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Ch 1 Intro to cells

6th grade introduction to cells

TermDefinition
Hooke discovered nonliving cells in cork; tiny rectangular rooms
Leeuwenhoek observed the 1st living cells
nucleus control center of the cell
element A substance that cannot be broken down into simpler elements
Enzymes speeds up chemical reactions
osmosis the diffusion of water molecules through a selectively permeable membrane
specialized cells Found only in many-celled organisms
magnification during electron microscope an electron beam creates an image
Invention of the microscope made it possible for people to discover and learn about cells
nucleic acids DNA belongs to the group of organic compounds cells
cells The basic unit of structure and function in all living things
Ribosomes small grain-shaped organelles that produce proteins
compound microscope a light microscope that has two or more lenses
passive transport materials move from an area of higher concentration to an area of lower concentration through a cell membrane
cell size you cant see the cells in your body because most of then are very small
Mitochondria Powerhouse of the cell, produces energy by converting food
Chloroplast organelles that use energy from sunlight to produce food
many -celled have different sizes and shapes
Cell theory states 1. All living things are made up of cells 2. cells are the basic units of structure and function in living things 3. new cells are produced from existing cells
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.
Mitochondria vs Chloroplast mitochondria take energy from food; both cells chloroplasts take the sun's energy and change it into energy; only plant cells
plant vs animal cells 1. Plant cell has cell wall, animal cell does not. 2. Plant cell has one large vacuole, animal cell has several small vacuoles. 3. Plant cell has choloroplasts for making food, animal cell does not.
Created by: mglade
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