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Questions and Answers
What are the types of passive transport across the cell membrane?
What are the types of passive transport across the cell membrane?
- H2O, Gases (O2, CO2, N2), Lipids
- Diffusion, Osmosis, Facilitated diffusion (correct)
- Water channels, ion channels, solute carriers
- Pumps, phagocytosis, Endocytosis/exocytosis
What is the cell membrane permeable to?
What is the cell membrane permeable to?
- Pumps, phagocytosis, Endocytosis/exocytosis
- Small, charged molecules
- $H_2O$, Gases (O2, CO2, N2), Lipids (correct)
- $H_2O$, Large molecules such as amino acids, glucose and larger
What drives the movement of compounds across the cell membrane?
What drives the movement of compounds across the cell membrane?
- Both chemical and electrical forces (electrochemical force) (correct)
- Movement from an area of high concentration to low concentration
- $H_2O$, Gases (O2, CO2, N2), Lipids
- Positive ions are attracted to negative ions and vice versa
What are factors affecting the rate of transport across the cell membrane?
What are factors affecting the rate of transport across the cell membrane?
What are examples of active transport across the cell membrane?
What are examples of active transport across the cell membrane?
What is creatinine clearance used to estimate?
What is creatinine clearance used to estimate?
What can early detection of kidney disease help prevent or delay?
What can early detection of kidney disease help prevent or delay?
What does creatinine clearance provide information about?
What does creatinine clearance provide information about?
What does impaired kidney function lead to in terms of creatinine clearance?
What does impaired kidney function lead to in terms of creatinine clearance?
What is important to note about creatinine clearance as an estimation?
What is important to note about creatinine clearance as an estimation?
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Study Notes
Passive Transport Across the Cell Membrane
- Types of passive transport: diffusion (simple and facilitated), osmosis, and filtration
- Cell membrane is permeable to: small, non-polar molecules, oxygen, carbon dioxide, and water
Movement of Compounds Across the Cell Membrane
- Movement driven by: concentration gradient, temperature, and pressure
Factors Affecting Rate of Transport
- Factors affecting rate of transport: concentration gradient, surface area, temperature, and membrane permeability
Active Transport Across the Cell Membrane
- Examples of active transport: pumps (e.g., sodium-potassium pump), endocytosis, and exocytosis
- Active transport requires energy (ATP)
Creatinine Clearance
- Creatinine clearance used to estimate: glomerular filtration rate (GFR)
- Early detection of kidney disease helps prevent or delay: kidney failure, cardiovascular disease, and other complications
- Creatinine clearance provides information about: kidney function and GFR
- Impaired kidney function leads to decreased creatinine clearance
- Important to note: creatinine clearance is an estimation and may not reflect actual GFR
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