25 terms

science cells

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cell theory
All living things are made of cells
structure and function
Cells come from cells
endosymbiont theory
cell wall
A rigid structure that surrounds the cell membrane and provides support to the cell
cell membrane
A cell structure that controls which substances can enter or leave the cell.
Nucleous
One group cells, it hold the cells DNA together.
nuclear membrane
surrounds the nucleus
Chromosomes
Bodies within the nucleus made in DNA and proteins called the histones
Nucleolus
Makes ribosomes
Cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended
Endoplasmic Reticulum
A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.
Ribosomes
Makes proteins
Mitochondria
powerhouse, take sugar, make energy
Golgi apparatus
A system of membranes that modifies and packages proteins for export by the cell
Vacuole
A sac inside a cell that acts as a storage area
Lysosomes
Uses chemicals to break down food and worn out cell parts
Chloroplast
An organelle found in plant and algae cells where photosynthesis occurs
Metabolism
All of the chemical reactions that occur within an organism
Exchange with the environment
cells need food, energy, get rid of waste and new proteins
Diffusion
high to low concentration
Osmosis
diffusion of water
small particles
passive transport, no energy, active
large particles
endocytosis and exocytosis
cell energy
need sugar, turn sugar into ATP
sun to cell
photosynthesis
cellular respiration
getting energy to food
Fermentation
no oxygen, alcohol