During replication, the strands of a double-stranded DNA molecule separate from each other when bonds are broken between their A. nitrogenous bases
B. 5-carbon sugar
C. phosphate groups
D. amino acids

What are some possible short and long term medical concerns for crew members on longer space exploration trips

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?