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Section 7.3, 8, 9 Reading Worksheet DIRECTIONS: Read pages 182-189, 200-215, 220-233 in your textbook and answer the questions below. SECTION 7.3 1. What are the main functions of the cell membrane?
2. What does it mean that a cell membrane is a ‘lipid bilayer’?
3. Look at figure 7-12, what do the blue molecules represent in the illustration of the cell membrane?
4. What is difference between diffusion and osmosis?
5. How can you tell if a solution is isotonic, hypertonic or hypotonic?
6. Explain what happens to a blood cell and plant cell when placed in an isotonic, hypertonic and hypotonic solution (look at figure 7-16)
7. What is the difference between active transport and facilitated diffusion? Which molecules in the membrane do they use?
8. Explain the difference between exocytosis and endocytosis?
SECTION 8.1 1. Explain the relationship between an autotroph and a heterotroph and give an example of each
2. What does an ATP molecule consist of? How is the energy stored and released?
3. What would be the result if the third phosphate group were removed?
SECTION 8.2
1. Write the equation for photosynthesis
2. Why are light and chlorophyll needed for photosynthesis?
SECTION 9-1 (221-225)
1. What is a calorie?
2. Write the equation for cellular respiration. Where does cellular respiration happen?
3. Explain how the equation of photosynthesis and cellular respiration are related.
4. Name the two types of fermentation and where they happen.
5. Look at figure 9-9 on page 230. Explain the process involved in ‘quick’ and ‘long-term’ energy
6. Read about Supplements on page 233. What do you think? Should they be banned? Why or why not? Support your answer