Match the following DNA strand to its complementary strand of RNA TAC - CCG - AAT - TCG

Answer Choices:
a. ATG - GGC - TTA - AGC
b. AUG - GGC - UUA - AGC
c. AUG - CCG - GGT - TCG
d. ATG - CCG - AAT - TCG

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

Add the following expressions. a. 2a+b and 3a+4b-c