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Questions and Answers
What type of transport does not require the cell to expend energy?
What type of transport does not require the cell to expend energy?
- Primary active transport
- Secondary active transport
- Simple diffusion (correct)
- Facilitated diffusion
In ligand-gated ion channels, what triggers the opening of the channel for ion transport?
In ligand-gated ion channels, what triggers the opening of the channel for ion transport?
- Active transport of ions
- Passive transport of ions
- A change in membrane potential (correct)
- Conformational changes in the protein
Which type of transport moves molecules against an energy gradient?
Which type of transport moves molecules against an energy gradient?
- Facilitated diffusion
- Secondary active transport
- Primary active transport (correct)
- Simple diffusion
What role do carriers or transporters play in facilitated diffusion?
What role do carriers or transporters play in facilitated diffusion?
At the neuromuscular junction, what initiates the release of acetylcholine into the synaptic cleft?
At the neuromuscular junction, what initiates the release of acetylcholine into the synaptic cleft?
Secondary active transport differs from primary active transport in that it:
Secondary active transport differs from primary active transport in that it:
What type of proteins are responsible for facilitated diffusion of sugars, amino acids, and nucleosides?
What type of proteins are responsible for facilitated diffusion of sugars, amino acids, and nucleosides?
Which statement is true about facilitated diffusion?
Which statement is true about facilitated diffusion?
What is one key characteristic of carrier proteins in facilitated diffusion?
What is one key characteristic of carrier proteins in facilitated diffusion?
In facilitated diffusion, what determines the maximum rate of transport?
In facilitated diffusion, what determines the maximum rate of transport?
Which type of transport pathway best describes carrier proteins in facilitated diffusion?
Which type of transport pathway best describes carrier proteins in facilitated diffusion?
How do carrier proteins differ from channel proteins in facilitated diffusion?
How do carrier proteins differ from channel proteins in facilitated diffusion?
What are the ions that are important for cellular reactions and the operation of cellular control mechanisms?
What are the ions that are important for cellular reactions and the operation of cellular control mechanisms?
What is the main function of membrane potential in excitable cells?
What is the main function of membrane potential in excitable cells?
Which protein is responsible for controlling fluidity and permeability in the lipid bilayer?
Which protein is responsible for controlling fluidity and permeability in the lipid bilayer?
Which organelle is responsible for synthesizing new protein molecules in cells?
Which organelle is responsible for synthesizing new protein molecules in cells?
What is the main function of peroxisomes in cells?
What is the main function of peroxisomes in cells?
In which type of transport do sodium molecules move against their concentration gradient?
In which type of transport do sodium molecules move against their concentration gradient?
What is the process by which ligand-gated ion channels open in response to a specific molecule binding?
What is the process by which ligand-gated ion channels open in response to a specific molecule binding?
Action potential in the neuromuscular junction is primarily due to the influx of which ion?
Action potential in the neuromuscular junction is primarily due to the influx of which ion?
Primary active transport involves the direct use of cellular energy, usually in the form of:
Primary active transport involves the direct use of cellular energy, usually in the form of:
What happens to water-soluble substances when they encounter a lipid bilayer?
What happens to water-soluble substances when they encounter a lipid bilayer?
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