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nignag [31]
3 years ago
11

3) Two students decided to repeat the Hershey and Chase experiment, with modifications for a science competition. They radioacti

vely tag the nitrogen of the DNA, rather than the phosphate. Each nucleotide has only one phosphate and two to five nitrogen atoms, the strategy of labeling the nitrogen atoms would detect a stronger signal than labeling the phosphates. Why won't this approach work
Biology
1 answer:
nlexa [21]3 years ago
6 0

Answer:

Explanation:

In the Hershey and Chase experiment, they aimed to show where the phage DNA went when it exited the protein coat and entered the bacteria. In this scenario, the two student's approach won't work because amino acids (and therefore all proteins) also have nitrogen atoms which ultimately means that the radioactivity would not distinguish between DNA and proteins and the experiment will not provide the correct results.

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3 types of animal like protest at least 3 types of plant like protest and at least 1 example of fungi like protozoan
MArishka [77]

Answer:

Animal-like protists include the flagellates, ciliates, and the sporozoans.

Explanation:

7 0
3 years ago
Life on earth began as the product of chemical reactions which occurred
Kazeer [188]

Answer: Over 4 billion years ago

Explanation: The chemical reactions between carbon and water is said to bring about life according to scientists. These reactions builds largely upon four families of chemicals (lipids, carbohydrates, amino acids, and nucleic acids).

However, the actual time of life on Earth has varying speculations from different scientists in fields of study (such as molecular biology, chemistry, oceanography, etc).

Furthermore, microfossils within hydrothermal-vent precipitates dated from 3.77 to 4.28 billion years is presumed to inhabit the oldest record of life on Earth. Hence, which is presumed to have occurred after ocean formation 4.4billion years ago.

Thus, the actual date of the chemical reactions that brought about life is not rigid, but presumed to have occurred over 4billion years ago (according to research).

7 0
3 years ago
Tiles: Sole; Proprietorship; Partnership; Corporation; Limited liability corporation
disa [49]
<h2>Answer</h2><h3>1)</h3>

<em>The business owners’ personal assets are protected from liabilities, but the business is not a separate tax entity </em>Limited liability corporation.<em> </em>

Limited liability corporation is not considered separate from its owners for tax purposes.

<h3>2)</h3>

<em>A single individual is personally responsible for all liabilities incurred by the business </em>Sole Proprietorship.

The business is owned and run by one person, and owner and business are considered as a same entity.

<h3>3)</h3>

<em>One business owner may contribute less time and effort than the other, leading to disputes and bitterness </em>Partnership.

The business is owned and run by more the one person which means there is more than one owner.

<h3>4)</h3>

<em>The business structure is strictly regulated by the government, requires an overwhelming amount of paperwork, and involves high start-up costs </em>Corporation.

A corporation is a legal entity that is separate and distinct from its owners.

<em />

3 0
3 years ago
How do cells get the proteins they need from foods?
Romashka-Z-Leto [24]
I believe the correct answer to this question is B.

This is the correct answer because the other options can be eliminated and this choice represents the proper process described in the question. Answer choice A describes photosynthesis, which is not being asked about in the question. Answer choices C and D are either partially false or describe an unmatching process with the question.

I hope this is correct and helps you!
4 0
3 years ago
Read 2 more answers
Tongue rolling is a dominant trait. If two individuals homozygous dominant for this trait have a child, what is the chance that
Marizza181 [45]

Answer:

0

Explanation:

Let's assume that the gene coding for tongue rolling is encoded by letter T.

The allele for tongue rolling (T) is dominant over the allele for inability to roll the tongue (t).

In a cross between two homozygous dominant individuals (TT) i.e. they have the same dominant allele in their genotype and hence, they can both roll their tongues.

(See attached image)

The cross will produce four possible offsprings, in which all will possess a homozygous dominant genotype i.e. all will be phenotypically able to roll their tongues. Hence, in the case of the child, the child will be able to roll his tongue.

The probability or chance that the child will be unable to roll his tongue is 0. Since there is none.

3 0
3 years ago
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