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39 Cards in this Set
- Front
- Back
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What is cell theory ?
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All living things are composed of cells. All cells come from OTHER cells. |
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Does SEM Scanning Electron Microscopes study the detailed architecture ? yes / no
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YES, SEM studies the detailed architecture. |
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Transmission electron microscopes study the deails of _______ through thin sections.
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Transmission electron microscopes study the deails of looking through thin sections.
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All other forms of life are composed of eu________ cells.
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....forms of life are composed of eukaryotic cells.
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Eukaryotic cells have a
I. _______ bound nucleus ii. number of OTHER organelles |
I. membrane bound nucleus ii. number of OTHER organelles |
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What are 2 prokaryotic cells ?
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Bacteria and Archaea |
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__________ ____ are structurally simpler than eukaryotic cells. |
Prokaryotic cells are structurally simpler than eukaryotic cells. |
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Prokaryotic cells are structurally simpler than _____________ ______.
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Prokaryotic cells are structurally simpler than eukaryotic cells.
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The surface of prokaryotic cells may be ___________ by a chemically complex cell wall.
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The surface of prokaryotic cells may be surrounded by a chemically complex cell wall.
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The surface of prokaryotic cells may have longer projections called ______ that may propel the cell through its liquid environment.
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The surface of prokaryotic cells may have longer projections called flagella that may propel the cell through its liquid environment.
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Membrane proteins are either __________ to the membrane surface ________ in the phospholipid bilayer |
Membrane proteins are either attached to the membrane surface embedded in the phospholipid bilayer |
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Cilia and flagella move when ___________ bend |
Microtumbules |
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Other proteins serve as ______ using energy to actively transport molecules into or out of the cell. |
Other proteins serve as pumps using energy to actively transport molecules into or out of the cell. |
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A __________ longer than cilia propels a cell by a undulating whiplike motion. |
Flagellum |
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Cilia and flagella move when ___________ bend |
Microtumbules |
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A __________ longer than cilia propels a cell by a undulating whiplike motion. |
Flagellum |
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A cytoskeleton is composed of three kinds of fibers |
1. Microfilments 2. Intermediate filaments 3. Microtubles |
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Cilia and flagella move when ___________ bend |
Microtumbules |
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A __________ longer than cilia propels a cell by a undulating whiplike motion. |
Flagellum |
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A cytoskeleton is composed of three kinds of fibers |
1. Microfilments 2. Intermediate filaments 3. Microtubles |
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1. Microfilments 2. Intermediate filaments 3. Microtubles |
1. Microfilments - support the cells shape and are involved in motility 2. Intermediate filaments- reinforce cell shape and anchor organelles 3. Microtubles- Give the cell rigidity and act as tracks for organelle movement |
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Cilia and flagella move when ___________ bend |
Microtumbules |
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A __________ longer than cilia propels a cell by a undulating whiplike motion. |
Flagellum |
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A cytoskeleton is composed of three kinds of fibers |
1. Microfilments 2. Intermediate filaments 3. Microtubles |
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1. Microfilments 2. Intermediate filaments 3. Microtubles |
1. Microfilments - support the cells shape and are involved in motility 2. Intermediate filaments- reinforce cell shape and anchor organelles 3. Microtubles- Give the cell rigidity and act as tracks for organelle movement |
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Animal cells synthesize and secrete an elaborate extra_________ matrix. |
Animal cells synthesize and secrete an elaborate extracellular matrix - ECM |
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Animal cells synthesize and secrete an elaborate extra_________ matrix a. helps hold cells together in ______ b. Protects and supports the _____ membrane. |
Animal cells synthesize and secrete an elaborate extracellular matrix a. helps hold cells together in tissues b. Protects and supports the plasma membrane. |
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Plant but not animal cells have a. A _____ cell wall b. Cloroplasis c. A central _______ |
Plant but not animal cells have a. A rigid cell wall b. Cloroplasis c. A central vacuole |
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Tight junctions prevent leakage of __________ fluid across a layer of epithelial cells. |
Tight junctions prevent leakage of exocellular fluid across a layer of epithelial cells.
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Anchoring junctions _____ cells together into epithelial cells.
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Anchoring junctions fasten cells together into epithelial cells.
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Gap junctions are channels that allow ___________ to flow between cells. |
Gap junctions are channels that allow molecules to flow between cells. |
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Cells were first observed by _______ Hooke in 1665.
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Cells were first observed by Robert Hooke in 1665.
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Who worked with a more van refined lense ?
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Anton van Leeuwenhoek |
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SEM - S---------G TEM - T---------------N |
Scanning Transmission |
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What is resolution ?
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Measure of the clarity of an image.
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There are 2 kinds of endoplasmic reticulum - smooth and rough Smooth - Lacks ________ ribosomes Rough - Possess ________ on the outer surface of their membranes |
There are 2 kinds of endoplasmic reticulum - smooth and rough Smooth - Lacks attached ribosomes Rough - Possess ribosomes on the outer surface of their membranes |
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Even though they are physically interconnected ________ and _____ ER differ in structure and function.
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SMOOTH Rough
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What does SMOOTH ER produce ?
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SMOOTH ER produces enzymes important in the synthesis of lipids, oils, phospholipids and steroids.
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What are vacuoles like |
Vacuoles are a storage for nutrients and waste |
