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Anni [7]
3 years ago
5

According to the RNA World hypothesis, which of these tasks was accomplished by early RNA, but is not generally accomplished by

the RNA of today's organisms?
A. carrying genetic information
B. carrying information for making proteins
C. replicating, or making copies of itself
D. acting like a battery to store and release energy
Biology
1 answer:
kondaur [170]3 years ago
3 0

A

Unlike in the past, the RNA of today does NOT carry genetic information.

Explanation:

The RNA world hypothesis stipulates that  RNA used to store genetic information before the evolution of DNA. RNA, however, is very unstable and it is believed it is the reason for the evolution of DNA which is a more stable form of storing genetic information of cells.

The RNA world hypothesis is supported by the fact that RNA is multifaceted and can also catalyse reactions –like protein enzymes, makes up ribosomes, and can self replicate.

Learn More:

For more on RNA world hypothesis check out;

brainly.com/question/12754535

#LearnWithBrainly

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Maurinko [17]

Answer:

A balance of bodily fluids will prevent the development of diseases, the deterioration of body organs, and death of animals.

Explanation:

Water, blood, saliva, sweat and other body fluids should be kept constant and balanced through homeostasis because the sharp rise and fall of these fluids will prevent the organs of the body from operating optimally and this can lead to the development of diseases and consequent death. For example, water is a vital fluid. Too much of water in the system can lead to diseases like Edema where the legs begins to swell because there is no way of letting out body fluids from the body.

Too little water in the body can lead to dehydration and the increase in blood pressure because of the excessive concentration of solutes. The digestive and urinary systems have  mechanisms to keep this fluid under control.

6 0
3 years ago
Bio help! will mark brainliest
Furkat [3]
Hi there!

A prezygotic isolating mechanism is a mechanism that causes something to happen, not allowing the organisms to breed before fertilization. I'll explain each one for you.

A - That is postzygotic because the organisms were not stopped before fertilization. The result is a sterile organism.
B - Again, that is postzygotic because the organism was produced. 
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D - Fertilization was successful, so it is postzygotic.

ANSWER:
C - the sperm dies when it reaches the female tract

If you need help with any more problems, feel free to message me and I'd be more than happy to help you work through them and provide explanations.

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6 0
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Read 2 more answers
Plzzzzz help
kati45 [8]
4 is B. It wasn't in the genes to get short wings.
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I believe the correct answer would be B.  Semipermeable means that it allows certain substances to pass through, and certain other ones to not pass through.  So given all of your options, I would say that B makes the most sense.  Hope this helped!

-TTL

7 0
3 years ago
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