Biology: A Guide to the Natural World

Chapter 9: End of Chapter Quiz

Understanding the Basics

1. Proteins serve in living things as:  

2. The four bases found along the DNA double helix are  

3. A gene can be described as  

4. Cell division in bacteria operates very differently from cell division in eukaryotes. Which statement is incorrect regarding the cell-division process in bacteria?  

5. DNA is primarily  

6. Prophase has begun when  

7. A _____ is composed of two sets of protein filaments that help bring about cytokinesis.  

8. A root-tip cell in a plant has 22 chromosomes. How many chromatids can be seen during prophase when this cell is undergoing mitosis?  

9. The cell cycle is linked to cancer because cancer always entails  

10. If a cell is not dividing, and has not yet replicated its DNA (duplicated its chromosomes), what phase of the cell cycle would it be in?  

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