Which direction do the two strands of DNA run relative to each other?

Nucleotide base pairing in DNA is universal across organisms.  Each pair (T-A; C-G) consists of a purine and a pyrimidine.  Which of the following best explains how the base pairs form?

What is the primary role of chlorophyll a in photosynthesis?

What is the function of proto-oncogenes in the cell cycle?

In cellular respiration, which molecule serves as the final electron acceptor during aerobic respiration?

What sets up the concentration gradient in the thylakoid space during the light reaction?

What happens to the chromatids during anaphase of mitosis?

Which of the following can lead to cancer by causing a cell to divide uncontrollably?

What is the name of the small fragments synthesized on the lagging strand?

A chemist has discovered a drug that blocks glucose phosphate isomerase, an enzyme that catalyzes the second reaction in glycolysis.  He thought he could use the drug as an antibiotic, to kill bacteria in people with infections.  But he can’t do this because