Ch. 8 Test Flashcards
Cell Theory
all things are made of cells, cells are the basic unit of life, and new cells are produced from existing cells
prokaryotes
small, no nucleus, no organells, less complex, single celled, ancient life form
eukaryotes
has a nucleus, larger, more complex, all multicellular are eukaryotes can be singled
cell membrane
what enters and leaves, protects, lipid bilayer, has two layers
nucleus
contains genetic material
cytoplasm
gelatinous liquid that fills the inside of a cell
Rough Er
helps w protein manufacturing
smooth er
builds membranes, breakdown toxins creates lipids
golgi aparatus
packages proteins for transport or use within cell
vesicles
transport of substances in/out of cell
lysosome
breaks down lipids, carbohydrates, and proteins, digests particles inside cell
vacuoles
storage
mitochondria
powerhouse
chloroplasts
capture energy from sunlight and convert into energy
centrioles
part of cytoskeleton, only in animals cells helps w cell division
cytoskeleton
maintains shape of cell and allows for movement
Plant Cells 3 Cs
Cell wall, chloroplasts, vacuole
Cell Membranes
lipid bilayer, fluid moves, self repairs, semi permeable
passive transport
no energy is required, the movement of molecules from high-low, continues to move until equilibrium
simple diffusion
movement directly through phospholipid bilayer, non polar, small, neutral
osmosis
movement of water through an aquaporin high-low concentration, no energy
protein channels
movement of other molecules, large, polar, ions
hypertonic
high solute concentration outside of cell, osmosis out, cell will shrivel
isotonic
equal solute, osmosis in and out of cell, same
hypotonic
low solute, osmosis in, cell will swell
active transport
going against the concentration gradient, low to high