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Cell Parts

Cell Parts and Processes

located in nucleus; strands containing genetic material that directs functions of cell chromatin
located in nucleus; where ribosomes are made nucleolus
region between cell membrane and nucleus; contains organelles cytoplasm
tiny structures located in cytoplasm that carry out specific functions; include mitochondria, lysosomes, and vacuoles etc. organelles
produce energy for the cell; think power plant "mighty" mitochondria
looks like a maze of passageways; used to carry proteins and other materials; think city roads/sidewalks endoplasmic reticulum or E.R.
small,dark grainlike bodies; protein producing "factories" ribosomes
flattened collection of sacs and tubes; receive newly formed materials, package, and then distribute them to other cell parts; think mail room Golgi bodies
storage areas (food, water, waste) vacuoles
cell's clean-up crew lysosomes
found in plant and bacteria cells; tough, flexible layer that protects and supports cell cell wall
plant cell structure; green structures floating in cytoplasm capture sun's energy for photosynthesis chloroplasts
separates cell from its environment; helps to control substances that enter and leave cell cell membrane
controls activities of cell; contains chromatin and the nucleolus nucleus
process by which molecules move from an area of higher concentration to lower concentration diffusion
the movement of materials througha cell membrane without using cellular energy passive transport
2 examples of passive transport diffusion and osmosis (diffusion of water)
2 examples of active transport use of transport proteins and engulfing (how amoebas eat)
2 examples of substances that enter/leave a cell through passive transport water, oxygen, carbon dioxide
2 examples of substances that enter/leave a cell through active transport sodium, calcium, potassium
the smaller the cell, the _ the surface area to volume ratio smaller
membrane that allows some but not all substances pass through semi-permeable
true or false: molecules are always moving true
why cells are small smaller cells have a higher surface area to volume ratio which allows substances to enter/leave the cell quickly and efficiently; this is necessary for the cell to survive
compare/contrast osmosis and diffusion both are forms of passive transport; diffusion is the passive transport of any molecule across a selectively permeable membrane; osmosis is the passive transport of WATER molecules across selectively permeable membrane
Created by: mfarleigh