Which statement best describes lactic acid fermentation? A. Lactic acid fermentation is the final stop of cellular respiration.

B. Lactic acid fermentation is the first step of cellular respiration.

C. In the absence of oxygen, cells released ATP by breaking down lactose into glucose

D. In the absence of oxygen, cells released ATP by breaking down glucose into lactate.

What links the two strands in a dna helix together in the middle? a. phosphate groups b. sugar rings bonded together c. proteins d. bases with hydrogen bonds

Biology 1c cumulative exam i need awsners

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.