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Anuta_ua [19.1K]
3 years ago
10

What is the texture and consistency of the dna? 2. why did we use a salt in the extraction solution? 3. is the dna soluble in th

e aqueous solution or alcohol? 4. what else might be in the ethanol/aqueous interface? how could you eliminate this? 5. which dna bases pair with each other? how many hydrogen bonds are shared by each pair?
Biology
1 answer:
lions [1.4K]3 years ago
8 0

Explanation:

These questions are related to the extraction of DNA using detergents and ethanol.

1. Consistency and texture- the extracted DNA is white, spongy and moist or slime in nature.

2. Salt is used during the extraction process as the DNA is negatively charged molecule and to neutralize the negative charge which will allow the formation of precipitate.

3. The DNA is soluble in aqueous solution as the DNA is a negatively charged molecule therefore the negative charge makes it a polar molecule and it can form the interactions in the aqueous solution.

4. RNA could be present in the aqueous solution along with the DNA as both are the nucleic acid.

5. The base-pairing rule was suggested by the Chargaff who proposed that Adenine binds thymine and guanine binds cytosine.

5. The binding of adenine to thymine involves two hydrogen bonds and between guanine to cytosine involves three hydrogen bonds.

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Pea seed color exists as green or yellow. We might say that "yellow" is an example of a (an)_ for seed color
LiRa [457]

Answer:

b. allele

Explanation:

An allele is a variant form of a gene. In this problem, there is one gene (that determines seed color) with two possible alleles (green and yellow).

<u>The other options are wrong because:</u>

The genotype is the combination of alleles an individual has.

The karyotype is an individual's collection of chromosomes, paired and ordered.

A homozygote individual has the same alleles for a particular gene.

A heterozygote individual has different alleles for a particular gene.

6 0
3 years ago
The normal range of blood glucose is 70–120 mg/dL. A person has a blood glucose level of 170 mg/dL. Based on your knowledge of t
kifflom [539]

Answer:

The normal range of blood glucose is 70–120 mg/dL. A person has a blood glucose level of 170 mg/dL. Based on your knowledge of the endocrine system and hormones, explain the likely cause for the person's condition.

It could be as a result of high sugar intake which increases the individual's blood glucose level

Explanation:

From the assertion above, it could be deduced that the individual pancrease is no more functioning hence; no control of blood glucose level. Furthermore, the continuous intake of sugar or food materials with high sugar content contributes excessively to increase the blood glucose level in the body.

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3 years ago
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(a) and (d) are correct

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2 years ago
Which part of the ocean floor is the shallowest and closest to land ?
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4 0
3 years ago
Read 2 more answers
If a bowler rolls a bowling ball at a constant speed, would the force increase if he or she changes the weight of the ball? Expl
CaHeK987 [17]

Answer:

This is what we call Potential Energy and Kinetic Energy

Explanation:

If the bowler is rolling a ball, let's say 5 LBS, It should travel at normal speed.

The speed is also dependent on how the bowler throws the ball.

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It's like a person. The bigger and heavier they are, the slower they will move with their own consecutive speed. If they are lighter, they'll most likely go faster

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