Download Name: Period _____ Date: ______ Mrs. Rodriguez

Name: _______________________
Mrs. Rodriguez
Period _____
Date: ____________
Review Sheet – Cells
Answer the following questions. Use full sentences.
1. Explain how each of the following scientists contribute to the development of
the Cell Theory:
a) Robert Hooke In 1665 he looked at cork and saw box like structures that he called
cells. Hooke also developed the compound microscope.
b) Anton Von Leewenhoek 1683, he saw “Wee Beasties” in a sample of pond water using a simple
microscope._______________________________________________
c) Matthias Schleiden
Theorized that all plants are made of cells. _______________________
d) Theodor Schwann
Theorized that all animals are made of cells.______________________
e) Rudolf Virchow
Observed dividing cells and stated that all cells must come from cells
that already exist.________________________________________
2. What are the three points of the Cell Theory?
1) All organisms are made of one or more cells. _____________________
2) The cell is the basic unit of structure and function in living things. _____
3) All cells come form cells that already exist. ______________________
3. How did the cell get its name?
Robert Hooke called the box like structures he saw in cork cells because they
reminded him of monastery cells.
4. What cell parts are found in only plant cells?
Cell Wall and Chloroplast are only found in plant cells. ________________
5. What cell part is found in only animal cells?
Centrioles are only found in animal cells ____________________________
6. Define diffusion.
Diffusion is when molecules move from a more crowded place to a less___
cowded place_________________________________________________
7. Define passive transport.
Passive transport is when molecules move across the cell membrane from _
where they are more crowded to where they are less crowded.___________
8. Define active transport.
Active transport is when molecules move across the cell membrane from __
where they are less crowded to where they are more crowded. ___________
9. During passive transport do cells have to use its own energy?
NO_
10. During active transport do cells have to use its own energy?
YES__
11. Define osmosis.
Osmosis is the diffusion of water across the cell membrane.____________
12. What might happen to an animal cell if it gains too much water?
If an animal cell gains too much water it will swell and may burst. This is ___
because an animal cell does not have a cell wall. _____________________
13. What do we call the process by which a cell shrinks due to water loss?
Plasmolysis is the process by which a cell shrinks due to water loss. _____
PLANT ANIMAL
CELL
CELL
ORGANELLE
FUNCTION
(Cell Part)
(What does it do?)
y
y
Nucleus
y
y
Nucleolus
y
y
Cell Membrane
Controls the cell
Produces (makes) ribosome’s
Outer layer of the cell – the gate
keeper
y
y
Cytoplasm
Jelly like substance that holds all
the organelles in place
y
y
Endoplasmic
Transports materials all over the
Reticulum
cell
y
y
Ribosomes
Produces proteins
y
y
Golgi Body
Packages materials and sends
(Apparatus)
them to places around the cell
y
y
Mitochondrion
Power house of the cell – makes
energy (ATP)
y
y
Lysosomes
y
y
Vacuole
Hold and gets rid of waste
Storage for water, food, etc. bigger
in plants
n
y
Centrioles
Helps with cell division only in
animal cells
y
y
Nuclear Membrane
Surrounds the nucleus.
y
n
Cell Wall
Supports the plant cell
y
n
Chloroplast
Hold chlorophyll – where
photosynthesis occurs.