A substance moves across a cell membrane from a higher concentration to a lower concentration, without using the cell’s energy or the use of membrane proteins, this is due to _________.

Question

Diffusion - Definition, Examples and Types | Biology Dictionary

a
diffusion
b
facilitated diffusion
c
sodium potassium pumps
d
endocytosis

Answer 1

The correct answer is a. diffusion.

Diffusion is the process where substances move from an area of higher concentration to an area of lower concentration without the use of cellular energy (ATP) or the assistance of membrane proteins.