Question 18(Multiple Choice Worth 4 points) (01.03 MC)

It is hypothesized that RNA may have evolved before DNA because RNA molecules

A

were the first molecules synthesized by Miller and Urey

B

are more important to genetic inheritance than DNA

C

can catalyze a variety of biologically important reactions

D

are found in more modern cells than are DNA molecules

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

if you add everything up correctly you should get 69 i got this because 50 plus 19 is it

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.