Podcast
Questions and Answers
What is the primary function of active transport?
What is the primary function of active transport?
- Transporting oxygen into the cell
- Moving molecules from high to low concentration
- Equalizing concentrations inside and outside the cell
- Moving molecules from low to high concentration (correct)
Which molecule provides the energy required for active transport?
Which molecule provides the energy required for active transport?
- Glucose
- ATP (correct)
- ADP
- NADH
What is the role of carrier proteins in active transport?
What is the role of carrier proteins in active transport?
- To facilitate movement of molecules with the concentration gradient
- To actively move molecules against the concentration gradient (correct)
- To provide structural support to the cell membrane
- To break down ATP for energy
In the sodium-potassium pump, which ion is pumped into the cell?
In the sodium-potassium pump, which ion is pumped into the cell?
Why is the sodium-potassium pump critical for nerve cells?
Why is the sodium-potassium pump critical for nerve cells?
What is the primary force responsible for pushing small molecules across a semi-permeable membrane in the filtration process?
What is the primary force responsible for pushing small molecules across a semi-permeable membrane in the filtration process?
Which type of molecules are unable to pass through the semi-permeable membrane during the filtration process?
Which type of molecules are unable to pass through the semi-permeable membrane during the filtration process?
In the context of filtration, what role does the semi-permeable membrane play?
In the context of filtration, what role does the semi-permeable membrane play?
What would happen if blood pressure were insufficient for the filtration process?
What would happen if blood pressure were insufficient for the filtration process?
During filtration, why are large molecules like proteins retained in the bloodstream?
During filtration, why are large molecules like proteins retained in the bloodstream?
What happens to guard cells during the daytime?
What happens to guard cells during the daytime?
What is the primary mechanism that causes guard cells to become flaccid at night?
What is the primary mechanism that causes guard cells to become flaccid at night?
How do semi-permeable membranes function in water-treatment technologies?
How do semi-permeable membranes function in water-treatment technologies?
Why do guard cells become hypertonic during the day?
Why do guard cells become hypertonic during the day?
What property of semi-permeable membranes allows them to separate bacteria from solutions?
What property of semi-permeable membranes allows them to separate bacteria from solutions?
Flashcards
Stomata
Stomata
Tiny openings in the epidermis of a leaf, surrounded by guard cells that control their opening and closing.
Guard Cells
Guard Cells
Specialized cells flanking stomata, controlling their opening and closing.
Osmosis
Osmosis
The movement of water across a selectively permeable membrane from a region of high water concentration to a region of low water concentration.
Semi-permeable membrane
Semi-permeable membrane
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Reverse Osmosis
Reverse Osmosis
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Filtration
Filtration
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Blood pressure
Blood pressure
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Hydrostatic pressure
Hydrostatic pressure
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Filtration in the body
Filtration in the body
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Active Transport
Active Transport
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Carrier Proteins
Carrier Proteins
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Sodium-Potassium Pump
Sodium-Potassium Pump
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ATP (Adenosine Triphosphate)
ATP (Adenosine Triphosphate)
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Concentration Gradient
Concentration Gradient
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