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Dvinal [7]
3 years ago
8

What is the difference between vitamin d and vitamin d3.

Biology
2 answers:
Korolek [52]3 years ago
7 0
Vitamin D (D2) comes from plant sources, such as wild mushrooms, as well as fortified foods, such as milk or cereal products. Its strength is typically measured in international units, which is abbreviated as “IU” on labeling. The 50,000 IU capsules are prescription only, while lower strengths are available over-the-counter. Vitamin D is less expensive to produce and therefore is the form most commonly found in fortified food products.

Vitamin D3 mainly comes from animal sources such as fish oil, fatty fish, liver, and egg yolks. When your skin is exposed to sunlight, it produces vitamin D3. For this reason, it is sometimes referred to as the sunshine vitamin. Its strength is also measured in international units. All forms of vitamin D3 are available over-the-counter.
sattari [20]3 years ago
4 0

Answer:

Vitamin d comes from mainly plants, but vitamin d3 comes from animal resources. Vitamin d3 is made when sunlight strikes the skin.

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How can a chemical reaction be sped up?
astra-53 [7]

Answer:

Add a catalyst

Explanation:

A chemical reaction can be sped up by many factors. ... Add a catalyst (A substance that reduces activation energy, speeding up the reaction) Increase the concentration of reactants. Increase the concentration of catalysts

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Which of the following is an example of secondary succession? A. breaking down of bare rock by fungi and mosses B. pioneer plant
Tom [10]

Answer:

C. growth of plants after a forest is destroyed by fire

Explanation:

When the ecological succession occurs on the land or region which was never inhabited by plants previously, the process is called primary succession. On the other hand, secondary succession occurs on land where the existing vegetation was destroyed by some disturbances. Secondary succession is a fast process compared to the primary succession as the soil is already present to support the growth of plants.

Among the given examples, the growth of plants after the vegetation of forest was destroyed by fire represents the process of secondary succession. Growth of vegetation on bare rocks, in the cracks in the concrete surface, or after the melting of glaciers represents the process of primary succession.

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Which two major parts of the Earth system does this photo most clearly show? A. Hydrosphere B. Atmosphere C. Cryosphere D. Biosp
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7 0
3 years ago
In a particular species of frogs, black spots are a dominant trait and their absence is a recessive trait. In a population of fr
kipiarov [429]

The expression which is the correct way to calculate the frequency of the dominant allele is 134/200. Thus, the correct option is D.

<h3>What is Allelic frequency?</h3>

The allelic frequency may be defined as the sum total of all the alleles of a gene in a population. It represents the overall genetic diversity within a population.

The allelic frequency is calculated by the formula when the genotypes are given in number. It is as follows:

2 × Number of Purebred dominant + Number of heterozygous/ 2× Total number of individuals in a population.

∴ Allelic frequency of dominant allele = 2 × 50 + 34/ 2× 100 = 134/200 = 0.67.

The allelic frequency of the Dominant allele is 0.67 while the allelic frequency of the recessive allele is 0.33.

Therefore, it is well described above.

To learn more about Allelic frequency, refer to the link:

brainly.com/question/14649601

#SPJ1

5 0
2 years ago
The first capital of ancient Egypt was __________. A. Cairo B. Thebes C. Memphis D. Alexandria
Ulleksa [173]

Answer:

<em>The first capital of ancient Egypt was Memphis. I'm 100% positive</em>

Explanation:

<em>Hope this helps! Have a blessed day!</em>

6 0
4 years ago
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