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ki77a [65]
3 years ago
12

A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the

presence of which of the following is most appropriate in this situation?
Biology
1 answer:
ehidna [41]3 years ago
5 0

The options are :

A) phosphate

B) nitrogen

C) guanine

D) uracil

E) thymine

Answer:

The correct answer is E) thymine

Explanation:

DNA and RNA are both made up of nucleotide. There are two major difference between DNA and RNA. In DNA deoxyribose sugar is present and in RNA ribose sugar is present.

The other difference is in DNA thymine nucleotide is present which makes complementary base pairing with adenine but in RNA thymine is replaced by uracil.

Therefore testing for the presence of thymine is most appropriate in this situation to find out whether a nucleic acid sample is composed of RNA or DNA.

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Like DNA, RNA contains four nitrogenous bases. Three of them are the same as those found in DNA. The one that is different is ca
densk [106]
The nitrogenous bases in DNA are adenine, guanine, thymine, and cytosine.
The nitrogenous bases in RNA are adenine, guanine, uracil, and cytosine.
So the base in RNA that is different than in DNA is uracil.

Hope this helps.
6 0
3 years ago
Biomolecules broken down into MONOMERS<br> (list 4)
Paraphin [41]
Carbohydrates, lipids, proteins, and nucleic acids.
8 0
3 years ago
A fertilizer producer finds that it can sell its product at a price of dollars per unit when it produces units of fertilizer. Th
Vilka [71]

Answer:

700

Explanation:

If from the question the price per unit of fertilizer, p(x) = 300 - 0.1x

The cost of x units of  fertilizer = C(x) = 15000 + 125x + 0.025x^2

And we know that Profit = Revenue - Cost

Revenue for x units of fertilizer R(X) = x*p(x)

= 300x - 0.1x^2

Hence Profit: P(x) = R(x) - C(x)

= [300x - 0.1x^2] - [15000 + 125x + 0.025x^2]  

= -0.125x^2 + 175x - 15000

To determine critical values

P'(x) = -0.25x + 175 = 0

Thus x = 175/0.25

x = 700

To maximize profit, the manufactures must produce 700 units of fertilizers

5 0
3 years ago
Create a list of 5 things humans do to make the greenhouse effect worse
Aleonysh [2.5K]

Answer:

Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols (small particles), and cloudiness. The largest known contribution comes from the burning of fossil fuels, which releases carbon dioxide gas to the atmosphere

Explanation:

5 0
3 years ago
What is causing the roots of a plant to grow downward
makkiz [27]

Answer:

Geotropism is the influence of gravity on plant growth or movement. Simply put, this means that roots grow down and stems grow up. ... In this case, the stimulus is gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots is called positive geotropism.

Explanation:

8 0
3 years ago
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