QQuestionBiology
QuestionBiology
What is diffusion?
A. Directional
B. Non-random
C. Passive
D. None of the above
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Answer
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Step 1:I'll solve this problem step by step, focusing on explaining diffusion clearly.
Step 2:: Understanding Diffusion
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. This process occurs naturally without requiring external energy input.
Step 3:: Key Characteristics of Diffusion
Let's analyze the key properties of diffusion: - Molecules move from high to low concentration - Occurs spontaneously - Does not require cellular energy - Follows a concentration gradient - Happens across a permeable membrane
Step 4:: Evaluating the Answer Choices
A. Directional - Incorrect. Diffusion is not strictly directional but follows the concentration gradient. B. Non-random - Incorrect. Diffusion is actually a random molecular movement. C. Passive - Correct! Diffusion is a passive transport process that does not require cellular energy. D. None of the above - Incorrect.
Step 5:: Explanation of Passive Transport
Passive transport means molecules move without the cell expending energy. In diffusion, molecules naturally spread out from areas of high concentration to low concentration due to their inherent kinetic energy.
Final Answer
Passive
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