science final reveiw/random science2
Terms
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- parallel circuit
- circuit in which electric current can follow more than one path
- electric circuit
- path that electricity follows
- mitochondria
- organelles in which energy is released from food
- physical change
- a change that does not produce a new substance
- conductor
- materials that allow electric charges to flow easily
- cell wall
- organelle made of cellulose and gives rigid shape to the cell
- insulators
- materials that prevent electricity from flowing
- fetus
- last stage of human development;the last trimester
- nucleus
- controls all cell activity
- cell membrane
- holds cells together; lets substances pass in and out
- nerve impulse
- to or from the brain along the spinal cord
- vacuoles
- spaces in the cytoplasm where food and chemicals are stored
- chloroplasts
- contain chlorophyll, a substance that enables plants to store solar energy
- electricity
- form of energy caused by moving electrons
- cytoplasm
- watery gel inside the cell
- zygote
- clump of cells;first stage of development
- law of magnetic attraction
- opposite poles attract and like poles repel
- kinetic energy
- the energy of motion
- magnetism
- force of attraction or repulsion
- chemical change
- a change that forms a new substance
- sensory neurons
- go from sense organs to the brain
- motor neurons
- impulse sent to the brain to the spinal cord to the muscles
- series circuit
- circuit in which electric current only follows one path
- compound
- substance made up of two or more elements that are chemically combined
- ribosomes
- organelle that makes proteins
- mitosis
- process by which cells divide to form new cells