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Natasha2012 [34]
3 years ago
5

What exists as rna surrounded by a protein coat?

Biology
1 answer:
ehidna [41]3 years ago
3 0
I believe the answer is retrovirus 
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When an individual has a healthy cardiovascular system, what is blood pressure and blood volume dependent upon?
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Answer:

D

Explanation:

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Santos and Lüderitz are the same distance from the equator, and both cities are near the ocean. The air temperature in Lüderitz
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Answer:

The currents cause the air to be different.

Explanation:

If you look at a current map, you'll see that there is a warm current near Sanots and a cold one near Lüderitz. Therefore, the temperature of Sanots must be higher and the temperature of Lüdertizt will be colder.

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Photosynthesis must occur for plants to survive. Which of the following best explains why photosynthesis is necessary?
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Answer:

the answer is D

4 0
3 years ago
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Why is it important that cell growth in a multi- cellular organism be regulated so carefully?
xxTIMURxx [149]

Answer:

It is important that cell growth in a multi-cellular organism be regulated carefully so as to maintain the integrity of the cell cycle

Explanation: Each cell in a multi-cellular organism has it cycle which consist of the inter-phase and the m-phase (active division). Cell growth takes place in the G1 phase of the inter-phase and this ensures that deoxy ribonucleic acid is synthesized in the S-phase in preparation for division.

Hence, adequate cell volume is a key event in order for division to take place. If cell growth is not regulated, it might result in a cell exiting the cell cycle into the resting phase in case of slow growth or result in over-division of a cell in case of over-stimulated growth. The latter is often the case in the development of cancerous cells.

7 0
3 years ago
All BUT one is a method of passive transport in cells.
algol13

Answer:

The correct answer will be option-A

Explanation:

The transport of the molecules between cells and a cell and its surrounding is very important to survive.

A cell has evolved two ways to transport the molecules which are passive and active movement or transport.

The passive movement is the movement of the molecules across the membrane depending on the concentration gradient without using any source of energy which is utilized in active transport.

In the given question, osmosis is the process which can be considered passive movement as it transports the water down the concentration gradient without using any source of water.

Thus, osmosis is the correct answer.

7 0
3 years ago
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