how do eumelanin and pheomelanin affect our skin color?

Answers

Answer 1

Answer:

There are two types of melanin--eumelanin and pheomelanin. In general, the more eumelanin in your skin, the darker your skin will be. People who make more pheomelanin than eumelanin tend to have lighter skin with freckles. Like many other traits, the amount and kind of pigment in your skin is controlled by genes

Explanation:


Related Questions

10. According to Bohr's model of the atom, electrons behave like....
A. Waves on a vibrating string
B.Planets orbiting the
C.sun light energy in a vacuum​

Answers

B.Planets orbiting hiiiiii

In the diagram of the nitrogen cycle, which number represents nitrogen
2 points
gas?
Terrestrial
cycling
Animals
68
7
Decomposition
2
Uptake
of amino
acids
ΝΗ,
4
оо

Answers

Answer:

The illustration below shows translation in progress. The orange structure represents a ribosome and the dark grey ones labelled A and

B represent 2 tRNA. Fill in the blanks in the next sentence and answer the short essay question that follows.

A

5'-AGGGACUAUGAACAUUUACCAACUACGGUGGCGUUAGAC

Explanation:

A __________________ is a place holder or object where you can store a value or piece of data named by you

A biochemist extracts a molecule from a cell. This molecule catalyzes a chemical reaction. To what class of molecules does it belong?

A. Proteins
B. Carbohydrates
C. Lipids
D. Nucleic acids

Answers

Answer:

proteins create enzymes which speed up reaction

Enzymes are the molecules that catalyze biological reactions, while a catalyst is a material that aids in the occurrence of a chemical reaction, hence option A is correct.    

How do enzymes catalyze chemical reactions?

The crucial function of decreasing the activation energy of chemical events inside the cell is carried out by the majority of enzymes, which are proteins.

Enzymes are biological catalysts that significantly speed up reaction rates and have the propensity to be particular about particular reactants and products, a substrate is a term for the reactant in an enzyme-catalyzed process.    

Proteins are called enzymes to catalyze biological reactions that would not occur without them. For chemical reactions like digestion and cellular metabolism, these enzymes are necessary.

Therefore, since enzymes are a specific type of protein that catalyzes chemical events inside cells, they are excellent therapeutic targets, hence option A is correct.

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Which line points to the myelin sheath?

Answers

4.

Myelin Sheath is an insulator on the axon

Hope that helps! :)

Answer:D

Explanation:

The two main zones within the A climate are

Answers

Answer:

The Earth has three main climate zones: tropical, temperate, and polar. The climate region near the equator with warm air masses is known as tropical. In the tropical zone, the average temperature in the coldest month is 18 °C.

The climate has three main zones such as tropical, temperate, and polar.

What are Earth's climatic zone?

A climate zone refers to a condition by observing different factors like temperature, humidity, precipitation, season and natural vegetation of an area.

Earth's climate zones is surrounded by the horizontal belts of different climates such as tropical, dry, temperate, continental, and polar zones.

Firstly, Tropical climate zones which present near the Equator of earth and have high temperatures and high precipitation, while Dry or arid climate zones shows high temperatures  and little annual precipitation.

Similarly temperate climate zone observed  Earth’s middle latitudes and shows wider temperature and seasonal variations are more distinct.

Continental climate zone observed in mid-latitudes, shows swing of  temperatures  from cold in winter to warmer, where as polar climate zones shows harsh climate which cannot to support vegetation.

Hence, major zones are tropical, temperate, and polar.

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You have been looking at meiosis beginning with a diploid cell that has the genotype AaSs. The alleles in the haploid gametes produced by meiosis are

Answers

Answer:

AS, As, aS, as

Explanation:

Meiosis is the cell division that involves the production of daughter cells or gametes with a reduced number of chromosomes. i.e. diploid (2n) - haploid (n).

