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Mnenie [13.5K]
3 years ago
7

A chemical reaction is the only way to separate an?

Biology
1 answer:
irga5000 [103]3 years ago
5 0

Answer:  Mixture

Explanation:

If there is and unstable element composition of say, pure graphite an un-pure gold then a chemical reaction will most likely be used to separate the two elements.

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Which statement best distinguishes plant and animal as they relate to amino acids?
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Ans.

There are twenty amino acids that take part in protein synthesis. These amino acids act as precursor for all protein molecules and are known as essential amino acids. Plants can synthesize all twenty amino acids from simple precursors, while animals can make only twelve amino acids. Animals obtain remaining eight amino acids by eating plants.

Thus, the correct answer is 'option) D.'


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3 years ago
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Match these nutrients with their functions. (iodine, Vitamin D, Vitamin A, phosphorus, Vitamin E, Vitamin K, water, Vitamin B, c
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Answer;(iodine, Vitamin D, Vitamin A, phosphorus, Vitamin E, Vitamin K, water, Vitamin B, calcium, Vitamin C, iron)

1. helps cells function normally ----vitamin E

2. needed by all cells, especially by red blood cells, to help carry oxygen ---iron

3. helps in forming blood cells, helps resist infection, helps prevent fatigue and aids in healing, prevents scurvy ----vitamin C

4. helps keep skin healthy, protects against night blindness, promotes healthy eyes -----vitamin A

5. used by the body to form bones and teeth, helps blood clot, helps muscles and nerves work normally ----calcium

6. keeps nervous system healthy, keeps appetite and digestion healthy, helps body chemistry to function normally ----vitamin B

7. helps blood to clot ----vitamin K

8. necessary to carry nutrients to cells and carry away waste products ----water

9. helps body use calcium and phosphorus to form strong bones ----vitamin D

10. similar to calcium; needed by all cells in small amounts to help them use other nutrients for energy ---phosphorus

11. helps control rate of metabolism of food ----Iodine

Explanation:

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3 years ago
What type of attack relies on the attacker tricking the sending host into thinking his or her system is the receiving host, and
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The enveloped virus make the cell think that they just found a jackpot of protein, only to find a virus inside to take over the system, like the trojan horse.
8 0
4 years ago
Thalidomide and l-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that _____.
klemol [59]

Answer;

-are mirror images of one another.

Thalidomide and l-dopa, shown below, are examples of pharmaceutical drugs that occur as enantiomers, or molecules that are mirror images of one another

Explanation;

-Enantiomers are chiral molecules that are mirror images of one another. Furthermore, the molecules are non-superimposable on one another. This means that the molecules cannot be placed on top of one another and give the same molecule. Chiral molecules with one or more stereocenters can be enantiomers.

Enantiomers have identical chemical and physical properties in an achiral environment. They rotate the direction of plane polarized light to equal, but opposite angles and interact with other chiral molecules differently.

4 0
3 years ago
Which biological molecule is necessary in the process described in the passage?
Feliz [49]

Answer:

im so sorry but you cannot get an answer because you have not posted the passage from the question.

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