StudyGuideforLectureExam2_073753

StudyGuideforLectureExam2_073753 - Study Guide for Lecture...

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Study Guide for Lecture Exam 2 1. Know what the different cellular junctions are and what their basic functions are. 2. What are the main players in the plasma membrane that function in “selective transport?” 3. Know about carrier-mediated transport a. http://medical-dictionary.thefreedictionary.com/carrier-mediated+transport 4. What types of substances can diffuse easily across the plasma membrane and which cannot? 5. What is diffusion? What occurs during diffusion? 6. What types of things affect the rate of diffusion across the plasma membrane? 7. What happens to a cell when it’s placed in a hypertonic solution? What about a hypotonic one? 8. Is Na + more highly concentrated inside or outside the cell? What about K + ? 9. What is the Na + -K + ATPase pump? How many Na + ’s does it move and how many K + ’s? 10. What is osmosis? 11. What is membrane potential? 12. Know the definitions of excitability/irritability, contractility, elasticity, and extensibility 13. Know that a muscle (like the biceps) consists of a number of muscle fibers (cells) lying parallel to each other and bundled together by connective tissue 14. Know that a single skeletal muscle cell is known as a muscle fiber
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