Multiple Choice
By which mechanism would a steroid molecule diffuse into the cell?
404
views
6. The Membrane
Simple and Facilitated Diffusion
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is a similarity between simple diffusion and facilitated diffusion?
A
Both processes move substances down their concentration gradient.
B
Both require the presence of transport proteins.
C
Both require energy input from ATP.
D
Both involve the movement of water molecules.
Verified step by step guidance1
Understand the concept of diffusion: Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration, down their concentration gradient.
Identify the types of diffusion: Simple diffusion occurs directly across the phospholipid bilayer, while facilitated diffusion requires the help of transport proteins.
Compare energy requirements: Both simple and facilitated diffusion are passive transport processes, meaning they do not require energy input from ATP.
Consider the role of transport proteins: Simple diffusion does not involve transport proteins, whereas facilitated diffusion does require them to help move substances across the cell membrane.
Evaluate the movement of water molecules: The movement of water molecules specifically is called osmosis, which is a type of simple diffusion, but not all diffusion processes involve water.
5:10mWatch next
Master Simple and Facilitated Diffusion with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Simple and Facilitated Diffusion practice set
Problem sets built by lead tutorsExpert video explanations