Cells typically respond to DNA damage in three ways: by ceasing to grow and divide until the damage is repaired, by permanently ceasing to grow and divide, or by dying. In 2010 a group of
scientists reported that a certain kind of immune reaction can cause DNA damage that leads to a
fourth response. DNA damage can turn off genes involved in cell-signaling pathways. Turning off
cause less-mature cells to divide too rapidly, often leading to the development of

Maria wanted to grow a fern in her backyard. acting on a suggestion from a friend, she collected brown dots from the underside of a fern's leaves and then potted them. after a few days, maria saw small fern leaves erupting from the pot. which statement explains this phenomenon? a. the fern transitioned from gametophyte generation to sporophyte generation. b. the fern grew as a result of mitosis. c. the fern transitioned from sporophyte generation to gametophyte generation. d. the fern grew to be genetically identical to its parent plant.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

The negative impacts of nonnative species generally outweigh the positive impacts