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16 Cards in this Set
- Front
- Back
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Nucleus
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*bounded by nuclear envelop.
*has chromatin (threadlike matrix of DNA) *serves as the site for the separation of chromosomes during ce4ll division |
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nucleoli
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concentration of DNA in nucleus that is needed for ribosome production
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ribosome subunits
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60s and 40s -> 80s
larger the s value, heavier the product |
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endoplasmic reticulum
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stacks of flattened sacs that leads materials into nucleus.
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rough ER
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creates glycoproteins by attaching polysaccharide groups to polypeptide when ribosomes are present
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smooth ER
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synthesis of lipids and hormones, especially in cells that produce them for export.
EX) liver cells, smooth ER breaks down toxins, drugs |
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Golgi apparatus
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modifies and packages proteins and lipids into vesicles. the vesicles migrate to plama membrane to release the content
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lysosome
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vesicles made by golgi apparatus that contains digestive enzymes. It breaks down food, cellular debri, foreign invaders. NO lysosome in plants
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peroxisomes
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organelles that break down various substances, including the cell itself (apoptosis). O2 combines with H2 to form H2O2 (hydrogen peroxide). This converts to H20. peroxisome usually in liver, kidney cells and in photosynthesizing plant cells
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Mitochondria
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aerobic respiration. ATP is obtained from carbohydrates
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chloroplast
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photosynthesis. change sun light energy into carbohydrates
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microtubules
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biggest diameter. involved in making cell shape or movement. It is made of tubulin and found in spindle apparatus, flagella and cilia
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Intermediate filaments
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provide support for maintaining the shape of the cell
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microfilament
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made of protein actin and involved in cell motility. Found in muscle cells and phagocytes
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flagella
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long and few
in sperms made of microtubules arranged in 9+2 array (nine doublet ssurrounding a pair of microtubules) |
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cilia
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short and many
found in respiratory tract to sweep away debri made of microtubules arranged in 9+2 array (nine doublet ssurrounding a pair of microtubules) |
