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23 Cards in this Set

  • Front
  • Back

osmosis

the movement of water molecules through a selectively permeable membrane

diffusion

the movement of molecules from a higher concentration to a lower concentration

cell theory

a scientific theory which describes the properties of cells

cell membrane

holds contents of cell in place and acts like a gatekeeper by controlling what enters and leaves cell

endoplasmic reticulum

carries materials through cytoplasm



rough: ribosomes


smooth: no ribosomes

Golgi apparatus

stores protein and puts them into packages

lysosomes

formed by Golgi to patrol and clean cytoplasm, contains proteins used to break down large molecules

mitochondrion

power plant of cell; provides energy

ribosome

uses info from nucleus and molecules from cytoplasm to produce protein

nucleus

control centre; directs all cell activities

cytoplasm

a watery fluid that contains everything inside cell membrane

vacuole

used to store water and nutrients, also to move out waste and excess water out of cell

nucleolus

makes ribosomal subunits from protein and ribosomal

chromosomes

contains DNA info that holds construction plans of cell

flagellum/cilia

a whip like tail that helps cell move

cell wall

protects and supports plant cell


(plant)

chloroplast

creates chlorophyll which helps make cell food


(plant)

prokaryotic cells

one-celled organisms (eg. bacteria); when the nucleus isn't surrounded by a membrane

eukaryotic cells

plant/animal cells; cells with a nuclear membrane

turgor pressure

the pressure created inside plant cells when water molecules enter cell by osmosis; water fills vacuoles & cytoplasm, causing them to swell up and push against cell wall

concentration of solute molecules outside cell is equal to concentration of solute molecule inside cell


• water molecules balanced inside and outside cell


• size & shape remain same

concentration of solutes outside cell is less than found inside cell.


• water molecules greater outside than inside cell


• move water moving in


• cell expands

Front (Term)

concentration of solutes outside cell is greater than found inside cell


• water is greater inside cell than outside


• water moving out


• cell decreases


• dying