QUESTION IMAGE
Question
homework: define the following vocabulary words for the quiz next week. study each day.
- homeostasis
- aquaporin
- isotonic
- hypotonic
- hypertonic
- facilitated diffusion
- diffusion
- osmotic pressure
- active transport
- passive transport
- cell membrane
- selectively permeable
To solve this, we'll define each vocabulary term related to cell biology (a subfield of Biology, Natural Science):
1. Homeostasis
The ability of an organism or cell to maintain a stable internal environment despite external changes.
2. Aquaporin
A channel protein in cell membranes that facilitates the rapid diffusion of water across the membrane.
3. Isotonic
A solution with the same solute concentration as the cell’s cytoplasm; no net water movement across the cell membrane.
4. Hypotonic
A solution with a lower solute concentration than the cell’s cytoplasm; water enters the cell (may cause it to swell).
5. Hypertonic
A solution with a higher solute concentration than the cell’s cytoplasm; water leaves the cell (may cause it to shrink).
6. Facilitated Diffusion
Passive transport of molecules (e.g., ions, large polar molecules) across a membrane via transport proteins, down their concentration gradient (no energy required).
7. Diffusion
The passive movement of particles (atoms, molecules, ions) from an area of high concentration to low concentration, driven by random thermal motion.
8. Osmotic Pressure
The pressure required to stop the net flow of water across a semipermeable membrane in osmosis; depends on solute concentration.
9. Active Transport
The movement of molecules across a cell membrane from low to high concentration, requiring energy (e.g., ATP) and transport proteins.
10. Passive Transport
The movement of molecules across a cell membrane without energy input, driven by concentration gradients (e.g., diffusion, osmosis, facilitated diffusion).
11. Cell Membrane
A semipermeable lipid bilayer (with embedded proteins) surrounding the cell, controlling the entry/exit of substances.
12. Selectively Permeable
A property of membranes (like the cell membrane) that allows some substances to pass through while restricting others, based on size, charge, or solubility.
These definitions align with concepts in Biology (subfield: Cell Biology), focusing on cellular transport and membrane function.
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To solve this, we'll define each vocabulary term related to cell biology (a subfield of Biology, Natural Science):
1. Homeostasis
The ability of an organism or cell to maintain a stable internal environment despite external changes.
2. Aquaporin
A channel protein in cell membranes that facilitates the rapid diffusion of water across the membrane.
3. Isotonic
A solution with the same solute concentration as the cell’s cytoplasm; no net water movement across the cell membrane.
4. Hypotonic
A solution with a lower solute concentration than the cell’s cytoplasm; water enters the cell (may cause it to swell).
5. Hypertonic
A solution with a higher solute concentration than the cell’s cytoplasm; water leaves the cell (may cause it to shrink).
6. Facilitated Diffusion
Passive transport of molecules (e.g., ions, large polar molecules) across a membrane via transport proteins, down their concentration gradient (no energy required).
7. Diffusion
The passive movement of particles (atoms, molecules, ions) from an area of high concentration to low concentration, driven by random thermal motion.
8. Osmotic Pressure
The pressure required to stop the net flow of water across a semipermeable membrane in osmosis; depends on solute concentration.
9. Active Transport
The movement of molecules across a cell membrane from low to high concentration, requiring energy (e.g., ATP) and transport proteins.
10. Passive Transport
The movement of molecules across a cell membrane without energy input, driven by concentration gradients (e.g., diffusion, osmosis, facilitated diffusion).
11. Cell Membrane
A semipermeable lipid bilayer (with embedded proteins) surrounding the cell, controlling the entry/exit of substances.
12. Selectively Permeable
A property of membranes (like the cell membrane) that allows some substances to pass through while restricting others, based on size, charge, or solubility.
These definitions align with concepts in Biology (subfield: Cell Biology), focusing on cellular transport and membrane function.