tour of the cell
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What do Eukaryotic cells internal membranes do? | They compartmentalize their functions
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| What is the basic structural and functional unit of every organism ? | Prokaryotic or eukaryotic
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| What are the characteristics of Prokaryotes? | - Prokaryotic cells have no nucleus
- DNA is an unbound region called the nucleoid
- They lack membrane-bound organelles
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| What are the characteristics of Eukaryotes? | - They have DNA in a nucleus that is bounded by a membranous nuclear envelope
- Have membrane-bound organelles
- Larger than prokaryotic cells
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| Where are the eukaryotic cell's genetic instructions housed and carried out? | Housed in the nucleus and carried out by the ribosomes
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| What are Ribosomes? | Particles made of ribosomal RNA and protein
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| How do Ribosomes carry out protein synthesis? | In two ways:
- In the cytosol (free ribosome )
- On the outside of the endoplasmic reticulum (ER) or the nuclear envelope (ribosomes)
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| What does the endomembrane system regulate and perform? | regulates protein traffic and performs metabolic functions in the cell
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| What does the endoplasmic reticulum (ER) acoount for? | accounts for more than half of the total membrane in many eukaryotic cells
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| What are the two types of ER? | - smooth ER, which lacks ribosomes
- rough ER, with ribosomes studding its surface
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| Functions of Smooth ER? | - creates lipids
- breaks down carbohydrates
- stores calcium
- detoxfies poison
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| Functions of Rough ER? | - has bound ribosomes
- produces proteins and membranes, which are distributed by transport vesicles
- membrane factory of the cell
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| What is the Golgi Apparatus? | It is the shipping and receiving center
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| Functions of Golgi Apparatus? | - Modifies products of ER
- Manufacturers certain macromolecules
- Sorts and packages materials into transport vesicles
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| What are Lysosomes? | Digestive compartments
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| What are functions of Lysosomes? | - hydrolyze proteins, fats, polysaccharides, and nucleic acids
- use enzymes to recycle organelles and macromolecules
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| What are Vacuoles? | Diverse Maintenance Compartments
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| What is Mitochondria? | change energy from one form to another
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| What is the cytoskeleton? | a network of fibers extending throughout the cytoplasm
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| Functions of cytoskeleton? | - helps support the cell and maintain its shape
- interacts with motor proteins to produce motility
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Created by:
young kodak
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