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17 Cards in this Set
- Front
- Back
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What are Prokaryotic Cells? |
bacteria and archaea have nonucleus, no organelles, do have ribosomes |
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What are Eukaryotic Cells? |
In eukaryotic cells the DNA is contained within thenucleus Animal cells, Plant cells, Fungi, Protists |
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Which Biological molecule is the main component of membranes? |
Phospholipids |
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Why are most cells small? |
The small size of cells is dictated by a physicalrelationship known as the surface-to-volumeratio |
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What's the function of the plasma membrane? |
Function: Maintain structure of the cell, regulate movement and substance into and out of the cells, provide recognition of the cell, provide communication between cells, stick cells together to form tissues and organs. |
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Whats the structure of the plasma membrane? |
-Phospholipid bi-layer -Cholestrol -Protiens -Glycolipidids -Glycoprotiens |
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What can pass freely through the membrane? |
-Hydrophobic compounds -Gases (CO2, O) -Very small uncharged molecules |
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What can NOT pass freely through the membrane? |
-Hydrophilic compounds -Ions & other charged compounds -Macromolecules (Complex carbohydrates, Large protiens, triglycerides) |
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What is passive transport? |
*Does not require energy Uses the concentration gradient |
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What is active transport? |
Requires energy, goes against the concentration gradient (Sugars, amino acids, & Ions) |
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What is simple diffusion? |
Molecules that can pass freely the membrane are controlled by concentration gradient |
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What is Facilitated diffusion? |
Aided by transport protein, & still controlled by the concentration gradient. |
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Can (Calcium) Ca2++ pass freely through the membrane? |
No |
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Can Glucose pass through the membrane freely? |
No |
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If a transport protein is used to move glucose using a concentration gradient this is called.... |
Facilitated Diffusion |
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What is phagocytosis? |
when cells transport large particles and cells (bateria) into the cell using vesicles. |
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What is Pinocytosis? |
When cells transport fluid into the cell using vesicles. |
