DNA damage checkpoints are crucial for preventing cell proliferation when DNA damage has occurred The role of DNA checkpoint proteins in the cell cycle is closely tied to the roles of DNA repair enzymes, although these proteins perform different functions. Which of the following statements is true for DNA checkpoint proteins and not for DNA repair enzymes? A. These proteins remove a single nucleotide of damaged DNA B. These proteins nick the phosphodiester backbone of the damaged DNA. C. These proteins prevent the cell cycle from progressing if damaged DNA is detected D. These proteins remove the region of damaged DNA.

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

How do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.

As kate is moving down the hill, what type of energy does she have? a. sound energy b. electrical energy c. light energy d. mechanical energy