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olya-2409 [2.1K]
3 years ago
10

The hypothesis that, when life originated on Earth, a macromolecule other than DNA served in the role of information storage, an

d that this same macromolecule carried out catalysis, is called:
Biology
1 answer:
Andreas93 [3]3 years ago
4 0

Answer:

RNA world hypothesis.

Explanation:

RNA is present as the genetic material in some viruses only. RNA is produced from the template DNA by the process of transcription and helps in the protein gene expression.

According to RNA world hypothesis, RNA is considered to be the first genetic material as it has the ability to store the genetic material. The oxyribose sugar makes the RNA more reactive than the DNA molecule. The RNA also has the ability to work enzyme known as ribozyme. Hence, RNA has the ability to store the information and acts as catalyst.

Thus, the answer is RNA world hypothesis.

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8 0
3 years ago
At a location, rainwater runs off the face of a cliff that is 15 meters high. How is the face of the cliff most likely to change
natka813 [3]

The answer is;  Physical weathering by water would carve out the face of the cliff.


The bottom of the cliff would register the greatest weathering because of the force of the water hitting the rocks in the fall. As a cave is curved from the base of the cliff, the overhanging part of the cliff eventually collapses hence retracting the cliff a small distance upstream of the river. The diagram below demonstrates this;


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4 years ago
What is the caloric value of a carbohydrate<br>​
mafiozo [28]

Answer:

4 kcal per gram of carbohydrate

7 0
3 years ago
Which of the following best describes the result of meiosis II? (2 points)
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6 0
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Read 2 more answers
Answer the following True or False: A hypothesis test was conducted to see if a new HIV vaccination reduces the risk of contract
Anettt [7]

Answer:

The correct answer is - true.

Explanation:

Type I error occurs when the alternate hypothesis is accepted though it is false. A type II error is the failure to reject a false null hypothesis or an alternative hypothesis is rejected even though it is true.

For instance of type II errors: a blood test designed to detect the disease failing to detect the disease in a patient who really has the disease. In the given case vaccination not approved even though reduce the risk of contracting the HIV virus.

Thus, the correct answer is - true.

7 0
3 years ago
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