Podcast
Questions and Answers
Which organelle is known as the 'Powerhouse of the cell'?
Which organelle is known as the 'Powerhouse of the cell'?
- Lysosome
- Golgi Apparatus
- Endoplasmic Reticulum
- Mitochondria (correct)
Where does the accumulation and concentration of secretory products of cell synthesis occur?
Where does the accumulation and concentration of secretory products of cell synthesis occur?
- Mitochondria
- Golgi Apparatus (correct)
- Lysosome
- Endoplasmic Reticulum
Which organelle contains hydrolytic enzymes to break down proteins and waste materials?
Which organelle contains hydrolytic enzymes to break down proteins and waste materials?
- Lysosome (correct)
- Mitochondria
- Golgi Apparatus
- Endoplasmic Reticulum
Which organelle is made up of various tubules and cisternae?
Which organelle is made up of various tubules and cisternae?
Where does oxidative metabolism occur in a cell?
Where does oxidative metabolism occur in a cell?
Which organelle contains an array of parallel membranes and vesicles without ribosomes?
Which organelle contains an array of parallel membranes and vesicles without ribosomes?
Study Notes
Golgi Apparatus
- Dense aggregations of RNA and protein usually attached to the ER
- Specialized portion of the endoplasmic reticulum, includes an array of parallel membranes and vesicles without ribosomes
- Made up of various tubules and cisternae
- Site of accumulation and concentration of secretory products of cell synthesis
- Area where substances produced from the ER are modified, concentrated, and prepared for either transport or to be made into vesicles for secretion
Mitochondria
- "Powerhouse of the cell"
- Slender rods or filaments enclosed by 2 membranes: outer membrane (smooth) and inner membrane (forms narrow folds to increase surface area)
- Where oxidative metabolism occurs
- Contains oxidative enzymes for breaking down glycogen and glucose into water and carbon dioxide
- Liberated energy is used to synthesize triphosphate (ATP)
Lysosome
- Contains hydrolytic enzymes that can break down proteins, deoxyribonucleic acids (DNA), and destroy/degade waste materials and foreign antigens
- White blood cells, which phagocytose antigens, have lysosomes as essential parts of their intracellular digestive system
- Can fuse with old organelles and cause them to be digested and recycled
- Produced from the Golgi apparatus and secreted into vesicles
- Responsible for recycling and defense of the cell
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Description
Learn about the Golgi apparatus, a specialized portion of the endoplasmic reticulum responsible for modifying, concentrating, and preparing cell products for transport or secretion. Explore its structure, function, and significance in cell biology.
