Cells
What part of a cell controls what goes in and out?
Cell Membrane
Does diffusion require energy?
NO
Name a kind of passive transport.
Diffusion
What do you call the small bean-shaped cells that surround the stoma of a leaf and control the size of the opening?
Guard Cells
What is the difference between a unicellular and multicellular organism?
unicellular is made of one cell
multicellular is made of more than one cell
What is diffusion?
Movement of molecules from an area of high concentration to an area of low concentration.
What are the messages sent by nerve cells called?
What is a nerve cell?
A cell that carries messages (impulses) from the brain to other parts of the body.
What is a pseudopod?
A "false foot" that helps a cell move around
True or False: Passive transport is the movement of material without the use of energy.
What do guard cells let in and out of a cell?
They let in carbon dioxide and let out water.
Why does a red blood cell not have a nucleus?
It needs to be flexible to fit through capillaries and it can carry more oxygen with its shape.
Why do cells have different shapes?
Each cell type has a different function/job, their shapes are specifically designed for them to best do their job.
What is the movement of water through a cell membrane?
What does a red blood cell do?
Carries oxygen throughout the body
Amoeba
Where does Cellular Respiration happen?
In the mitochondria!
What is active transport?
Movement of substances in the opposite direction they would naturally move. Towards an area of higher concentration.
How does an amoeba eat?
It surround the food and absorbs it.
What is the process by which a cell releases energy from food without using oxygen?
Fermentation