Imagine you have discovered a new species of bacteria. To begin your investigation of this organism, you run an assay on the total nucleotide content of the bacterial RNA. If the cytosine content of RNA from the bacterial cells is 40%, what is the adenine content?

The correct answer is 10%

Explanation:

According to the chargraff's rule, the ratio of purine and pyrimidine is equal to 1  which means purine is equal to pyrimidine. It also says that some of adenine and guanine is equal to the sum of cytosine and thymine. So adenine must be equal to thymine and guanine must be equal to cytosine.

So if cytosine amount is 40% then the amount of guanine would be also 40% so the remaining 20% would be made by adenine and uracil in RNA so adenine would make 10%. Therefore the correct answer is 10%.

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.