Cell Flash Cards
Terms
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- What is a cell wall?
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⬢ Is a framework for the cell.
⬢ Located outside cell membrane
⬢ Primary-cellulose
⬢ Secondary is made up of cellulose and lignin (woody stems)
⬢ Pectin (glue) holds all cells together - What is the chloroplast?
- ⬢ Tap light for photosynthesis
- What is the cell membrane?
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⬢ Separates cell from surrounding, regulates what enters and leaves cell, protects and supports cell
Structure
⬢ Lipid bylayer
⬢ Surface protein
⬢ Channel proteins
⬢ Protein pumps
⬢ Carbohydrates for ID (indentify) molecules (allow to pass through or not) - What are the centrioles?
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⬢ 2 bundles of microtubules
⬢ Right angles to each other
⬢ Are near the nucleus
⬢ Used in cell division - What is the cytoplasm?
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Jelly-like material, between nucleus and cell membrane, contains organelles
To hold organelles together, gives cell shape - What is the Cytoskeleton?
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• Nucri tybykes’
o Support and shape
o Move organelles
o Form centriole and spindle - What is the Endoplasmic Reticulum, smooth?
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⬢ Transports materials
⬢ Smooth ER stores enzymes and chemicals - What it the Rough ER?
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⬢ Transports materials
⬢ Rough ER involved in protein synthesis - What is the Golgi?
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⬢ Made up of smooth ER
⬢ Protein modifier
⬢ Flattened membranes
⬢ Collect, modify, package, distribute molecules
⬢ Makes lysosomes - What is the lysosome?
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up crew
⬢ Contains chemicals and enzymes for digestion
⬢ Made by Golgi body - What is the mitochondria?
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⬢ Provides power for cell,
⬢ 2 layer membrane
⬢ cellular respiration-produces energy - What is the nucleolus? Where is it located?
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⬢ Produces RNA and protein and ribosomes
In the nucleus - What is the nucleus?
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⬢ Hereditary information
⬢ Eukaryotes have a nucleus
o Plant and animal cells
⬢ Prokaryotes do not
o Bacteria - What is a ribosome?
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• “protein factoryâ€
• Produces RNA and protein
• Floats in the membrane or free
• Produced in Nucleolus - What is a vacuole?
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⬢ Storage tank
⬢ Fluid filled sac
⬢ Store water (pinocytosis), food, minerals, salts
⬢ Contractile vacuoles maintain water balance in paramecia
o When it is filled with water, it becomes pressurized (Turgor pressure), thus holding up the plant stem.
⬢ Formed on the cell membrane - What is chromatin?
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⬢ Consists of DNA and protein
⬢ Indistinct mass
⬢ Condenses into chromosomes during cell division - What is the nucleoplasm?
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⬢ Jelly-like material inside nuclear membrane
⬢ Has DNARNA through pores to tell cell
⬢ Mostly water - What is the nuclear membrane?
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⬢ Envelope the nucleus
⬢ Double layer
⬢ Has pores - What are organelles?
- ⬢ Basic unit of Life function
- Who was Robert Hooke and what did he do?
- ⬢ Came up with the word cellcork cell
- Who was van Leewenhoik? What did he do?
- ⬢ One of the first people to use a microscope to study nature
- Who was virchow? What did he do?
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He came up with the cell theory
o All living things are composed of cells
o Calls are the basic units of structures and function in living things
o New cells are produced from existing cells - Wha was Scleiden? What did he do?
- All plants are made of cells
- Who was Schwann and what did he do?
- ⬢ Concluded that all animals were made of cells
- What is a prokaryote cell?
- An animal or plant cell that has multiple organelles
- What is a eukaryote cell?
- A bacteria or single-celled organism.
- What is movement in the cell carried out by?
- By the microfilaments and microtubules.
- What are microtubules and microfilaments?
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Microtubules-Hollow protein tubes
Support and shape
Move organelles
Form centriole & spindle
Form cilia & flagella
Microfilaments-Cell movement & support
Cytoplasmic streaming
In muscle cells, contract - What are plastids?
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Leucoplasts store starch
Chromoplasts store pigment
Chloroplasts trap light for photosynthesis