4. Oxygen molecules move across cell membranes through a process called O diffusion
O collision
O engulfing
osmosis

What is the role of fadh2 in cellular respiration

What are the seven economic and social goals?

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit