Vocabulary 1
The scientific word for a living creature
organism
The instrument that we use to look at cells
the microscope
About how many cells does a human have?
a) 37 million
b) 37 billion
c) 37 trillion
c) 37 trillion
What all living creatures are made of
cells
What is cytoplasm?
The liquid that fills up the cell (it has water, salt and protein).
This surrounds the cell, but only for plants
cell wall
What is the difference between a unicellular and multicellular organism?
unicellular has one cell, multicellular have multiple cells
What does a cell do to stop from becoming too big?
It divides into two
This surrounds the cell and acts as a gate to allow some things in, and some things out
cell membrane
What do flagella do?
Flagella are like the wheels, or the fins, on the cell. They push it around to where it needs to go
This organelle holds the genetic information for an animal cell
nucleus
How can you use a microscope to tell if there are organisms living in water?
Look for cells
What does a vacuole do?
Holds waste, fills the cell structure
These organelles change light into energy for plant cells
chloroplasts
Why are plant cells firmer than animal cells?
They have cell walls (plants don't have bones)
This organelle holds all the energy in the cell
mitochondria
What type of cell will a virus have?
Prokaryotic cell
What bad thing will happen when a cell becomes too big?
Materials like food and waste will not move through the cell membrane fast enough
This refers to a special device that lives within a cell
organelle
What does the smooth endoplasmic reticulum do?
Makes and processes fats (lipids)
This is a type of cell WITHOUT a nucleus or other membrane-bound organelles
prokaryotic
Who was the scientist that invented the microscope?
Robert Hooke
What does the Golgi apparatus do?
Moves protein to different areas of the cell
This is a type of cell WITH a nucleus or other membrane-bound organelles
eukaryotic
What does the rough endoplasmic reticulum do?
Makes and processes proteins