Multiple Choice
Transporter proteins transport solutes across the membrane via which of the following mechanisms?
89
views
9. Transport Across Membranes
Principles of Transmembrane Transport
Struggling with Cell Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of transmembrane transport, which statement correctly distinguishes active transport from passive transport?
A
Active transport occurs only through ion channels, whereas passive transport occurs only through carrier proteins (transporters).
B
Active transport moves solutes down their electrochemical gradient without energy input, whereas passive transport requires ATP hydrolysis to move solutes up their gradient.
C
Active transport occurs only in prokaryotic cells, whereas passive transport occurs only in eukaryotic cells.
D
Active transport requires an energy input (directly or indirectly, e.g., from ATP) to move solutes against their electrochemical gradient, whereas passive transport moves solutes down their electrochemical gradient without energy input.
3:37mWatch next
Master Membranes and Gradients with a bite sized video explanation from Kylia
Start learningRelated Videos
Related Practice
Principles of Transmembrane Transport practice set
Problem sets built by lead tutorsExpert video explanations