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36 Cards in this Set

  • Front
  • Back
microscope
instrument that makes small objects look larger
ribosomes
produce proteins
cells
basic unit of structure & function in living things
nucleolus
where ribosomes are made
cell theory
1. all living things are composed of cells
2. cells are basic unit of structure & function in living things
3. all cells come from other cells
mitochondria
where most energy is produced
chloroplasts
capture sunlight's energy and use it to produce food for cell
2 kinds of nucleic acids
DNA & RNA
proteins
large organic molecules made of carbon, hydrogen, oxygen, and sometimes sulfer
resolution
ability to clearly distinguish individual parts of object
golgi bodies
send/recieve materials from one part of cell to another
nucleus
"brain" of cell; directs all activities
cell wall
rigid layer of nonliving material surrounding cells of plants and some other organisms
chromatin
contain genetic material
organic compounds
compounds w/ carbon
carbohydrate
energy rich organic compound made of carbon, oxygen, hydrogen
inorganic compounds
compounds w/out carbon
compound
two or more chemically combined elements
magnification
ability to make things look larger than they are
element
any substance that can't be broken down into simpler substances
selectively permeable
some substances can pass thru, some cant
cell membrane
inside cell wall; boundary seperating cell from enviornment
diffusion
process by which molecules move from area of higher concentration to area of lower concentration
amino acids
make protein molecules; 20 main ones (like alphabet letters & words)
osmosis
diffusion of water molecules thru selectively permeable membrane
endoplasmic reticulum
series of passageways that carry materials from one part of cell to another
diffusion
process by which molecules move from area of higher concentration to area of lower concentration
organelles
smaller structures inside cells that carry out specific functions w/in cell
nucleic acids
large organic molecules made of carbon, oxygen, hydrogen, nitrogen, and phosphorus; contain instruction cell needs to carry out daily functions of life
active transport
movement of materials thru a cell membrane using energy
lysosome
contain chemicals to break down large food particles into smaller ones
atom
smallest unit of an element
molecule
smallest unit of most compounds
lipid
energy rich organic compounds made of carbon, hydrogen, oxygen w/ more energy than carbs
passive transport
movement of materials thru cell membrane w/out using energy
vacuole
water filled sac where waste/food is stored in cell