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3 years ago

Which vitamin can be synthesized in significant amounts by humans and, therefore, may NOT be essential

Biology

1 answer:

Nadya [2.5K]3 years ago

5 0

Answer:

The correct ansqwer is- Vitamin D

Explanation:

Vitamin D is the vitamin that can be synthesized by the human body itself therefore it is not an essential vitamin for human beings. Human skin is the part that helps in making this vitamin in humans.

The natural form of vitamin D is vitamin D3 which is formed by the sunlight exposure on the skin. When we expose our skin in the sunlight the UV radiation penetrated our skin and converts provitamin D3 into pre-vitamin D3 then this previtamin can be isomerized into the natural form of vitamin D Which is vitamin D3. So the right answer is vitamin D.

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Determine whether each of the following is a characteristic of a protist, fungus, or both.

n200080 [17]

Mycelium-Fungi

Heterotrophic-Both

Pseudopods-Protists

Contain cell walls with chitin-Fungi

Fruiting body-Fungi

Flagellum-Protists
I hope this helps out alot.

5 0

2 years ago

Read 2 more answers

A strain of a cereal grain can be either dark tan, medium-dark tan, medium tan, light tan, or cream colored. When a dark tan and

denis-greek [22]

Answer:

The correct answer is - 2 genes.

Explanation:

The number of genes involved in the coloration of the strain of cereal grain, could be either dark tan, medium-dark tan, medium tan, light tan, or cream-colored if all F1 are medium tan when crossed a dark tan crossed with cream-colored, can be calculated as follow:

suppose there are only two gene - TT dominant over tt and CC dominant over cc

then the cross would be - RRCC - rrcc

gametes - RC and rc

Cross F1: RrCc

Self cross in F2:

offspring by Punnet cross are:

RRCC -->1/16

RRCc, RrCC .---> 4/16

RrCc, RRcc, rrCC--->6/16

rrCc, Rrcc--->4/16

rrcc ----> 1/16

thus, the correct answer is 2 genes

6 0

2 years ago

All of earths water, land, and atmosphere within which life exists is known as

Sliva [168]

The answer is the Biosphere.

7 0

3 years ago

Read 2 more answers

The first scientist to classify living organisms into groups was?

zubka84 [21]

First scientist was Carl Linnaeus

7 0

2 years ago

During early ages, the alkaline hot liquids from the vent met the acidic cold ocean water. The acidic ocean water produced a nat

lorasvet [3.4K]

There are so many examples for that in different areas, like biology experiment carried out in our lab recently.

Here's one link:https://www.creative-biogene.com/support/Knockout-Cell-Lines-in-Antibody-Screening-and-Validation.html

8 0

3 years ago

Read 2 more answers