Download Bio Chapter 7 Study Guide - stjohns

Name: ______________________
Class: _________________
Date: _________
ID: A
Bio Chapter 7 Study Guide
Short Answer
1. What does the cell theory say?
2. What kinds of microscopes could you use to look at the structure of DNA? Could you study the structure of
DNA in a living specimen? Why or why not?
Figure 7–8
3. Is the cell in Figure 7–8 above a prokaryote or a eukaryote? What features help you determine your answer?
1
Name: ______________________
ID: A
4. How do prokaryotes and eukaryotes differ?
5. List two functions of the cytoskeleton.
Figure 7–7
6. Identify each of the cell structures indicated in Figure 7–7. Use these terms: nucleus, mitochondrion,
ribosome, cell membrane, smooth endoplasmic reticulum, rough endoplasmic reticulum, nucleolus, Golgi
apparatus, cytoplasm.
2
Name: ______________________
ID: A
Figure 7–9
7. Which structures in the cells shown in Figure 7–9 above are responsible for meeting the cells’ energy needs?
Based on the presence or absence of these structures, identify which cell is a plant cell.
8. What advantages do cell walls provide plant cells that contact fresh water?
9. What would happen if a cell’s membrane became impermeable?
10. Suppose you add a teaspoon of sugar to a cup of coffee, and the sugar molecules disperse themselves
throughout the hot coffee. What process has occurred? How do you know?
11. Explain, in terms of osmosis, why a raisin placed in a cup of pure water overnight will puff up with water.
3
Name: ______________________
ID: A
12. How are endocytosis and exocytosis similar? How are they different?
13. List the four levels of organization in a multicellular organism in order from simplest to most complex.
Essay
1. Summarize three statements from the cell theory. Explain the significance of the cell theory to biology.
2. Describe the cell membrane, cell wall, nucleus, and cytoplasm. Which of these structures are you likely to find
in a prokaryotic cell? Eukaryotic cell? Plant cell? Animal cell?
4
Name: ______________________
ID: A
3. Compare and contrast the structure and function of the cell wall with that of the cell membrane.
4. Why is the cell membrane sometimes compared to mosaic art?
Figure 7-13
5. The diagrams in Figure 7-13 above show a normal blood cell before and after it is placed in a solution.
Describe what could cause the cell to react the way that it did.
5
Name: ______________________
ID: A
6. How do facilitated diffusion and active transport differ? Is osmosis an example of facilitated diffusion or
active transport?
7. Compare a cell from a unicellular organism with a cell from a multicellular organism in terms of cell
specialization.
8. Discuss the levels of organization in multicellular organisms and explain why these levels are not used to
describe unicellular organisms.
6