Biology 121 study concepts for Chapter 3 material

  1. What is the cell theory?
  2. What is the fluid-mosaic model of the cell membrane?
  3. What is the role of the phospholipid bilayer, cholesterol, glycoprotein, and glycolipid in the cell membrane?
  4. What are the types of proteins found in the cell membrane, and what do they do?
  5. What are microvilli?
  6. How do tight (adhesive) junctions, desmosomes, and gap junctions differ from one another?
  7. What is the difference between passive and active transport?
  8. Describe and define the different types of passive transport: simple diffusion, osmosis, facilitated diffusion, and filtration.
  9. What is the difference between isotonic, hypotonic and hypertonic solutions?
  10. What is a solute pump?
  11. How does the Na/K pump work?
  12. What are exocytosis, endocytosis, phagocytosis, and pinocytosis?
  13. What is an organelle?
  14. Define and know the function of: cytosol, mitochondria, peroxisome, ribosome, rough endoplasmic reticulum, smooth endoplasmic reticulum, golgi apparatus, and lysosome.
  15. What is the endomembrane system, and how does it work?
  16. What are microtubules, microfilaments, and intermediate filaments, and what do they do?
  17. What are centrioles, cilia and flagella, and what do they do?
  18. Know the following: nucleus, nucleoplasm, nuclear envelope, nucleolus, chromatin.
  19. What are the stages of the cell cycle, and what happens in each stage?
  20. What is cytokinesis?
  21. What is DNA replication, and how does it work?
  22. What is transcription, and how does it work?
  23. What is translation, and how does it work?
  24. How can you use a codon table in order to determine what amino acid is coded for?
  25. What is the role of DNA, mRNA, tRNA and rRNA?