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olganol [36]
3 years ago
11

What vitamin derivative is used in medications for skin wrinkling and acne. health in later years?

Biology
1 answer:
Liono4ka [1.6K]3 years ago
7 0
Answer:
             Vitamin C is one of the most important ingredient of skin as it play a key role in synthesis of collagen necessary for elasticity of skin. 

Derivatives of vitamin C:
                                         Following are derivatives of vitamin C used in medication for skin wrinkling and achne:
 
<span>1. Ascorbyl-6-palmitate
2. Magnesium ascorbyl phosphate
</span>
Derivatives of vitamin A:

                                         There are four derivatives of vitamin A use in treating skin wrinkling, these are:

1.Retinol
2. Retinyl Palmitate
3. Retinaldehyde
3. Retinyl Retinoate




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Punnett square question? 80 PTS FOR BEST ANSWER!
kkurt [141]

Answer:

Explanation:

For number 4, it tells you that purple body color is dominant to blue.

When an allele is dominant over another allele (alleles are different forms of genes, represented using letters) that means only one dominant allele needs to be present to express the dominant phenotype (phenotype is the physical appearance determined by genotype). Since purple is dominant, we use a capital "P" to represent it. Since blue is not dominant, it is called recessive, so we use a lower-case "p" to represent it.

The first genotype they give you, it is "PP", and since at least one big P is there, the phenotype is purple.

The second genotype they give you is "Pp", and since there is at least one capital P, the phenotype is also purple. It does not matter that the second allele is a lower-case, because as long as there is a capital P present, it will masks the presence of the lower-case (recessive) allele.

The third genotype is "pp", both are lower-case, so there is not dominant allele to mask the recessive ones. So, the phenotype is blue. The recessive phenotype will only be phenotypically present if the genotype is homozygous recessive.

Homozygous - having both of the same alleles (PP or pp)

In which PP is known as homozygous dominant, because it is made from the dominant allele. And pp is known as homozygous recessive, because it is made from the recessive allele.

Heterozygous - having one dominant and one recessive allele (Pp)

Note: It does that really matter what letter you use, the importance is whether it is a capital or not because that tells you if it is dominant or recessive.

The same for square shape. It says that square is dominant over round, so a capital letter is used to represent square (S), and a lower-case to represent round (s).

Therefore, the phenotype would be:

Square, Square, round, respectively.

Number 5 is asking you to go from the phenotype (physical look) to the genotype.

Tall head is (T) and dominant to short (t).

Tall = could be PP or Pp (homozygous dominant or heterozygous). It could be both since in both genotypes at least one dominant allele is present, so it will result in a dominant phenotype.

Short = tt. It is "tt" because it is recessive, and the only way to physically show the recessive phenotype is to have a homozygous recessive genotype.

Green is dominant over blue, so again.

Green body - the genotypes could be GG or Gg. At long as there is one capital (dominant) allele.

Yellow body - gg (it is recessive, so it cannot have a capital "G", or that would masks the recessive g).

Hope this helps.

7 0
3 years ago
if a man with type ab blood marries a woman heterozygous for type A what is the probability that their child would be type B???
Anna11 [10]

Answer:

1/4.

Explanation:

Via a punett square, the only possible combinations are AA, AB, AO and BO. Since BO is the only way the child has type B, the chances are 1 in 4.

8 0
3 years ago
Wetlands are important ecosystems for many reasons. Select all that apply.
vazorg [7]

A, B, & D.

Wetlands DO NOT increase the rate of extinction of mammals by creating a loss of habitat. Wetlands rather form a habitat for many organisms creating a rich microcosm of an ecosystem.

Explanation:

Wetlands are land areas that are seasonally or permanently submerged in water. They include marshlands, estuaries, deltas, swamps, floodplains, and etcetera.  The plants within wetlands, such as mangrove slow down water runoff hence allowing settling down of, sediments and pollutants hence ‘cleaning’ the water.

Due to this fact that wetlands slow water movement, these ecosystems are significant in reducing flooding by ‘storing’ flood water and releasing it slowly hence acting like flood controls.

Learn More:

For more on wetlands check out;

brainly.com/question/12462555

brainly.com/question/1224667

#LearnWithBrainly

8 0
3 years ago
What is the disease called malaria
Licemer1 [7]

Answer:

Malaria is a life-threatening mosquito-borne blood disease. The Anopheles mosquito transmits it to humans. The parasites in mosquitoes that spread malaria belong to the Plasmodium genus. Over 100 types of Plasmodium parasite can infect a variety of species.

8 0
3 years ago
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In multiple fission, a cell is produced that has multiple ________. daughter cells spores nuclei parent cells
trapecia [35]

Answer:

Nuclei

Explanation:

Nuclei

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2 years ago
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