Lab Assessment PDF

Summary

This document contains a set of biology questions and answers relating to topics such as cell division, respiration, photosynthesis, and monohybrid and dihybrid crosses. The questions cover a broad range of topics. This document is likely a lab assessment.

Full Transcript

Lab Assessment 1. G1? -- are all the conditions favorable for cell division to begin 2. G2? -- did the DNA copy correctly, any DNA damages? 3. M?- did all the chromatids align properly at the middle of the cell 4. Mitosis Stages: Prophase -- Metaphase -- Anaphase -- Telophase 5. Which is t...

Lab Assessment 1. G1? -- are all the conditions favorable for cell division to begin 2. G2? -- did the DNA copy correctly, any DNA damages? 3. M?- did all the chromatids align properly at the middle of the cell 4. Mitosis Stages: Prophase -- Metaphase -- Anaphase -- Telophase 5. Which is the final electron acceptor in aerobic respiration? Oxygen 6. What do we do in the beans experiment? -- checked for respiration 7. What is the role of the yeast? Fermentation or oxidation? Fermentation and yeast was used as a catalyst 8. What are the effect of light and different wavelength of the lights? What about the green light? Chlorophylls absorb light in different wavelengths, meaning that not every light is absorbed by the pigments. Green light is reflected thus showing the green color in plants 9. Where does the DCMU and azide act? DCMU inhibits photosystem II slowing the electron transport chain in photosynthesis but does not affect cellular respiration at all. Sodium azide inhibits the electron transport chain In electron transport chain in the mitochondria, affecting cellular respiration by stopping ATP production 10. What are the final products of the photosynthetic reaction? Oxygen and Glucose 11. Where does the CO2 is utilized? In the production of G3p in the Calvin cycle 12. What are the products of the light dependent reactions that are required for the light independent reactions? ATP and NADPH 13. In which part does the Light-dependent reactions takes place? Thylakoid membrane 14. Lac operon is referred to as a? Inducible Operon 15. The lac operon in addition to responding to the presence or absence of lactose is also sensitive to glucose levels.  What will happen to the cAMP and CAP protein in the presence of glucose? cCAMp will be low and CAP protein will be activating high levels of expression 16. What is the name of the stretch of DNA where RNA polymerase binds? Promoter 17. If glucose is absent, but so is lactose, the alc operon will be? Repressed 18. The ara operon is an inducible operon that controls the production of the sugar arabinose. When arabinose is present in a bacterium it binds to the protein AraC, and the complex binds to the initiator site to promote transcription. In this scenario, AraC is a \_\_? Activator 19. The binding of \_\_\_\_\_\_\_\_ is required for transcription to start.? RNA Polymerase 20. What is the difference between monohybrid and dihybrid cross? A monohybrid is a genetic cross over one trait and a dihybrid is a genetic cross over two traits. 21. What is the ratio of F2 generation in monohybrid cross? 3:1 22. What is the ratio of F2 generation in dihybrid cross? 9:3:3:1 23. What are each term mean -- genotype and phenotype? Phenotype is the physical appearance of the allele, and the genotype are specific alleles possessing for a particular trait 24. Does exchange of genetic material occur in meiosis? What is the process called? Yes its called homologous recombination

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