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Questions and Answers
What is the plasma membrane primarily made of?
What is the plasma membrane primarily made of?
- Water molecules
- Lipid bilayers (correct)
- Glucose molecules
- Proteins and RNA
Which of the following molecules are permeable through lipid bilayers?
Which of the following molecules are permeable through lipid bilayers?
- Glucose
- Ions like Na+
- Proteins
- Water (correct)
What process describes the movement of molecules due to random motion to achieve equal distribution?
What process describes the movement of molecules due to random motion to achieve equal distribution?
- Osmosis
- Active transport
- Diffusion (correct)
- Bulk flow
Which molecules are lipid bilayers NOT permeable to?
Which molecules are lipid bilayers NOT permeable to?
In which direction does water flow in osmosis?
In which direction does water flow in osmosis?
What term defines the bulk flow of water through a semipermeable membrane into a compartment with higher solute concentration?
What term defines the bulk flow of water through a semipermeable membrane into a compartment with higher solute concentration?
What type of solution has a higher concentration of solutes compared to another solution?
What type of solution has a higher concentration of solutes compared to another solution?
In osmosis, where do water molecules move in response to a higher concentration of solutes?
In osmosis, where do water molecules move in response to a higher concentration of solutes?
Which type of proteins in the cell membrane form pores that allow ions and nutrients to move through?
Which type of proteins in the cell membrane form pores that allow ions and nutrients to move through?
What is the term used to describe the process where ions and nutrients move through the cell membrane via channels or transporters?
What is the term used to describe the process where ions and nutrients move through the cell membrane via channels or transporters?
What term describes a red blood cell placed in a solution where the osmotic pressure outside is higher than inside causing it to shrink?
What term describes a red blood cell placed in a solution where the osmotic pressure outside is higher than inside causing it to shrink?
Which molecule is involved in causing hyperekplexia by acting on glycine receptors?
Which molecule is involved in causing hyperekplexia by acting on glycine receptors?
What determines the relative contribution of an ion in crossing the plasma membrane?
What determines the relative contribution of an ion in crossing the plasma membrane?
Which process often uses the Na+ gradient as a driving force for regulated movement of nutrients across the membrane?
Which process often uses the Na+ gradient as a driving force for regulated movement of nutrients across the membrane?
What cellular process involves engulfing particles?
What cellular process involves engulfing particles?
Which process is heavily implicated in nutrient uptake, signal transduction, and synaptic vesicle recycling?
Which process is heavily implicated in nutrient uptake, signal transduction, and synaptic vesicle recycling?
Which organelle is involved in Clathrin-mediated endocytosis?
Which organelle is involved in Clathrin-mediated endocytosis?
How do cell membranes regulate the flow of substances into and out of cells?
How do cell membranes regulate the flow of substances into and out of cells?
What is the main function of aquaporins?
What is the main function of aquaporins?
How does active transport differ from passive transport?
How does active transport differ from passive transport?
What is the main consequence of the action of the Na-K ATPase pump?
What is the main consequence of the action of the Na-K ATPase pump?
What establishes the electrochemical driving force in cells?
What establishes the electrochemical driving force in cells?
What did Peter Agre win the Nobel Prize for in 2004?
What did Peter Agre win the Nobel Prize for in 2004?
In active transport, what role does ATP play?
In active transport, what role does ATP play?
What is the main difference between channels and transporters in the cell membrane?
What is the main difference between channels and transporters in the cell membrane?
Which process is implicated in the movement of substances by engulfing particles into the cell?
Which process is implicated in the movement of substances by engulfing particles into the cell?
In patch-clamping, what is the primary function of the ion channels being studied?
In patch-clamping, what is the primary function of the ion channels being studied?
What role does the sodium-potassium pump play in cellular processes?
What role does the sodium-potassium pump play in cellular processes?
What is the main function of aquaporins in cell membranes?
What is the main function of aquaporins in cell membranes?
How does active transport differ from facilitated diffusion regarding the movement of substances across membranes?
How does active transport differ from facilitated diffusion regarding the movement of substances across membranes?
What type of transport requires energy to move molecules against their concentration gradient?
What type of transport requires energy to move molecules against their concentration gradient?
Which process involves the movement of ions and nutrients through channels or transporters in the cell membrane?
Which process involves the movement of ions and nutrients through channels or transporters in the cell membrane?
What is the primary function of the Sodium-Potassium Pump in cells?
What is the primary function of the Sodium-Potassium Pump in cells?
What technique is used to study the function of single ion channels in cells?
What technique is used to study the function of single ion channels in cells?
In active transport, which molecule provides the energy needed for carrying out this process?
In active transport, which molecule provides the energy needed for carrying out this process?
What characterizes facilitated diffusion compared to active transport?
What characterizes facilitated diffusion compared to active transport?
What is the primary function of the sodium-potassium pump in cells?
What is the primary function of the sodium-potassium pump in cells?
Which of the following processes uses the Na+ gradient as a driving force for regulated movement of nutrients across the membrane?
Which of the following processes uses the Na+ gradient as a driving force for regulated movement of nutrients across the membrane?
What distinguishes active transport from facilitated diffusion?
What distinguishes active transport from facilitated diffusion?
Which organelle is primarily involved in Clathrin-mediated endocytosis?
Which organelle is primarily involved in Clathrin-mediated endocytosis?
In the context of cellular function, what does patch-clamping primarily allow scientists to study?
In the context of cellular function, what does patch-clamping primarily allow scientists to study?
Which of the following correctly describes the relative contribution of an ion in crossing the plasma membrane?
Which of the following correctly describes the relative contribution of an ion in crossing the plasma membrane?
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