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Questions and Answers
What is the process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one?
What is the process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one?
- Endocytosis
- Diffusion (correct)
- Active transport
- Facilitated diffusion
What is the pressure that goes outward onto the plant cell wall when water is taken with osmosis?
What is the pressure that goes outward onto the plant cell wall when water is taken with osmosis?
- Oncotic pressure
- Turgor pressure (correct)
- Hydrostatic pressure
- Plasmolysis
How do unicellular organisms primarily get their nutrients?
How do unicellular organisms primarily get their nutrients?
- Osmosis
- Photosynthesis
- Absorption through the cell membrane
- Eating other organisms (correct)
How do unicellular organisms exchange gas?
How do unicellular organisms exchange gas?
What process converts light energy into sugars in some unicellular organisms?
What process converts light energy into sugars in some unicellular organisms?
Flashcards
Solvent movement
Solvent movement
The process where solvent molecules move through a semipermeable membrane from a less concentrated solution to a more concentrated one.
Turgor pressure
Turgor pressure
The pressure that builds up inside a plant cell when water enters the cell via osmosis.
Unicellular nutrient intake
Unicellular nutrient intake
Unicellular organisms usually consume other organisms to gain nutrients.
Unicellular gas exchange
Unicellular gas exchange
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Unicellular energy
Unicellular energy
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Study Notes
Osmosis
- Osmosis is the movement of solvent molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
- This process aims to equalize solute concentrations on both sides of the membrane.
Turgor Pressure
- Turgor pressure is the outward pressure exerted on a plant cell wall due to the influx of water during osmosis.
- It helps maintain the cell's structural integrity and supports the plant's overall rigidity and posture.
Nutrient Acquisition in Unicellular Organisms
- Unicellular organisms primarily obtain nutrients through diffusion and active transport processes.
- They absorb dissolved nutrients from their surrounding environment directly through their cell membranes.
Gas Exchange in Unicellular Organisms
- Gas exchange in unicellular organisms occurs primarily via diffusion.
- Oxygen and carbon dioxide passively move across the cell membrane depending on concentration gradients.
Photosynthesis in Unicellular Organisms
- Some unicellular organisms, like algae and certain bacteria, convert light energy into sugars through photosynthesis.
- This process involves capturing light energy to transform carbon dioxide and water into glucose and oxygen.
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