

It will be the one with capital and lowercase for example you will get (using Hh alleles for example)

(HH, Hh, Hh, hh)

So it will be the 2nd and 3rd combo, the heterozygous dominant it will have one dominant allele and one recessive

How can genes be turned on and off?

Answers

Answer:

please give me brainlist and follow

Each cell expresses, or turns on, only a fraction of its genes at any given time. The rest of the genes are repressed, or turned off. The process of turning genes on and off is known as gene regulation.

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