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52 Cards in this Set
- Front
- Back
differentiation/ determination |
when a stem cell specializes |
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metabolism |
term for the chemicals reaction in the body |
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anabolism |
builds larger molecules |
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catabolism |
breaks down large molecules |
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negative feedback |
turns off the stress |
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positive feedback |
intensifies stress |
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lipid bilayer |
phospholipid, cholesterol, glycolipid |
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phospholipids |
hydrophilic & hydrophobic-ampeiathic molecule-polar and non polar. |
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peripheral proteins |
support-may be involved in cell devision |
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cholesterol |
rigid molecules that provide support |
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ions |
can influence whenever something enters the cell-depending on its charge |
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permeability |
ability to get through cell |
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facilitated diffusion |
high to low with the help of integrated protein!! |
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active transport |
low to high |
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crenation |
rbc in a hypertonic solute looses water and shrinks |
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lysis |
rbc in a hypotonic solution gains water and bursts |
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endocytosis |
inside cyt |
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phagocytosis |
to eat cyt |
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pinocytosis |
to drink cyt |
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exocytosis |
go out cyt |
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transcytosis |
across cyt |
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chromatin |
spread out form of DNA and proteins-not visible-DNA usually chromatin |
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chromosomes |
condensed form of DNA-diploid cell |
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peroxisomes |
in liver-contains oxidases-detoxify alcohol |
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proteasome |
4 stacked rings of protein, break down old protein |
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mitochondria |
ctistae and matrix-produces ATP |
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actin |
thin filament |
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myosin |
thick filament |
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protein synthesis |
DNA code for proteins-cytoplasm |
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transcription |
occurs in nucleus-copies a gene form DNA to messager RNA |
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RNA polymerase |
scans DNA looking for promoter-advetisment |
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translation |
occurs in the cytoplasm-amino acids into proteins-according to the mRNA sequence of nucleotides-moving copy |
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mitosis |
i-p-m-a-t |
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meiosis |
2 sets of cell devision |
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contact inhibition |
cells in contact with other cells don't divide |
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carcinogens |
cigarettes |
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metastasize |
spreads cancer 2 parts of body |
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endocrine gland |
secrets hormones |
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exocrine glands |
secretes things onto body surface or into ducts unicellular-goblet cell multicellular many celled glands |
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merocrine gland |
products build up in cell-salivary glands |
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holocrine glands |
sebaceous oil glands-whole cell is sloughed off |
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mesenchyme |
adult conn develop from this |
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neuroglia |
glial cells |
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mucous membrane |
lines open cavities-has lamina propria under made of areolar |
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serous membrane |
lining closed cavities-secrete serous fluid that lubricates |
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cutaneous membrane |
skin |
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synovial membrane |
lines cavities of joints-areolar tissue-secrete synovial fluid |
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tight junction |
tight seal |
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adherent junction |
plaque on inside of cell membranes, tied together by glycoproteins-prevent epithelial cells from separating-space between |
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desmosomes |
plaque on inside of cell membrane-tied together by glycoproteins-attached to intermediate filament of cytoskeleton-skin cells in epidermis-button gap |
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hemidesmosomes |
anchor to underlying basement membrane-half button-glycoproteins |
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gap junction |
connexons-conect one cell to the next-cardiac muscle cells and some smooth muscle cells-improves speed of impulse |