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Elina [12.6K]
3 years ago
14

Why do scientists think that RNA may have evolved before DNA?

Biology
1 answer:
Sidana [21]3 years ago
6 0

Answer:

RNA was the first molecule of heredity before DNA came onto the scene.

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If there is no oxygen present, a cell can make 2 ATP from one glucose molecule. <br> True<br> False
atroni [7]
True I think! I’m pretty sure.
4 0
2 years ago
What is the monomer and polymer of carbs?
Airida [17]

Answer:

Monomers of carbohydrates are monosaccharides (mono- one; saccharide- sugar) which are simple sugars like glucose, fructose and galactose. Polymers of carbohydrates or polysaccharides include starch (most common and abundant polymer of carbohydrate), dextran, cellulose, hemi cellulose and pullulan.

Explanation:

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3 years ago
A. Cellular respiration <br> B. Fermentation<br> C. Photosynthesis<br> D. Respiration
seraphim [82]

Answer:

I believe option <u>C. Photosynthesis</u> is correct.

Explanation:

6H20 + 6CO2 + light = C61206+602 is the symbol form of Carbon dioxide  + water + light = sugars + oxygen.

Hope I could help!

3 0
3 years ago
Explain how thermohaline circulation is influenced by salinity and temperature.
marshall27 [118]

Answer:

Thermohaline circulation is influenced by changes in density gradients. These density gradients are affected by the salinity and temperature of the ocean’s water. Cold water is denser than warm water and salt water is denser than freshwater. As water cools off, it sinks. As water evaporates, the salt concentration of the remaining water increases because the salt from the evaporated water remains. This causes the water to sink and circulate.

Explanation:

8 0
2 years ago
Black fur(B) in guinea pigs is dominant over white fur(b). What is the probability of the offspring having white fur in a cross:
miv72 [106K]

Answer:

There is a 0% chance, since the only possibilities are BB and Bb when the punnett square is done.

Explanation:

4 0
3 years ago
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