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Under electron microscope, the endoplasmic reticulum will have a railway track appearance due to its:
Which organelle contains the DNA, the chemical basis of genes which govern all the functions of the cell?
Which organelle is a network of interconnecting membranes enclosing channels or cisternae, continuous from the outer nuclear envelope to the outer plasma membrane?
Which organelle is the most prominent organelle of the cell and contains the DNA?
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Which organelle is responsible for producing ATP, the energy currency of the cell?
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Which organelle is involved in modifying, sorting, and packaging proteins and lipids for storage or transport out of the cell?
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What is the main function of the Golgi apparatus?
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Which organelle is referred to as the powerhouse of the cell?
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What is the diameter range of mitochondria?
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Which statement about lysosomes is true?
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What do lysosomes fuse with to form the secondary lysosome or digestive vacuole?
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What is the optimum pH for lysosomal enzymes?
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What is the main function of the plasma membrane?
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What enzymes are seen on the outer part of the cell membrane, making them ecto-enzymes?
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Study Notes
Cellular Structures and Organelles
- Endoplasmic reticulum appears like a railway track under an electron microscope due to its structure.
Nucleus and DNA
- The nucleus contains the DNA, which is the chemical basis of genes that govern all cell functions.
Endoplasmic Reticulum
- Endoplasmic reticulum is a network of interconnecting membranes enclosing channels or cisternae, continuous from the outer nuclear envelope to the outer plasma membrane.
Mitochondria
- Mitochondria are the powerhouse of the cell, responsible for producing ATP, the energy currency of the cell.
- The diameter range of mitochondria varies.
Golgi Apparatus
- The main function of the Golgi apparatus is to modify, sort, and package proteins and lipids for storage or transport out of the cell.
Lysosomes
- Lysosomes fuse with phagosomes to form the secondary lysosome or digestive vacuole.
- The optimum pH for lysosomal enzymes is acidic.
- Lysosomes contain digestive enzymes that break down and recycle cellular waste and foreign substances.
Plasma Membrane
- The main function of the plasma membrane is to regulate what enters and leaves the cell.
- Ecto-enzymes are present on the outer part of the cell membrane.
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Description
Test your knowledge of subcellular organelles and cell membranes with this quiz. Questions cover topics such as nucleus, endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria, plasma membrane, and transport mechanisms.
