The universal genetic language of dna is common to virtually all organisms on earth, however diverse. what is the best explanation for this fact?
a. all living things share a common genetic language of dna because they share a common ancestry
b. the universal genetic language is explained by the chemistry of dna and proteins
c. the universal nature of the genetic language of dna is due to coincidence

b

Explanation:

this is because everyones DNA is different, meaning that A is incorrect. C is incorrect because DNA is not a coincidence, its a complicated thing and just one wrong thing can lead to many bad things like down syndrome

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.