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Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
CH7.1Directed Reading
Section: Introduction to Cells
Read each question, and write your answer in the space provided.
1. How and when did scientists discover cells?
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2. What is the cell theory? Who formulated it and when?
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3. How do cells vary in shape?
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4. Why is it an advantage for cells to be small?
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In the space provided, write the letter of the description that best matches
each term.
_____ 5. cell membrane
_____ 6. cytoplasm
_____ 7. DNA
_____ 8. ribosome
_____ 9. organelles
_____ 10. nucleus
a. cell fluid and structures
b. cell structure where proteins are made
c. cell structures that carry out specific
functions
d. genetic information
e. membrane-bound structure that houses a
cell’s DNA
f. the outer boundary of a cell
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Cell Structure
Name ______________________________ Class ___________________ Date __________________
Directed Reading continued
Read each question, and write your answer in the space provided.
11. What are prokaryotes, what are they like, and when did they arise?
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12. How do eukaryotes differ from prokaryotes? When did eukaryotes arise?
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Write p if the cell feature is found in prokaryotes. Write e if the cell feature is
found in eukaryotes. Write b if the cell feature is found in both prokaryotes
and eukaryotes.
_____ 13. cell membrane
_____ 14. cytoplasm
_____ 15. capsule
_____ 16. DNA
_____ 17. ribosomes
_____ 18. organelles
_____ 19. nucleus
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Cell Structure
Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
CH7.2 Directed Reading
Section: Inside the Eukaryotic Cell
Read each question, and write your answer in the space provided.
1. What is the cytoskeleton, and what is its function?
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2. What are three types of cytoskeleton fibers, and what does each do?
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3. What is the main function of the nucleus, and why is this essential for the
health of the cell?
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4. What is the nucleolus, where is it, and what is its function?
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5. What are the two types of ribosomes, and what does each do?
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6. Describe the endoplasmic reticulum, and tell what the two different kinds of
endoplasmic reticulum do.
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Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Cell Structure
Name ______________________________ Class ___________________ Date __________________
Directed Reading continued
7. How does the Golgi apparatus continue the function of the rough ER?
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8. What are two functions of lysosomes?
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9. What do contractile vacuoles in plants do?
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10. What do contractile vacuoles in protists do?
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11. What is ATP?
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12. What are chloroplasts, how are they structured, and in what kinds of cells are
they found?
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13. What function do mitochondria perform? Why do some cells contain many
mitochondria?
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Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
6
Cell Structure
Name ______________________________ Class ___________________ Date __________________
Skills Worksheet
CH7.3Directed Reading
Section: From Cell to Organism
Read each question, and write your answer in the space provided.
1. What are four ways that prokaryotes differ from eukaryotes?
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2. What are some ways that prokaryotes can vary?
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3. What are two different structures some prokaryotes have? Describe each, and
tell its function.
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4. How do plant cells differ from animal cells?
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5. Define tissue, and give an example of a plant tissue and an animal tissue.
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Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Cell Structure
Name ______________________________ Class ___________________ Date __________________
Directed Reading continued
6. Define organ, and give an example of an organ in plants and an organ in
animals.
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7. Distinguish between organs and organ systems. Give an example of an organ
system in plants and an organ system in animals.
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8. Define multicellular organism.
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9. What is a colonial organism? Give an example.
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10. What makes multicellular organisms very different from colonial organisms?
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Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Biology
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Cell Structure