Multiple Choice
Which of the following correctly describes a general property of all electrogenic pumps?
6. The Membrane
Active Transport
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The force driving simple diffusion is ________, while the energy source for active transport is ________.
A
a concentration gradient; ADP
B
a concentration gradient; ATP hydrolysis
C
transmembrane pumps; an electrochemical gradient
D
phosphorylated carrier proteins; ATP
Verified step by step guidance1
Understand the concept of simple diffusion: Simple diffusion is a passive transport process where molecules move from an area of higher concentration to an area of lower concentration, driven by the concentration gradient.
Recognize the role of concentration gradient: In simple diffusion, the concentration gradient is the driving force, meaning molecules move down their concentration gradient without the need for energy input.
Understand active transport: Active transport is a process where molecules move against their concentration gradient, from an area of lower concentration to an area of higher concentration, which requires energy.
Identify the energy source for active transport: The energy required for active transport is typically provided by ATP (adenosine triphosphate) through a process called ATP hydrolysis, where ATP is broken down into ADP (adenosine diphosphate) and an inorganic phosphate, releasing energy.
Connect the concepts: The force driving simple diffusion is the concentration gradient, while the energy source for active transport is ATP hydrolysis, which provides the necessary energy to move molecules against their concentration gradient.
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Active Transport practice set
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