For Short Answer Questions, Be Brief; Full Sentences Are Not Necessary. for Diagrams, Insert

FES 100 - Introduction to Forest Biology
Exam 2: 100 points October 31, 2008

For short answer questions, be brief; full sentences are not necessary. Point value for each question is in parentheses. If a question is not clear to you, please ask for clarification.

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1. (pt=2) Define photosynthesis:______

2. (pt=5) Make a sketch of a chloroplast, grana, thylakoid

3. (pt=1) What is one difference between NADPH and NADH:______

4. (pt=1) C4 and CAM plants are better adapted to what kind of environment when compared to C3 plants? ______

5. (pt=4) What are 2 similarities between Photosystem I and Photosystem II:a)b)

6. (pt=2) Describe the role of oxygen (O2) in photosynthesis:______

7. (pt=7) What are the labels for A)______B)______C)______D)______E)______F)______G)______

8. (pt=4) What are sources of energy in the light reactions of photosynthesis (list at least 3)a)______b)______c)______

9. (pt=5) How does electrons get stored on carbon dioxide? Use the terms RuBP, Rubisco, PGA, G3P, ATP, NADPH______31 pt

10. (pt=4) Explain what happens in glycolysis using the terms glucose, G3P, ATP, NAD+, NADH, pyruvate:______

11. (pt=2) Why is it important for the mitochondria to have a double membrane?______

12. (pt=4) What’s the name of the process (A) illustrated above? ______What happens to the NADH?______What happens to the CO2?______

13. (pt=4) What are two differences between DNA and RNA?a)______b)______

14. (pt=4) What is it about the DNA molecule that makes mistakes very rare? (2 major reasons)a)______b)______

15. (pt=1) In which phase does DNA replication occur in the cell cycle?______

16. (pt=3) What is one phase of mitosis (term or sketch): ______Speculate why you think this phase evolved the way it did:______

17. (pt=3) What is another phase of mitosis (term or sketch): ______Speculate why you think this phase evolved the way it did:______56 pt

18. (pt=2) What is the one gene – one enzyme (polypeptide) hypothesis?______

19. (pt=6) What is A______B______C______Going from A to B is called:______Going from B to C is called ______What is D called?______

20. (pt=6) What are 2 primary structures seen in A? a) ______b) ______If the codon in A is GCA, what is the anit-codon? ______What is the amino acid?______What is the primary process seen in B? ______

70pt

21. (pt=3) Sexual reproduction always requires a (diploid haploid – circle one) cell becoming a ______cell after ______and then becoming a ______cell after ______

22. (pt=5) Make a sketch of crossing-over and label chromosome, homologous chromosome, centromere, tetrad, chromatid.

23. (pt=3) Make a sketch of anaphase I in meiosis showing 3 chromosomes. Be sure to show the proper number of chromatids per chromosome.

24. (pt=3) What’s the relationship between the Law of Independent Assortment and Meiosis?______

25. (pt=3) A pea plant having purple flowers is pollinated with pollen from another pea plant having purple flowers. 25% of the seed produced by this cross produces pea plants with white flowers. What can you conclude about the genetic make-up of the parent plants in relation to flower color?______87 pt

26. (pt=3) What’s the relationship between level of taxonomic classification (Kingdom=high; species=low) and a common ancestor? ______

27. (pt=3) Make a sketch of a virus. Label its 2 key structures:

28. (pt=3) How does a bacterium differ from a virus?______

29. (pt=2) What do viruses, bacteria, and Protista all have in common?______

30. (pt=1) What is one important role of bacteria in the food web:______

31. (pt=1) What is one example of a Protista that you can find in the woods:______