150+Study+Guide+2+Fall+2017.docx

150+Study+Guide+2+Fall+2017.docx - 150 Study Guide 2 Fall...

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150 Study Guide 2 Fall 2017 1. Know the general features of the Fluid Mosaic model of membrane structure. 2. How do integral and peripheral membrane proteins differ? 3. What factors influence the fluidity of membranes? 4. What is meant by “semi-permeable” (or “selectively permeable”)? 5. What types of molecules move across membranes most easily? 6. The phospholipid bilayer is impermeable to what types of molecules? How are such molecules moved across membranes? 7. What is the difference between passive transport and active transport? 8. What type of membrane transport always requires energy? 9. With reference to membranes, what is a concentration gradient ? 10. What is osmosis? Know the meaning of hypertonic, hypotonic, and isotonic. 11. What are some examples of membrane transport proteins? 12. Know the general features of the sodium/potassium pump. What does it do? What is the energy source? In general terms, how does the sodium/potassium pump function in nerve cells? 13. What are exocytosis and endocytosis? 14. What is the difference between an endergonic reaction and an exergonic reaction? 15. Life can’t violate thermodynamics. So how do cells carry out reactions that would otherwise be endergonic (thermodynamically unfavorable)? 16. What is the difference between a catabolic pathway and an anabolic pathway? 17. What is the primary role of ATP in metabolism? 18. What are the two ways cells make ATP? 19. What is a redox reaction? 20. What does all energy metabolism have in common?
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21. What happens to the energy released in catabolic processes?
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