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science test cells

cell structure and function

One of the first people to observe cells Robert Hooke
Discovered one celled organism Leeuwenhoek
Concluded that all plants are made up of cells Schleiden
Discovered all living things are made of cells Schwann
Proposed that all cells come from cells Virchow
Ability to make things look larger than they are Magnification
Ability to clearly distinguish Resolution
THe basic unit of structure and function in living things Cell
Any instrument that makes small objects look larger Microscope
A widely accepted explanation of the relationship between cells and living things Cell theory
Are tiny cell structures that carry out specific functions within the cell Organelles
Rigid layer of nonliving material that surrounds the cells of plants and other organisms Cell wall
Forms the outside boundary that separates the cell from its environment Cell membrane
A large oval structure that directs all of the cell's activities Nucleus
The region between the cell membrane and the nucleus is called Cytoplasm
Produce most of the energy the cell needs to carry out its functions(power house) Mitochondria
A maze passageways that carries proteins and other materials from one part of the cell to another Endoplasmic reticulum
Function as factories to produce proteins Ribosomes
Receive proteins and other newly formed materials and distribute them to other parts of the cell Golgi body
Capture energy from sunlight and use it to produce food for the cell Chloroplasts
Storage area of a cell Vacuole
Small,round structures in cells that break down large food particles into smaller ones Lysosomes
Any substance that cannot be broken down into simpler substances Element
The chemical combination of two or more elements Compound
An energy-rich organic compound such as sugar Carbohydrates
Large organic molecules made of carbon,hydrogen, oxygen,nitrogen,and,in some cases sulfur Proteins
Small molecules that make up proteins Amino acids
Type of protein that speeds up chemical reactions in living things Enzyme
An energy-rich organic compound such as sugar Lipid
Very large organic molecules made of of carbon, hydrogen,oxygen,nitrogen and phosphorus Nucleic acids
Type of nucleic acid that passes from parent offspring and directs all the cells functions DNA
Type of nucleic acid that plays an important role in the productions of proteins RNA
Means letting some but not all substances pass through Selectively permeable
Is the process by which molecules tend to move from an area of higher concentration to a lower concentration Diffusion
The process by which water moves across a selectively permeable membrane Osmosis
Diffusion and osmosis are types of Passive transport
Requires the cell's own energy Active transport
Created by: tmoney24680