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Questions and Answers
What is the primary function of the mitochondria in a cell?
What is the primary function of the mitochondria in a cell?
- Regulation of cell growth and reproduction
- Storage of genetic material
- Protein synthesis
- Generation of energy for the cell through cellular respiration (correct)
What is the main function of the ribosomes?
What is the main function of the ribosomes?
- Modification and packaging of proteins and lipids
- Breakdown and recycling of cellular waste
- Generation of energy for the cell
- Site of protein synthesis (correct)
What is the primary function of the lysosomes?
What is the primary function of the lysosomes?
- Regulation of cell growth and reproduction
- Generation of energy for the cell
- Breakdown and recycling of cellular waste (correct)
- Protein synthesis
What is the function of the centrioles?
What is the function of the centrioles?
What is the function of the Golgi apparatus?
What is the function of the Golgi apparatus?
What is the primary function of the cytoskeleton?
What is the primary function of the cytoskeleton?
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Study Notes
Structure and Components
- Plasma Membrane: Semi-permeable membrane that surrounds the cell, regulating what enters and leaves.
- Cytoplasm: Gel-like substance inside the cell membrane, where metabolic processes occur.
- Cytoskeleton: Network of protein filaments that provides structural support, shape, and movement.
Organelles
- Nucleus: Contains genetic material (DNA), regulates cell growth and reproduction.
- Mitochondria: Generates energy for the cell through cellular respiration.
- Endoplasmic Reticulum (ER): Involved in protein synthesis, transport, and storage.
- Ribosomes: Site of protein synthesis.
- Golgi Apparatus: Modifies and packages proteins and lipids for transport.
- Lysosomes: Contains digestive enzymes, breaks down and recycles cellular waste.
- Peroxisomes: Involved in fatty acid breakdown and amino acid metabolism.
- Centrioles: Involved in formation of cilia, flagella, and spindle fibers.
Functions
- Metabolism: Energy production, protein synthesis, and nutrient breakdown.
- Growth and Reproduction: Cell division, DNA replication, and protein synthesis.
- Response to Stimuli: Cellular signaling, response to hormones, and environmental stimuli.
- Waste Management: Breakdown and recycling of cellular waste.
Unique Features
- Centrioles: Present in animal cells, but not in plant cells.
- Lysosomes: More prominent in animal cells than in plant cells.
- Cilia and Flagella: Present in some animal cells, involved in movement and sensation.
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