Name _________________________
Review: Cell History and Theory, Cell Parts and Functions, and Cell Transport
Ms. Russo/Ms. Pehowic – Science 7 – period _____
Date ____________________
1. Directions: Using your notes and section 1-2 in your textbook, fill in the timeline with the appropriate
information. Be sure to include the year and the scientists’ names on the actual timeline.
Hooke
(1663)
Schleiden
(1838)
Leeuwenhoek
(1673)
Schwann
(1839)
1600
1675
Virchow
(1858)
1750
1900
1825
2. Directions: Now that you have completed the timeline, please use the space below to describe the
contributions made by each scientist.
Hooke__coined the term “cell,” basing it upon the names of the rooms of the monastery in which he lived ________
Leeuwenhoek__credited with being one of the first people to see microorganisms; named bacteria “animalcules” __
Schleiden__determined that all plants are made of cells (“schleiden off a leaf”) ______________________________
Schwann__ determined that all animals are made of cells (swan – animal) _________________________________
Virchow__determined that cells arise from other living cells like them ___________________________________
3. Directions: List the 3 parts of the Cell Theory below.
1. __All living things are made of cells. ______________________________________________________________
2. __Cells are the basic unit of structure and function of all living things. ___________________________________
3. __All cells arise from previously existing cells like them. ______________________________________________
1-3 Enrich Worksheet Answers
1.
a) Allows for building to take place.
b) Transport materials throughout the town and sometimes outside of the
town.
c)
Produces power for the town to run.
d)
Creates food for the town.
e)
Takes materials and changes them back to a form the town can reuse.
f)
Important decisions and functions of the town are controlled by the City
Hall.
g)
Food and water supplies are stored in this location.
h)
Keeps unwanted things out.
2.
a)
b)
c)
d)
e)
f)
g)
h)
Ribosomes are like protein building sites.
The endoplasmic reticulum and Golgi bodies are like trucks moving
materials throughout the cell.
Mitochondria are like power plants providing energy for cell functions.
Chloroplasts are the location of food creation through the process of
photosynthesis.
Lysosomes break down large molecules AND old organelles in order to
release their components back to the cell for use.
The nucleus is where all cell decisions are made.
Vacuoles store extra food, water, and waste products.
The cell wall/cell membrane let certain materials into/out of the cell.
3. Since the “Cell City” contains chloroplasts, this is an example of a plant cell.
Section 2-2 worksheet Answers
Directions: Fill in the chart below based upon the information given in each diagram.
Material that is moving: Water
Area of high concentration: Inside the fish cells
Area of low concentration: The environment
1.
Type of Transport: Passive - Osmosis
Material that is moving: Oxygen
Area of high concentration: The lung cells
The cells of the
Area of low concentration: bloodstream
2.
Type of Transport: Passive – Diffusion
Material that is moving: Sodium
The nerve cell’s
Area of high concentration: environment
Area of low concentration: The nerve cell
3.
Type of Transport: Active – Transport proteins
Directions: Answer the Following questions using complete sentences.
4. Compare and contrast passive and active transport.
Both forms of transport are the same because they are moving materials cells need.
They are different because passive transport uses no energy to move materials from
high concentration to low concentration. Active transport uses energy to go from low
concentration to high concentration
5. Explain how osmosis differs from diffusion.
Osmosis differs from diffusion because water molecules must move through a
selectively permeable membrane.
6. Identify two methods of active transport.
Transport Proteins – how your nerve cells work
Transport by Engulfing – how amoebas and paramecia eat
7. Why is it important that cells are so small?
If cells were big, the cell would not be able to fulfill all of its material requirements or
life functions and would die.
Directions: If the statement is true, write true. If it is false, write false and change
the underlined word or words to make the statement true.
__true ____ __________________________ 8. If a membrane is selectively
permeable, it lets some but not all
substances pass through.
__false ___ ____Diffusion_______________ 9. Osmosis is the process by which
molecules tend to move from an area of
higher concentration to an area of lower
concentration, with or without a
membrane.
__false___ ____Osmosis________________ 10. The process by which water moves
through a selectively permeable
membrane from an area of higher
concentration to lowers concentration is
diffusion.
__false___ ____passive_________________ 11. Diffusion and osmosis are types of
active transport.
Note: See your teacher to have your created osmosis problems checked.