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18 Cards in this Set
- Front
- Back
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What is the plasma membrane composed of?
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phospholipids
proteins (between phospholipid layers) other molecules |
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What are the functions of the plasma membrane?
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*regulates when enters and leaves cell
*communicates thru receptor proteins *identifies itself with marker proteins *chemical reactions |
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Receptor Proteins...
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receive messages through chemicals
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Marker Proteins...
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determine "self" and "non-self"
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Cytoplasm...
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cytosol (liquid) - water, dissolved nutrients, enzymes, and other molecules
Organelles |
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Ribosomes
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sites of protein synthesis, tens of thousands in each cell
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Cytoskeleton provides
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shape
movement: in cell (like a railroad track) and out of cell (like a blob) |
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genetic disorder relating to cytoskeleton
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spherocytosis - RBCs balloon out and can't fit in the right places
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The nucleus is composed of...
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DNA and proteins (histones)
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A gene is
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the section of the DNA that contains instructions for a protein
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Locus
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the specific location on a chromosome
i.e. the locus for eye color |
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Allele
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alternate forms of the same gene
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functions of endoplasmic reticulum
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1- molecule modification
2- molecule synthesis 3- storage of substances and transport |
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vesicle
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transports within cells, usually solids
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vacuole
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transparts within cells, usually liquids
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the endoplasmic reticulum is..
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composed of folded membrane and most of its proteins are enzymes for chemical reactions
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the golgi body is
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stacks of elongated membrane sacs and has enzymes
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the golgi body's funtions are...
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1- molecule modification
2- molecule synthesis 3- storage and transport |
