Download (pt=4) Label the following diagram with the following terms: ATP

Name ______________________________________
FES 100 - Introduction to Forest Biology
Exam 2: 90 points October 28, 2009
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.
Write your name on this page now!!!!!!
1.
(pt=4)
What is the overall equation for photosynthesis (light and dark reactions combined)? Be
sure to show where the electrons come from and where they go to.
2.
(pt=4)
Label the following diagram with the following terms: ATP, electrons, hydrogen protons
(+), NADPH, oxygen, Photosytem I, Photosystem II, water
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3.
(pt=2)
What is the source of energy that ATP synthase needs to catalyze the formation of ATP in
the chloroplast?
________________________________________________________________________________
________________________________________________________________________________
4.
(pt=4)
Make a sketch of a chloroplast with thylakoids and grana. Indicate where the light
reactions occur and where the dark reactions occur:
5.
(pt=3)
What is the most common enzyme in the world? ____________________________
Why must this be so?
________________________________________________________________________________
________________________________________________________________________________
6.
(pt=2)
What does PGA (phosphoglycerate) need to form G3P (glyceraldehyde-3-phosphate)? (2
primary chemical items)
a________________________________________________________________________________
b________________________________________________________________________________
2
7.
(pt=3)
What are 2 primary uses of G3P after it forms in the dark cycle?
a________________________________________________________________________________
________________________________________________________________________________
b________________________________________________________________________________
________________________________________________________________________________
8.
(pt=4)
Make a sketch of a mitochondrial cross section. Indicate where glycolysis occurs, where
stage III (Krebs cycle) occurs, and where oxidative phosphorylation occurs.
9.
(pt=2)
What is the source of energy that ATP synthase needs to catalyze the formation of ATP in
the mitochondria?
________________________________________________________________________________
________________________________________________________________________________
10. (pt=1)
What is on glucose that is essential for respiration?
________________________________________________________________________________
11. (pt=1)
What is pulling electrons off the electron transport chain in mitochondria during
respiration?
________________________________________________________________________________
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12. (pt=1)
In fermentation, which chemical compound is used to accept electrons so that glycolysis
can continue?
________________________________________________________________________________
13. (pt=2)
Indicate which nucleotides will pair-up with each other:
A
B
C
D
A pairs with ______
________ pairs with _________
14. (pt=6)
Describe the basic process by which DNA replication occurs. Use the terms: Base pairs,
DNA polymerases, replication origins, chromatid, chromosome, covalent bonds, hydrogen bonds.
15. (pt=2)
Mutations are a potential source of variation for populations, but Eukaryotic cells have
evolved to minimize the chance of mutations in the DNA molecule. Why? (one reason)
________________________________________________________________________________
________________________________________________________________________________
What is present in the cell to minimize the chances of mutations? ____________________________
_________________________________________________________________________________
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16. (pt=6)
Sketch and label the basic phases of mitosis:
17. (pt=1)
When does DNA replication occur during a cell cycle?
________________________________________________________________________________
________________________________________________________________________________
18. (pt=2)
If the nucleotide sequence on DNA is TCA, what will be the amino acid associated with
this sequence? _______________
Codon – Amino Acid
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19. (pt=6)
Label the following diagram with anticodon, amino acid, codon, intron, mRNA,
nucleotide, ribosome, RNA polymerase, tRNA.
20. (pt=1)
Which of the following is (are) not associated with RNA?
ribose b) thymine c) uracil d) phosphates e) single-strandedness
21. (pt=1)
How many nucleotides are needed to code for a protein with 450 amino acids?
_________________________________________
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22. (pt=3)
Why does there need to be 3 nucleotides in a codon and not 2?
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
23. (pt=3)
Does it matter how many sets of chromosomes a cell has before meiosis begins? Explain.
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
24. (pt=3)
Give 1 stages in which genetic variation is increased during the sexual reproductive cycle
of eukaryotic organisms:
Stage:________________________________________________________________________________
How does this increase variation?__________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
25. (pt=2)
Why must there be 4 haploid cells at the end of meiosis?
________________________________________________________________________________
________________________________________________________________________________
________________________________________________________________________________
26. (pt=2)
Give one stage found in meiosis: ______________________
What is the purpose of this stage?_____________________________________________________
________________________________________________________________________________
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27. (pt=5)
Use principles of meiosis and Law of Segregation explain how two pea plants with purple
flowers (dominant) and heterozygous for that allele can produce seeds in which 25% of the new seedlings
will have white flowers (recessive). Use a Punnett Square to help explain what is happening.
28. (pt=4)
Describe the relationship between the following terms: Homologous, Heterozygous,
Homozygous, Allele, Phenotype
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29. (pt=2)
Sort the following terms in order going from most general to most specific:
Class, Domain, Family, Genus, Kingdom, Order, Phylum, Species
30. (pt=2)
What are 2 reasons why viruses can be considered a life form:
a________________________________________________________________________________
b________________________________________________________________________________
31. (pt=3)
What are 3 reason that help explain why bacteria are the most abundant life form on earth:
a________________________________________________________________________________
b________________________________________________________________________________
c________________________________________________________________________________
32. (pt=1)
Where are you likely to find an Archae? (give an example)
________________________________________________________________________________
________________________________________________________________________________
33. (pt=2)
What is an example of a protist? ___________________________________
Why is it important to an ecosystem (give one reason)?
________________________________________________________________________________
________________________________________________________________________________
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