[CELL GROWTH AND DIVISION]
Introduction to Biology
1. One of the key features that separates life from non-life is:
2. Do all cells have the ability to reproduce?
3. How do unicellular organisms reproduce?
4. What is cell division needed for in multicellular organisms?
a.
b.
c.
5. Define asexual reproduction –
a. The offspring produced are __________________________.
b. What are the four benefits of reproducing asexually?
i.
ii.
iii.
iv.
c. Who can reproduce asexually?
6. Define sexual reproduction –
a. What is the benefit of sexual reproduction?
b. Who can reproduce sexually?
7. Define genome –
8. DNA molecules in a cell are packaged into _________________________.
Biology Teaching Resources
http://www.aurumscience.com/biology.html
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[CELL GROWTH AND DIVISION]
Introduction to Biology
Chromosomes
9. What is the purpose of chromosomes?
a. Every cell must ____________________________________ before cell division.
b. Each new daughter cell gets _____________________________________________.
c. Cells of every organism have ____________________________________________.
10. Prokaryotic cells lack _________________.
a. Where is their DNA?
b. What form does their chromosome take?
c. Draw a picture of a prokaryotic cell with chromosome below:
11. In eukaryotic cells, chromosomes are located in the _________________ and are made of
___________________.
12. What is chromatin made of?
13. What are nucleosomes?
14. What are chromosomes made of?
15. What must happen to prepare for cell division?
a. Each duplicated chromosome forms ___________________________________.
b. What is the centromere?
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[CELL GROWTH AND DIVISION]
Introduction to Biology
Phases of the Cell Cycle
16. The cell cycle consists of:
a. The Mitotic (M) Phase –
b. Interphase –
List the three parts of interphase:
i.
ii.
iii.
17. Label this diagram:
18. What happens in the G1 phase?
19. What happens in the S phase?
20. What happens in the G2 phase?
21. Describe the two phases of cell division in eukaryotes:
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[CELL GROWTH AND DIVISION]
Introduction to Biology
a. Mitosis –
b. Cytokinesis –
22. Define each of these important structures in mitosis:
a. Chromatid –
b. Centromere –
c. Centrioles –
d. Spindle –
23. Fill in this table for the different stages of mitosis:
Stage of Mitosis
What Happens?
What Does it Look Like?
Interphase
Prophase
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[CELL GROWTH AND DIVISION]
Introduction to Biology
Metaphase
Anaphase
Telophase
24. What is cytokinesis?
25. Describe how cytokinesis occurs in animal cells:
26. Why does the process have to be different in plant cells?
27. What forms instead in plant cells?
Binary Fission
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[CELL GROWTH AND DIVISION]
Introduction to Biology
28. Prokaryotes reproduce by a type of cell division called _________________________.
29. What happens during binary fission?
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[CELL GROWTH AND DIVISION]
Introduction to Biology
30. The events of the cell cycle are controlled by a _____________________________________.
31. The control system has specific _________________________ where the cell cycle
_______________ until a ______________________ is received.
32. Name the three cell cycle checkpoints:
a.
b.
c.
33. Which checkpoint is the most important?
a. What happens if the cell receives a go-ahead signal at this checkpoint?
b. What happens if the cell does not receive a go-ahead signal?
34. Describe the two examples of cell growth control:
a. Density-dependent inhibition:
b. Anchorage dependence:
35. What goes wrong with cancer cells?
36. What are tumors?
a. What makes a tumor benign?
b. What makes a tumor malignant?
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