Multiple Choice
Which of the following is a correct difference between active transport and facilitated diffusion?
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2. Cell Chemistry & Cell Components
Passive vs. Active Transport
Problem L3.1c
Textbook Question
Write a single sentence, using no more than 25 words, to summarize each of the following cellular processes:
Primary active transport
Verified step by step guidance1
Understand that primary active transport is a cellular process where energy from ATP is used to move molecules against their concentration gradient.
Identify the key components involved in primary active transport, such as the ATP molecule and transport proteins like pumps (e.g., sodium-potassium pump).
Recognize that this process is essential for maintaining cellular homeostasis, including ion balance and membrane potential.
Formulate a concise sentence summarizing the process, ensuring it includes the use of ATP, movement against the gradient, and its importance to the cell.
Review the sentence to ensure it is clear, accurate, and within the 25-word limit, emphasizing the core aspects of primary active transport.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Primary Active Transport
Primary active transport is a cellular process that uses ATP to move ions or molecules against their concentration gradient, establishing electrochemical gradients essential for cellular functions.
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Primary Active Transport
ATP (Adenosine Triphosphate)
ATP is the primary energy currency of the cell, providing the necessary energy for various biochemical reactions, including the active transport of substances across membranes.
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Concentration Gradient
A concentration gradient refers to the difference in the concentration of a substance across a space, driving the movement of molecules from areas of high concentration to low concentration.
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