The citric acid cycle is activated in the presence of oxygen (O2), but what is the link between the citric acid cycle and O2

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.