Name _____________________________________ Block __________ Date __________
7th grade review
PAGE 1. Every living organism is made up of cells. In each cell, there are various organs that perform
specific jobs. Match the cell parts in column A with their functions in column B.
____ 1.endoplasmic reticulum
A. gives the cell its rigid shape
____ 2. Mitochondria
B. fluid inside the cell
____ 3. Chloroplast
C. directs activities of the cell
____ 4. Vacuole
D. regulates what enters and leave the cell
____ 5. Cell membrane
E. stores cell materials
____ 6. Nucleus
F. produces the cell’s energy
____ 7. Cytoplasm
G. passageways that carry materials around the cell
____ 8. Ribosome
H. contain chemicals that break down substances
____ 9. Lysosome
I. structure that create proteins
____ 10. Cell wall
J. captures energy from sunlight and uses it to produce food
For each situation or cell type name the cell structure.
11. Muscle cells need a lot of energy to move or contract. You would expect to see more
_______________ than in a non-muscle cell.
12. Some cells function to make proteins to be sent out of a cell. You would expect to see more
___________ than in other cells
13. A plant cell is used to store water to help support the cell. This cell would have a large
____________.
14. Some cells in a plant are not green and are not used for photosynthesis. These plant cells have few or
no ________________.
15. As a frog develops from a tadpole to an adult, its tail disappears. The ____________________ are
involved in the breakdown of the tail.
Compare prokaryotic and eukaryotic cells by completing the table, stating yes and not answers for
each type of cell.
Cell Structure
Prokaryotic Cells
Eukaryotic Cells
Cell Wall
a.
a
Cell membrane
b
b
Genetic material
c
c
Nucleus
d
d
Mitochondria
e
e
Chloroplasts
f
f
PAGE 2. Compare and contrast animal and plant cells.
Color and label the parts of the cells below.
PAGE 3. Cell Theory
1. All living things are composed of _______________.
2. Cells are the ______________ structure of living things that can perform the __________ necessary for
life.
3. Living cells come only from other ______________.
4. Cells contain _______________ information which is passed from cell to cell during cell division.
5. All cells are basically the same in ______________ composition.
6. All _____________ flow of life within cells.
Mitosis
Meiosis
1. ______________ reproduction
5. _______________ reproduction
2. _____________________ division process
6. ___________ divisions
3. __________ identical daughter cells are
produced
7. Exactly _________ the number of chromosomes
are produced
4. Occurs in _________ body cells
8. Occurs in _________ cells
Number the following stages of mitosis in order and label. (Interphase, prophase, metaphase, telophase,
and anaphase.)
Unicellular vs. multicellular organisms- Classify the following descriptions as being unicellular (U) or
multicellular (M).
_____1. has only one cell
6. eukaryotes
_____2. has many cells
7. Include amoeba, paramecium, algae, fungi, etc…
_____3. survives alone
8. Smaller less specialized organisms
_____4. cannot survive as one cell
9. Division of labor of cells is specialized
_____5. Prokaryotes
10. Include plants, animals, some bacteria, etc…
PAGE 4. Levels of Organization_ list the levels of organization from smallest to largest by completing
the table.
Level
1.
Tissue
3.
system
Definition
Basic unit of structure and function
2.
A structure made of different types of tissues
4.
* Identify the following examples as one of the following. (cell, tissue, organ, or system)
1. Heart muscle
2. A group of heart muscles
3. A single heart muscle cell
4. Cardiac system
*List 6 basic life functions for all living organisms.
1.
2.
3.
4.
5.
6.
Match the following vocabulary terms to their definitions that deal with the cell membrane
_____ 1. Passive transport
a. Process by which water moves from an area of high
concentration to an area of low concentration.
_____ 2, Diffusion
b. requires no additional energy for movement
_____ 3. Osmosis
c. Allows small particles to enter the cell but prevents large
particles.
_____ 4. Active transport
d. movement of material across a cell membrane that requires
energy to make it possible
_____ 5. Semi/selective permeable
e. Process by which solutes move from an area of high
concentration to an area of low concentration.
