Multiple Choice
Passive membrane transport processes include___________.
6163
views
48
rank
6. The Membrane
Passive vs. Active Transport
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following is a correct difference between active transport and facilitated diffusion?
A
Active transport involves transport proteins, and facilitated diffusion does not.
B
Facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.
C
Facilitated diffusion requires carrier proteins, but active transport requires channel proteins.
D
Facilitated diffusion involves transport proteins, and active transport does not.
E
Active transport requires an input of energy, and facilitated diffusion does not.
Verified step by step guidance1
Understand the basic definitions: Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy input, usually in the form of ATP. Facilitated diffusion is the passive movement of molecules across the cell membrane via transport proteins, without the need for energy input.
Identify the role of transport proteins: Both active transport and facilitated diffusion involve transport proteins. However, the key difference is that active transport requires energy to move substances against their concentration gradient, while facilitated diffusion does not.
Analyze the energy requirement: Active transport requires energy because it moves substances against their concentration gradient. In contrast, facilitated diffusion does not require energy as it moves substances down their concentration gradient.
Consider the direction of movement: In facilitated diffusion, substances move from an area of higher concentration to an area of lower concentration, which is a passive process. Active transport moves substances from an area of lower concentration to an area of higher concentration, which is an active process requiring energy.
Evaluate the options: The correct difference is that active transport requires an input of energy, while facilitated diffusion does not. This distinguishes the two processes based on their energy requirements and the direction of solute movement relative to the concentration gradient.
4:18mWatch next
Master Passive vs. Active Transport with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Passive vs. Active Transport practice set
Problem sets built by lead tutorsExpert video explanations