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Questions and Answers
What is the main function of the plasma membrane?
What is the main function of the plasma membrane?
- To regulate what enters and exits the cell (correct)
- To provide structural support for the cell
- To store genetic information
- To control the cell's energy production
Which structure is responsible for producing ribosomes?
Which structure is responsible for producing ribosomes?
- Nucleus
- Nucleolus (correct)
- Endoplasmic reticulum
- Golgi apparatus
What is the primary function of the mitochondria?
What is the primary function of the mitochondria?
- ATP production through cellular respiration (correct)
- Transport of materials within the cell
- Protein synthesis
- Packaging of proteins for export
Which of the following is TRUE about the rough endoplasmic reticulum (RER)?
Which of the following is TRUE about the rough endoplasmic reticulum (RER)?
Which organelle is responsible for the synthesis of lipids and detoxification of harmful substances?
Which organelle is responsible for the synthesis of lipids and detoxification of harmful substances?
Which of the following organelles is known as the 'digestive system' of the cell?
Which of the following organelles is known as the 'digestive system' of the cell?
What is the function of microtubules in the cytoskeleton?
What is the function of microtubules in the cytoskeleton?
Which type of cell junction prevents substances from leaking between cells?
Which type of cell junction prevents substances from leaking between cells?
Which of the following processes is responsible for the movement of water across a semipermeable membrane from a region of high water concentration to a region of low water concentration?
Which of the following processes is responsible for the movement of water across a semipermeable membrane from a region of high water concentration to a region of low water concentration?
Which of the following processes is NOT a type of passive transport?
Which of the following processes is NOT a type of passive transport?
Which of the following cell structures is responsible for protein synthesis?
Which of the following cell structures is responsible for protein synthesis?
Which of the following types of cell junctions provides a strong adhesion between cells, preventing them from being pulled apart?
Which of the following types of cell junctions provides a strong adhesion between cells, preventing them from being pulled apart?
Which of the following statements is TRUE about the sodium-potassium pump?
Which of the following statements is TRUE about the sodium-potassium pump?
Flashcards
Plasma Membrane
Plasma Membrane
Regulates what enters and exits the cell.
Nucleolus
Nucleolus
Structure responsible for producing ribosomes.
Smooth Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Synthesis of lipids and detoxification of harmful substances.
Mitochondria
Mitochondria
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Ribosomes
Ribosomes
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Golgi Apparatus
Golgi Apparatus
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Lysosome
Lysosome
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Tight Junctions
Tight Junctions
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Osmosis
Osmosis
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Active Transport
Active Transport
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Endocytosis
Endocytosis
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Sodium-Potassium Pump
Sodium-Potassium Pump
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Gap Junctions
Gap Junctions
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Study Notes
Cell Structure and Function
- Plasma membrane: Regulates what enters and exits the cell.
- Nucleolus: Responsible for ribosome production.
- Smooth endoplasmic reticulum (SER): Synthesizes lipids and detoxifies harmful substances.
- Mitochondria: Produce ATP through cellular respiration.
- Ribosomes: Involved in protein synthesis.
- Rough endoplasmic reticulum (RER): Involved in protein synthesis.
- Golgi apparatus: Packages and ships proteins.
- Lysosome: The cell's "digestive system", breaking down substances.
- Tight junctions: Prevent substances from leaking between cells.
- Phospholipid bilayer: Composed of two layers, with hydrophilic heads and hydrophobic tails; regulates what enters/exits the cell.
- Peroxisomes: Breakdown fatty acids and detoxify substances.
- Microtubules: Provide support, assist in cell division and intracellular transport.
- Cilia: Move substances across the cell surface.
- Osmosis: Movement of water across a semipermeable membrane.
- Active transport: Requires energy (ATP) to move substances against their concentration gradient.
- Endocytosis: Engulfing of extracellular material by the cell membrane.
- Sodium-potassium pump: Moves potassium into and sodium out of the cell; important for generating electrical signals.
- Ribosomes: Composed of RNA and protein.
- Diffusion: A type of passive transport, movement of molecules from high to low concentration.
- Passive transport: Processes like diffusion and osmosis that don't require energy.
- Gap junctions: Allow direct communication between adjacent cells.
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