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NikAS [45]
3 years ago
8

What do scientists need to extract the DNA from? How much DNA is there?

Biology
1 answer:
avanturin [10]3 years ago
5 0

Answer:

DNA extraction is a routine procedure used to isolate DNA from the nucleus of cells. When an ice-cold alcohol is added to a solution of DNA, the DNA precipitates out of solution. If there is enough DNA in the solution, you will see a stringy white mass.

Explanation:

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Korvikt [17]
I believe it is D solid to gas
8 0
3 years ago
You have isolated a previously unstudied protein, identified its complete structure in detail, and determined that it catalyzes
Finger [1]

Answer:

An enzyme whose activity is controlled by allosteric regulation.

Explanation:

Enzymes are proteins that<em> accelerate</em> chemical reactions within the cell. Enzymes bind to the substrate in the active site, catalyzes the reaction, for example the breakdown of the binding molecule, and release the product or products.

The enzyme activity need to be regulated. One of the mechanisms by which this occurs involves effector molecules, usually small molecules which bind to the regulatory site, called allosteric site. The binding to effector molecules may activate or inhibit the enzyme activity, consequently increasing or decreasing the rate of the reaction.  

This mechanism of enzyme control is called allosteric regulation.

The description of the protein isolated fits with this features,  an enzyme whose activity is controlled by allosteric regulation.

3 0
4 years ago
2. The allele for webbed hands (W) is dominant to normal hands (w). Complete a Punnett square
Anna11 [10]
A. both parent would be Ww
b. see picture (for the top left it would be Ww not wW)
c. 2 Ww, 1 WW, 3 ww (i think i’m not sure how to do ratio)
d. 75%?
e. 25%

8 0
3 years ago
One reason why a molecule may not be able to pass into or of the cell
Norma-Jean [14]

All cells have selectively permeable membranes, which means that only they let certain important molecules inside the cell, while the others stay outside the cell.

This occurs by the process of diffusion or osmosis.  

3 0
3 years ago
Which star is hotter proxima Centauri or deneb?
marissa [1.9K]

Answer:

deneb is hotter

Explanation:

4 0
3 years ago
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