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What are cells?
They are the building blocks that make up living things.
True or false: All prokaryotic organisms are unicellular
True
Why do cells from different tissues look different?
They do different jobs
Is a theory permanent?
No. A theory can be changed when new evidence is found.
What are two ways to classify a cell?
Prokaryotic - no nucleus
Eukaryotic - has a nucleus
True or false: Cells group together to form tissue. Tissues group together to form organs.
True
What is the difference between a unicellular and a multicellular organism?
Unicellular - one cell
Multicellular - two or more cells
What is DNA?
DNA is a molecule that stores the information that is needed to build and maintain an organism
Who first discovered DNA? How did he discover it?
Robert Hooke first discovered DNA using a microscope.
Give two analogies of DNA.
library, blueprint, recipe
Give two examples of human cells that we learned about in class
-Neuron
-Red blood cell
NOT on quiz: how many cells does a human body have?
30 trillion cells
What is cell theory?
A theory that says: (1) all living things are made of cells (2) all cells come from preexisting cells (3) cells perform the functions of living things.
What does a neuron do?
It transmits messages in the brain and spinal cord.
NOT on quiz: how long is DNA from one cell
about 6 feet