Plant and animal needs- Classify the following statements by comparing and contrasting plant and animal
needs.
Sunlight, shelter, carbon dioxide, water, food/nutrient, oxygen, space to live, soil, stable internal conditions
Plants
Both
Animals
PAGE 5

Looking for order- Number the components below in order from the simplest to the most complex.
a.______ Species
e.______ Family
b.______ Phylum
f.______ Order
c.______ Class
g.______ Genus
d.______ Kingdom

Write the mnemonic to help you remember the order for classification. (look up or make up)
K___________P__________C__________O__________F__________G__________S__________
Cell Type
Cell Structures
Single Cellular
How they Eat
Or multicellular
Arachaebacteria
1.
Cell wall; no
other structures
2.
Some autotrophic, some
heterotrophic
Bacteria
Prokaryote
3.
4.
5.
Protists
6.
7.
8.
Some autotrophic, some
heterotrophic
Fungi
9.
Nucleus
10.
11.
12.
13.
15.
16.
Mitochondria
Cell wall
Plants
Eukaryote
Nucleus
Mitochondria
Cell wall
Animals
14.
Nucleus
mitochondria
Grouping is determined by several factors. Fill in the blank for each statement
1. Organisms are grouped based on the presence or absence of ___________________ such as nucleus, mitochondria,
or cell wall.
2. Does the organism have __________ cell or _________cells.
3. How does the organism get its ______________?
4. Can the organism _____________ and produce ___________ offspring?
5. Father of Classification is _____________________________________.
6. Created ________________ _______________-two name classification system;
__________________ and ________________.
PAGE 6. Classification-Examine the table showing the classification of four organisms and answer the
questions.
1. Which taxon includes the most specific characteristics?
2. Which taxon includes the broadest characteristics?
3. Which taxon includes more species, an order or a family?
4. Which taxon includes only organisms that can successfully interbreed?
5. If two organisms belong to the same family, what other taxonomic groups do the organisms have in
common?
6. Which two taxa do all four organisms belong?
7. To which taxa do all four organisms belong?
8. Which class does not include animals that have hair or fur?
9. What is the order, family, and genus of a human?
10. Using the information in the chart, what can you conclude about the classification taxa of an organism
with the scientific name Rana temporaria?
Complete the paragraph below using the words: Carbon dioxide, chlorophyll, glucose, leaves, oxygen,
water, chemical energy, chloroplasts, hydrogen, and light energy.
The process by which plants use 1._____________ from the sun to make food is called photosynthesis. This
process occurs within dark green structures called 2._________________ which lie within a plant’s
3.____________. The green pigment in the chloroplasts, called 4._________________, traps light
energy. This light energy is changed into 5.________________ and stored.
A plant absorbs 6._______________________ from the air and 7._________________________ from the
soil. The plant uses some of its stored energy to split water into 8._____________________________
and oxygen. Most of the 9.__________________ is released into the air and is used by animals. The
hydrogen and carbon dioxide combine to form a simple sugar called 10.___________________, which
the plant may store or use for energy.
PAGE 7.
Complete the following formula for photosynthesis, then balance the chemical equation.
Carbon dioxide + 1._______________________
3.____________ +
# of atoms
6 H2O
2. ___________________ + oxygen
C6H12O6
+
4._______________
# of atoms
5. C:_______
8. C:_______
6. O:_______
9. O: ______
7. H: ______
10. H: ______
PAGE 8.
4.
3.
2.
1.
PAGE 9.
Nitrogen Cycle- Trace the flow of nitrogen through the environment by completing the flow chart.
1. What are the two ways in which plants get the nitrogen compounds that they can use?
2. What is the only way a consumer can get nitrogen compounds they need?
3. How do you think a carnivore gets the nitrogen it needs?
4. What is the relationship between producers (plants) and the bacteria in the nodules?
5. Can any organism use free nitrogen?
PAGE 10.
The Basic needs of all living things are:
1.
2.
3.
4.
5.
PAGE 11.
Fill in the blanks with each correct definition.
PAGE 12.
PAGE 13.
Adaptations in an ecosystem
PAGE 14.
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