QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Which of the following best describes passive transport?
A. Cellular transport that requires cellular energy in the form of ATP.
B. Cellular transport that does not require cellular energy.
C. Cellular transport in which the cell membrane pinches around a substance in order to bring it into the cell.
D. Cellular transport in which substances move from areas of low concentration to areas of higher concentration.
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Answer
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Step 1:I'll solve this step by step:
Step 2:: Understand the key characteristics of passive transport
Passive transport is a type of cellular transport where substances move across the cell membrane without requiring the cell to expend energy. This means the movement occurs naturally, following the concentration gradient.
Step 3:: Analyze the key properties of passive transport
- Substances move from an area of higher concentration to an area of lower concentration - No cellular energy (ATP) is required - Movement follows the natural tendency of molecules to spread out
Step 4:: Evaluate each answer choice
D. $$\text{Moves from low to high concentration}$$ - This is incorrect.
Passive transport does NOT require energy. Passive transport moves substances without using ATP. Passive transport moves from HIGH to LOW concentration.
Final Answer
Cellular transport that does not require cellular energy.
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