Cells are the basic units of structure and function of living things.
What is a cell?
100
Robert Hooke
What is the name of the English Scientist and inventor who built the first compound microscope?
100
Organelles
What are the tiny structures that carry our specific functions within the cell?
100
Elements
Examples include Oxygen and Nitrogen,
What is any substance that cannot be broken down into simpler substances?
100
Diffusion is the main method by which small molecules move across the cell membrane.
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration.
The concentration of a substance is the amount of the substance in a given volume - 1 gram of sugar dissolved in 1 liter of water = 1 gram per liter.
What is diffusion?
200
Cells form the part of an organism and carry out all of an organism's processes or functions.
What is the function of a cell?
200
Cell theory states the following:
* All living things are composed (made up of) of cells.
* Cells are the basic units of structure and function in living things.
* All cells are produced from other cells.
What is cell theory?
200
Cell Wall
What is a rigid layer of nonliving material that surrounds the cells of plants and some other organisms?
200
A Compound
What do two or more elements form when they are combined chemically?
200
Osmosis is the diffusion of water molecules through a selectively permeable membrane.
Osmosis is important to cells because cells cannot function properly without adequate water.
What is osmosis?
300
The structure of living things are determined by the amazing variety of ways in which cells are put together.
How is the structure of living things and cells determined?
300
Magnification and Resolution
What two important properties must be combined for microscopes to be useful?
300
Cell Membrane
What controls the substances that come into and out of a cell?
300
A Carbohydrate
Sugar and starches are examples of carbohydrates.
What is an energy - rich organic compound made of the elements carbon, hydrogen, and oxygen?
300
It is the movement of dissolved materials through a cell membrane without using cellular energy.
What is Passive Transport?
400
The microscope
What is an instrument that makes small objects look larger?
400
Light Microcopes and Electron Microscope.
What are the two types of microscopes used by scientists today?
400
Nucleus
What is the control center of the cell that directs all cellular activity?
400
An enzyme
What is a type of protein that speeds up a chemical reaction in living things?
400
It is the movement of materials through a cell membrane using cellular energy.
What is active transport?
500
An organism's functions are the processes that enable it to stay alive and reproduce.
What is cellular function?
500
Beams of Electrons.
What do electron microscopes use to produce magnified images?
500
Mitochondria
What organelle is known as the "powerhouse" of the cell since it converts energy in food molecules to energy that can be used to carry out cellular functions?
500
Water
What compound is needed for most chemical reactions to take place in cells?
500
Active transport requires the cell to use energy while passive transport does not.
What is the difference between active and passive transport?