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Questions and Answers
What is the primary difference between active and passive transport?
What is the primary difference between active and passive transport?
- Energy requirements (correct)
- Direction of movement of a substance relative to its concentration gradient
- Speed of transport
- Type of molecules being transported
What type of transport involves moving ions across the membrane against the concentration gradient?
What type of transport involves moving ions across the membrane against the concentration gradient?
- Primary active transport (correct)
- Secondary active transport
- Facilitated diffusion
- Simple diffusion
Which type of transport protein changes shape to allow movement of molecules across the membrane?
Which type of transport protein changes shape to allow movement of molecules across the membrane?
- Facilitated protein
- Channel protein
- Pump protein
- Carrier protein (correct)
What is the term for the movement of bulk materials into or out of a cell?
What is the term for the movement of bulk materials into or out of a cell?
What is the term for a positively charged ion?
What is the term for a positively charged ion?
What type of transport is involved in the uptake of mineral nutrients from the soil by plant roots?
What type of transport is involved in the uptake of mineral nutrients from the soil by plant roots?
What is the primary function of the hydrophilic portion of a phospholipid molecule?
What is the primary function of the hydrophilic portion of a phospholipid molecule?
What is the orientation of phospholipid molecules during membrane assembly?
What is the orientation of phospholipid molecules during membrane assembly?
What type of molecule can easily pass through a plasma membrane unaided?
What type of molecule can easily pass through a plasma membrane unaided?
What is the function of the hydrophobic portion of a phospholipid molecule?
What is the function of the hydrophobic portion of a phospholipid molecule?
What is responsible for the selective permeability of a plasma membrane?
What is responsible for the selective permeability of a plasma membrane?
What type of molecules require help to get across the plasma membrane?
What type of molecules require help to get across the plasma membrane?
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