Questions for midterm review Use review guide, notes and book 1. Which variable is the one we change? ___________________ 2. The five levels of organization of Ecology and their definitions Level of organization definition biosphere population A single individual 3. Population growth graph: Is the graph to the right, logistic or exponential? 4. Label the developed and underdeveloped countries below 5. Which part of the microscope is used to bring the specimen into clear view? 6. List the three Objective magnifications on our microscope: _______, _______, _____ 7. Calculate total magnification when looking through the 10x objective: Total mag = _______________ 7. What building blocks make up proteins? ______________________________ 8. Which biomolecule includes enzymes? _____________________________ 9. Which biomolecule serves as our main source of food energy? ___________________ 11. Enzyme function depends on ____________________ and ______________________ 12. Why does an enzyme stop working when it gets too hot? 13. Can an enzyme be used over and over again? __________ 14. Which box shows prokaryotic bacteria? ______ 15. Which box shows elodea plant cells with chloroplasts? ______ 16. Which box shows onion cells with no chloroplasts? _______ A. B. C. D. 17. Which organelle makes this cell to the right a eukaryote? ______________ 18. In what two places in the cell can we find ribosomes? ______________________ and _______________________ 19. Which organelle is the powerhouse of the cell? _______________________ 20. Where is the energy in a sugar molecule? ___________________ 21. What process happens in the mitochondrion of all eukaryotic cells? ___________________ 22. What is the ultimate source of energy for all living things? ________________________ 23. What is the definition of diffusion? 24. On the diagram to the right, draw arrows indicating what moved where during our experiment 25. In our egg experiment, the egg in the water _________________ weight because water diffused into the egg. 26. Who figured out the structure of DNA was a double helix? ________________________ 27. Which base bonds with G? _____ 28 What are the three parts of a nucleotide? _____________, ______________, _____________ 29. The two parts of protein synthesis in order of occurance are: _______________ and _______________ 31. The image below is showing the assembly of mRNA. Is this transcription or translation? 30. Where does translation take place? ______________________ 32. What process is shown below in steps 1-3? 33. In which part of interphase does DNA replication occur? __________________________ 35. In which phase of mitosis do the chromatid sisters get pulled apart by spindle fibers?_______________________ 36. When cytokinesis involves the formation of a cell plate, are we talking about a plant cell or an animal cell? ___________________ 37. Identify numbers 1-4 on the diagram to the right. 1. _________________ 2. ________________ 3. ________________ 4. _______________ 38. Which structure on the chromosome holds the sister chromatids together? _______________ 39. Does this represent a chromosome before or after DNA replication? 40. Is the person in the karyotype to the right a boy or a girl? _______________ 41. Are gametes formed by mitosis or meiosis? ________________ 42. In nondisjunction, chromatid sisters do not separate during what phase of mitosis? _______________________________