Where are the three cell cycle checkpoints found?

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Which of the following is not a possible effectof increasimg carbon dioxide levels in the atmosphere ?

Which of the following is a common response to cell signaling?