What is mRNA?

A. a DNA sequence at the start of a gene

B. a DNA strand that cannot be transcribed

C. an RNA segment that does not code for proteins

D. an RNA copy of a DNA gene

well Mrna usually means the form of RNA in which genetic information transcribed from DNA as a sequence of bases is transferred to a ribosome.

so as far as i know

it is D. an RNA copy of a DNA gene

hope it helps : )

Explanation:

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.