Question

1. passive diffusion is the transportation of substances across the cell membrane that requires energy (atp) input from the cell. examples include simple diffusion, osmosis, facilitated diffusion. true or false 3. passive diffusion involves molecule movement from high concentration to low concentration, with the concentration gradient true or false 4. phagocytosis is a form of endocytosis that specializes in the destruction and disposal of waste. true or false 5. exocytosis is a mechanism cells use to actively secrete hormones, proteins, mucus, and other products out of the cell. the substance within the cell is carried in a membranous sac called a vesicle that migrates to and combines with the plasma membrane, expelling its contents into the extracellular space. true or false

Explanation:

1. Passive diffusion does not require energy input. So the statement is false.
2. Passive diffusion is the movement of molecules from high - to low - concentration areas along the concentration gradient, so it is true.
3. Phagocytosis is a form of endocytosis mainly for engulfing and destroying pathogens and debris, so it is true.
4. Exocytosis is an active process where cells secrete substances using vesicles, so it is true.

Answer:

1. FALSE
2. TRUE
3. TRUE
4. TRUE