According to Gregor Mendel in his law of Segregation, the alleles of a gene will separate into gametes in such a way that only one allele will be present in each sex cell. Hence, in this diploid cell with genotype AaSs, the alleles will separate into the haploid cell in the following genotype proportion:

AS, As, aS, and as

A dihybrid cross experiment is carried out in pea plants. The traits being observed are flower color and stem length. In the F2 generation, 81 plants have purple flowers and long stems, 27 plants have purple flowers and short stems, 27 plants have white flowers and long stems, and 3 plants have white flowers and short stems.

Which traits are recessive?

A.purple flowers, long stem
B.purple flowers, short stem
C.white flowers, short stem
D.white flowers, long stem

Answers

C white flowers and short stem

Answer:

c

just took test

Explanation:

white flowers, short stem

Does a parrot eat a grasshopper?

Answers

, A green Parrot eats insects and it will also eat a grasshopper . Green Parrot is Omnivorous in Nature.

I hope this helped

how do you find per capita growth rate over a month?​

Answers

All you have to do is take the CGR (capita growth rate) percentage you just found and divide it by the number of years, months, etc. The complete formula for annual per capita growth rate is: ((G / N) * 100) / t, where t is the number of years.

LIQUID DENSITY COLUMN
-Olive Oil
-Vegetable Oil
please help me with this question thanks:)

Answers

Answer: Vegetable oil

Vegetable oil is the ans

9C. The diagram below shows an enzyme-catalyzed reaction. How do
enzymes speed up biochemical reactions? *
Carbon dioxide
Water
Enzyme
Substrates
(carbonic
bind to
anhydrose
enzyme
-Active site
Carbonic
acid
Enzyme-
substrate
complex
Products
are released
Substrates
are converted
into products
They lower the activation energy of the reaction
They increase the number of available reactant particles
They absorb energy from the products
They provide energy to the reactants

Answers

Answer:

They lower the activation energy of the reaction

Explanation:

Enzymes are proteinous biochemical molecules that serve as catalyst in living systems. They speed up the rate of biochemical reactions by lowering the activation energy of the reaction they are involved in.

As this question describes, enzymes possess an active site, which the substrate binds to yield products. The enzymes make the reaction faster by reducing the activation energy of the reaction, which is the energy needed to start a reaction.

Many male birds will expend a great deal of energy building nests. Females will mate with the males who build the best nests. This is best described as an example of ____.
a. ​natural selection
b. ​sexual selection
c. ​runaway selection
d. ​an invasive species
e. ​disruptive selection

Answers

Answer:

The correct answer is option B.  sexual selection.

Explanation:

Sexual selection is a special type of natural selection proposed by Charles  Darwin. According to this type of natural selection in which a particular sex organism chooses the opposite sex member of the species to mate with on the basis of the preferable traits and compete with the other members of the opposite sex.

Here female birds choose those male birds who build the best nests, it is an example of natural selection.

When a patient comes to a hospital with severe dehydration, doctors will give
them an IV filled with a salt-water solution called saline, which is isotonic with
the body's blood cells.
Why is the patient not given pure water?

Answers

Answer:

The red blood cells could burst.

Explanation:

If they are given pure water, the IV fluid will be hypotonic to the blood cells. That means water will end the red blood cells by osmosis, from a high concentration outside to a lower concentration inside.

This will result in the red blood cells becoming swollen and even potential  bursting.

If the mass of Earth were increased by a factor of 8.00 , by how many times would the force between Earth and the Sun increase?

Answers

Answer:They would increased a lot and cause problems.

Explanation:

-4. Which of the following correctly traces the path of air after it is inhaled?
A. epiglottis, trachea, bronchioles, alveoli
B. bronchioles, alveoli, epiglottis, trachea
C. epiglottis, bronchioles, alveoli, trachea
D. alveoli, epiglottis, trachea, bronchioles

Answers

The answer is c. Epiglottis, bro chilies, alveoli, trachea

Sensory System Knowledge Check
1. Which two senses are forms of chemoreception?

Answers

Answer:

taste and smell

Explanation:

there is ALSO more not only 2

Answer:

The senses and taste

Explanation:

Chrysanthemum pests and diseases include leaf miners, _____, powdery mildew and leaf spot

Answers

Answer:

aphids

Explanation:

it just is trust me

Describe how a rainforest can reach a point when it cannot be restored by secondary ecological succession

Answers

Answer:Although the secondary forest will be low in diversity and poorly developed, the forest cover will be adequate for some species to return (assuming they still exist).  The solution must be based on what is feasible, not overly idealistic, and depends on developing a new conservation policy built on the principle of sustainable use and development of rainforests. Beyond the responsible development of rainforests, efforts to rehabilitate and restore degraded forest lands along with the establishment of protected areas are key to securing rainforests for the long-term benefits they can provide mankind.

Explanation:

i lloke dit up online because i have not did this yet

A very high damaged leads to no restoration of rainforest by secondary ecological succession.

A rainforest can reach a point when it cannot be restored by secondary ecological succession when the large portion of the rainforest is destroyed and most of diversity is vanished. At this time, restoration is impossible due to very high damages.

Ecological resilience is the ability of an ecosystem to be restored through secondary ecological succession after a severe disturbance. Rainforest have a high biodiversity that helps it to resist damage but at a certain limit so we can conclude that very high damaged leads to no restoration of rainforest by secondary ecological succession.

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Which organelle makes lipids?

Answers

Answer:

endoplasmic reticulum

Explanation:

The endoplasmic reticulum is an organelle that is responsible for the synthesis of lipids and the modification of proteins.


Peroxisomes


Peroxisomes are metabolic organelles involved in bile acid synthesis, as well as the metabolism of glyoxylate, dicarboxylate, amino acids and lipids

what is Janus green b​

Answers

Answer:

Janus Green B is a basic dye and vital stain used in histology.

Explanation:

how do mutations affect our communications?​

Answers

Explanation:

When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition. A condition caused by mutations in one or more genes is called a genetic disorder. In some cases, gene mutations are so severe that they prevent an embryo from surviving until birth.Over time, a mutation might take place in one of the descendant cells, causing increased activity of a positive cell cycle regulator. The mutation might not cause cancer by itself either, but the offspring of this cell would divide even faster, creating a larger pool of cells in which a third mutation could take place.

section of DNA that provibes instuctions for specific traits

Answers

Answer:

Genes.

Explanation:

Genes are small sections of DNA within the genome that code for proteins. They contain the instructions for our individual characteristics – like eye and hair color. A gene is a small section of DNA that contains the instructions for a specific molecule, usually a protein

Genes are small sections of DNA within the genome that code for proteins. They contain the instructions for our individual characteristics – like eye and hair colour. A gene is a small section of DNA? that contains the instructions for a specific molecule, usually a protein. (I Hope this helps you :) )

Does this model represent a compound? Explain your answer.

Answers

Answer:

My Response, not the sample response in the explanation.

Explanation:

It is not a compound because it has two of the same atoms combined. You need two different atoms combined to make a compound.

I put this in the assignment and got it right.

why is it important to understand plant physiology in crop/plant production and productivity?in your discussion make sure that you mention related fields/areas in agriculture which specifically require a background of plant physiology ​

Answers

Knowledge of Seed physiology helps in understanding of different physiological and morphological changes that occur during germination.  By knowing the different inputs requirement of plants (water, nutrients, sunlight) we can easily manage the plant population to get highest yield.

The majority of pesticides do not have a residual effect (i.e., not persistent; lose chemical activity) in the soil.

a) True

b) False

Answers

Answer:

B- False

Explanation:

Pesticides can contaminate soil, water, turf, and other vegetation. In addition to killing insects or weeds, pesticides can be toxic to a host of other organisms including birds, fish, beneficial insects, and non-target plants. Soil can be degraded and the community of organisms living in the soil can be damaged by the misuse or over use of pesticides. Some pesticides are more toxic to soil organisms than others.

Hope this helps!

