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Questions and Answers
In a scenario where a cell needs to move a substance against its concentration gradient, which of the following processes is required?
In a scenario where a cell needs to move a substance against its concentration gradient, which of the following processes is required?
- Active transport, utilizing cellular energy. (correct)
- Osmosis, driven by water concentration differences.
- Diffusion, relying on kinetic energy alone.
- Filtration, based on a pressure gradient.
If a patient's lung function is impaired, and oxygen exchange is significantly reduced, which cellular process is most directly affected?
If a patient's lung function is impaired, and oxygen exchange is significantly reduced, which cellular process is most directly affected?
- Normal rates of osmosis in digestive tract.
- Sufficient endocytosis of pathogens by immune cells.
- Effective filtration within kidney cells.
- Efficient diffusion of oxygen into the bloodstream. (correct)
A medication is designed to target and inhibit a specific organelle responsible for modifying and packaging proteins. Which of the following organelles is the most likely target?
A medication is designed to target and inhibit a specific organelle responsible for modifying and packaging proteins. Which of the following organelles is the most likely target?
- Mitochondrion
- Golgi apparatus (correct)
- Nucleolus
- Lysosome
If a researcher is studying the role of a specific organelle in protein synthesis and observes that a particular cell line has a reduced capacity for protein production and a less granular endoplasmic reticulum, which organelle is most likely dysfunctional?
If a researcher is studying the role of a specific organelle in protein synthesis and observes that a particular cell line has a reduced capacity for protein production and a less granular endoplasmic reticulum, which organelle is most likely dysfunctional?
A scientist is investigating a new drug that selectively disrupts the permeability of the cell membrane. Which aspect of the cell membrane is most likely affected by this drug?
A scientist is investigating a new drug that selectively disrupts the permeability of the cell membrane. Which aspect of the cell membrane is most likely affected by this drug?
Flashcards
Diffusion
Diffusion
Movement of a substance from an area of high concentration to an area of low concentration.
Oxygen Diffusion
Oxygen Diffusion
Movement of oxygen from the lungs into the blood due to concentration differences.
Filtration
Filtration
The process of pushing water and solutes through a membrane due to hydrostatic pressure.
Golgi Apparatus
Golgi Apparatus
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Cell Membrane
Cell Membrane
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Study Notes
- Diffusion is one way substances can move.
- Oxygen transport from the lungs, where it has a high concentration, into the blood which has a lower concentration, is done through diffusion.
- Filtration is the process that describes the pushing of water across the capillary membrane.
- The Golgi apparatus puts the finishing touches on proteins and packages them for export from the cell.
- Ribosomes are the structures that give the rough endoplasmic reticulum a sandpaper-like appearance.
- The cell membrane is described as a semipermeable lipid bilayer.
- The composition of the selectively permeable membrane is tough connective tissue, much like a ligament.
- The selectively permeable membrane determines which substances enter and exit the cell.
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