When mitosis occurs, the dna inside the cell's nucleus must replicate. the new cell that is formed has an identical copy of its parent cell's dna. that means it has the same information coded in its genes. during dna replication, how is an accurate new copy of dna formed?

dna polymerases add nucleotides to the exposed base pairs according to base-pairing rules.

during dna replication uracil bases hold the place of all thymine bases until the newly formed double helix is able to form hydrogen bonds.

dna helicases add nucleotides to the exposed bases and ensure the formation of hydrogen bonds

Now it's your turn to investigate human impact around the world. grab your virtual lab coat and put on your environmental science hat. you will be taking a trip around the globe to explore three locations. at each location, you will investigate the cause and effect relationships of deforestation, desertification, and urbanization. you will also gather evidence of how these factors have impacted the environment over time

Which statement about the immune system is false? a. lymphocytes reduce inflammation, b. b cells remember specific pathogens. c. most white blood cells kill bacteria d. white blood cells are made in lymph nodes.

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