Our body cells undergo the process of the cell cycle and mitosis daily. Cells undergoing mitosis are important for growth and repair. Each new cell must be identical to its original cell. In order to ensure this works the genetic material must be duplicated. During which phase of the cell cycle does DNA replication occur

Answers

The “S” phase which is the phase of DNA synthesis

1. Which of the following does not absorb moisture readily ?
a.cotton
b.linen
c.viscose
d.acetate
e.nylon​

Answers

Cotton correct me if I’m wrong

Nylon does not absorb moisture readily.

What is nylon?Nylon is a synthetic fibre."It is made from reacting carbon-based chemicals found in coal and petroleum in a high-pressure, heated environment."It looks somewhat like silk.It is water repellent.

Hence, the correct option is e. nylon.

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What is the keystone species

Answers

Answer:

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically

Explanation:

Answer:a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Explanation:

The American Beaver (Castor canadensis) is one example of a keystone species in North America. In any arrangement or community, the “keystone” is considered one of the most vital parts. In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together.

Lateralization refers to the
a. number of neurons produced during prenatal development.
b. organizational structure of the peripheral nervous system.
c. specialization of the two hemispheres of the cerebral cortex.
d. plasticity of the spinal cord.

Answers

C. Specialization of the two hemispheres of the cerebral cortex

which kingdoms contain organisms that are multicellular You by bacteria archaea bacteria plant Amenia​

Answers

Answer:

(B and (C    

Animalia and Plantae

Explanation:

Got it right on edge (:

The kingdoms that contain organisms that are multicellular are Plantae, Animalia, and Fungi.

What are multicellular organisms?

Multicellular organisms are living beings that comprise cells, they represent the prevailing form of life, on our planet encompass a range of organisms such, as plants, animals, fungi and certain protists.

The emergence of organisms has bestowed benefits compared to their unicellular counterparts. Notably their ability to achieve sizes and intricate complexities sets them apart.

Moreover multicellular organisms possess the capability to differentiate their cells for functions. This adaptability enables them to thrive in environments and enhances their edge in securing vital resources.

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Why did the Tea Act of 1773 anger colonists?A: It meant they would not be able to buy tea.B: It closed the port of Boston to all trade.C: It forced merchants to buy tea from Africa.D: It favored a British company over merchants. Absolute value is DISTANCE. How many units a number is away from zero.a.) 3b.)4C.) -3d.) -4 -1/10 divided by 1/6 The forth amendment protects citizens from________. Which process does not release energy?a photosynthesisb lactic acid fermentationc cell respirationd alcoholic fermentation What is the standard form of 3.457 Plz help!! I need help Bill can hit a bucket of 32 golf balls in 17 hours.How much could he hit in 23 hours Buffer stock is the level of stock Kenson and Shelly are each saving money. Kenson has $60 in savings and will save an additional $12 every week. Shelly has $85 in savings and will save an additional $7 every week.Which equation can be used to determine w, the number of weeks it will take Kenson and Shelly to save the same amount of money?A. 720 + 60w = 595 + 85wB. 7w + 595 = 12w + 720C. 60 + 7w = 85 + 12wD. 60 + 12w = 95 + 7W Can someone please help me? The point (2,0) lies on the graph of the function y = 2x^2 - 8x + 6.A. TrueB. False How do you write -4.50 as a mixed number You bought 12 red apples and 15 green apples to make a pie.What is the ratio of the number of red apples to the total number of apples? 4 over 9 Identify a passage in Chapter 8 that relies on figurative language for part of its meaning or effect. First, summarize the passage. Then analyze its style, using what you learned in this lesson, and describe the effect the passage might have on readers. How did the passage make you feel? What information were you able to gather about the characters featured in the passage? in roll of thunder hear my cry can someone explain to me how to do this Any number to the zero power is always: A. zero B. a positive C. a negative D. one Write a brief summary of what Confucianism is.Write a brief summary of what Daoism is.Write a brief summary of what legalism is. Solve for I.-30 = 5(x + 1) Solve the equation 3x + 4y = 16 for x.O A x V 16B. x=3(16-4)O c. x = 16 - 4yO D. x. 18 AV