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1. all organisms are made of 1 or more cell
2. cells are the fundamental function and structural unit of life
3. all cells come from pre-existing cells
first to use a microscope, named what he saw "cells" because they were like compartments
cell (plasma) membrane
selectively permeable membrane. thin layer that determines what goes in and out. phospholipid bi-layer.
cells expend energy to move molecules. low - high. proteins are involved. Na-K pump. uses ATP
small membrane sacs. transfer molecules in and out of cell. form by the cell membrane or some organelles inside
consists of DNA bound to a protein, when cell prepares to divide, fibers coil up as separate structures called chromosomes.
make proteins (on nucleus). made up of 2 subunits. types: bound (on ER, nucleus) and suspended (in cytoplasm)
main manufacturing and transportation facilities in the cell, maze of membranes. types: rough and smooth
close to nucleus. protein synthesis, continuous w/ nuclear membrane. has ribosomes on it. where lipid components of cell membrane are assembled. form vesicles where large molecules are transported to other cell parts
no ribosomes. continuous with rER, contains enzymes that make membrane lipids (phospholipids) and detox. of drugs. in liver cells, steroids, ovaries and testes
flattens sac. proteins reduced in the rER move to GA thru vesicles. modifies, sorts and packages proteins from ER for storage in cell or secretion outside cell
contains digestive enzymes that can break down macromolecules such as proteins, nucleic acids and polysaccharides. recycle cellular material and destroy non-functional organelles
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