Name: 
 

7th_Grade_Review_Cells



True/False
Indicate whether the statement is true or false.
 

 1. 

Organisms, except some primitive plants, are made up of cells.
 

 2. 

Most plants and animals are single-cell organisms.
 

 3. 

Cell theory is possible because of Leeuwenhoek’s invention.
 

 4. 

All cells have the same structure but different functions.
 

 5. 

Prokaryotic cells have flagellum; eukaryotic cells do not.
 

 6. 

Most of the life processes of a cell take place in the cytoplasm.
 

 7. 

Cells make proteins on small structures called amino acids.
 

 8. 

Smooth and rough endoplasmic reticulum can be found in every animal cell.
 

 9. 

The heart is an organ made up of nerve, blood, and muscle tissue.
 

 10. 

Some bacteria are organized into tissue, organs, and organ systems.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 11. 

All organisms need _____ to survive.
a.
food, place to live, sunlight
c.
food, water, sunlight
b.
food, place to live, water
d.
place to live, sunlight, water
 

 12. 

The smallest unit of life is the _____.
a.
cell
c.
organism
b.
homeostasis
d.
protein
 

 13. 

_____ transports materials within a cell and between cells.
a.
Fast
c.
Sugar
b.
Protein
d.
Water
 

 14. 

When an organism dies, the substances in its body are _____ by other organisms.
a.
recycled
c.
substituted
b.
replaced
d.
transposed
 

 15. 

Plants and some bacteria make their own _____.
a.
cells
c.
life spans
b.
food
d.
places to live
 

 16. 

Most organisms are made up of more than _____ percent water.
a.
40
c.
60
b.
50
d.
70
 

 17. 

If two organisms have the same genus, they are _____.
a.
cetacean
c.
related
b.
dolphins
d.
salamanders
 

 18. 

A Swedish naturalist named _____ developed a system of classifying organisms.
a.
Binomial
c.
Leeuwenhoek
b.
Dichotomous
d.
Linnaeus
 

 19. 

The nucleus is the largest of the _____.
a.
chloroplasts
c.
organelles
b.
mitochondria
d.
ribosomes
 

 20. 

Chlorophyll can be found in organelles called _____.
a.
amino acids
c.
Golgi bodies
b.
chloroplasts
d.
ribosomes
 

 21. 

Which is not found in plant cells?
a.
chloroplast
c.
lysosome
b.
Golgi bodies
d.
mitochondrion
 

 22. 

Which is not found in animal cells?
a.
central vacuole
c.
rough endoplasmic reticulum
b.
cytoskeleton
d.
smooth endoplasmic reticulum
 

 23. 

Lysosomes are organelles that contain _____ to break down food and cell waste.
a.
bacteria
c.
digestive chemicals
b.
cellular molecules
d.
viruses
 

 24. 

A virus contains which of these parts?
a.
cell membrane
c.
organs
b.
hereditary materials
d.
ribosomes
 

 25. 

The rabies virus can infect _____.
a.
a variety of plants.
c.
multiple species
b.
animals but not humans.
d.
pets but not farm animals
 

 26. 

Which of these measures will not help a viral infection?
a.
antibiotics
b.
controlling animals that spread disease
c.
improving sanitary conditions
d.
vaccinations
 

Matching
 
 
Match each term with correct statement below.
a.
binomial nomenclature
e.
homeostasis
b.
cells
f.
life span
c.
dichotomous key
g.
reproduce
d.
energy
h.
stimuli
 

 27. 

a detailed list of identifying characteristics
 

 28. 

the length of time an organism lives
 

 29. 

to make more of an organism’s own kind
 

 30. 

the smallest units that carry on life functions
 

 31. 

the two-word name that is an organism’s species
 

 32. 

the internal regulation of life-maintaining processes
 

 33. 

what all living things use to find food
 

 34. 

things that cause change
 

Short Answer
 

 35. 

Why do scientists classify life?
 

 36. 

How are eukaryotic cells different from prokaryotic?
 

 37. 

What does the cell membrane regulate?
 

 38. 

How are rough and smooth endoplasmic reticulum different?
 

 39. 

How was yellow fever eradicated in the United States?
 

 40. 

What are interferons?
 

 41. 

What is the immune system?
 



 
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