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Questions and Answers
What is the primary function of detecting chemical messengers arriving at the cell surface?
What is the primary function of detecting chemical messengers arriving at the cell surface?
- Maintaining homeostasis
- Detecting chemical messengers (correct)
- Regulating cell-to-cell communication
- Facilitating transport across cellular membranes
What is the main difference between passive and active transport?
What is the main difference between passive and active transport?
- The type of molecules being transported
- The direction of transport
- The presence of carrier proteins
- The requirement of additional energy (correct)
What is the primary mechanism of transport for small, nonpolar molecules across cellular membranes?
What is the primary mechanism of transport for small, nonpolar molecules across cellular membranes?
- Active transport
- Facilitated diffusion
- Carrier protein-mediated transport
- Diffusion (correct)
What is the purpose of carrier proteins in facilitated diffusion?
What is the purpose of carrier proteins in facilitated diffusion?
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What is the driving force behind diffusion?
What is the driving force behind diffusion?
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What is the characteristic of most molecules found in the intracellular fluid (ICF) and extracellular fluid (ECF)?
What is the characteristic of most molecules found in the intracellular fluid (ICF) and extracellular fluid (ECF)?
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