During replication, the strands of a DNA molecule separate from each other when an enzyme called helicase breaks hydrogen bonds between A phosphate groups
B deoxyribose sugar
C amino acids
D nitrogenous bases

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

Which process of living things produces water that enters the water cycle