BI 171 - Second Exam - 2005
Links go to relevant passages in the online book
Place the letter of the choice that
best answers the question on the line to the left.
_______ 1. Minerals are most likely to be found in
b. Prosthetic groups
_______ 2. Isotopes are similar except for their
b. Overall charges
_______ 3. Denaturing refers to the partial to complete unwinding of which type of molecule?
_______ 4. A solution with a pH of 6 is _______ when compared to one with a pH of 8.
b. 25% less acidic
c. 100 times more acidic
_______ 5. Which 2 functional groups are the same thing in different places?
a. Alcohols & aldehydes
b. Alcohols & amines
_______ 6. The Hardy-Weinberg rule requires a large population because that
a. Reduces the role of chance
_______ 7. Helicase should be a
_______ 8. A hydration shell forms during the formation of
a. A solution
b. A polymer
c. Surface tension
_______ 9. A receptor that will form a complex with only one particular molecule is an example of
a. Quaternary structure
b. Binary structure
_______ 10. Ethyl alcohol, compared to methyl alcohol, should have
a. One less carbon
b. One more carbon
_______ 11. Which feature might evolve along a Lamarckian pattern?
a. Neck length
b. Japanese slang
c. Color perception
_______ 12. Water is the most dense
a. As ice
b. When boiling
c. At 4o C
_______ 13. Digestion is mostly a process involving
b. Cellular respiration
c. Dehydration synthesis
_______ 14. On the Periodic Table, which radicals would be least reactive?
a. Column 8
b. Column 1
c. Column 4
_______ 15. Panspermia is a hypothesis about
a. Genetic sharing
b. Sexual selection
c. Electron transfer
_______ 16. Which is the best reason for molecular oxygen (O2) to contain a double bond?
a. There are 2 isotopes of oxygen
b. Oxygen contains 8 protons
_______ 17. Ionic bonds are rarely found at work in living systems because
a. There are few ions present
_______ 18. Which is probably the proper order for which each development appeared?
a. Prokaryote, eukaryote, multicelled, land organisms
Pick NINE questions to answer in the spaces
Select and answer completely any four
of the following questions.
BONUS QUESTIONS. Answer as many or as few as you wish. You can't lose points on the rest of the exam by getting these wrong. Partial credit is possible.
Alternation of generations has three major applications in living things. For Three Points each, give one example of a species or type of organism from each application.
Hardy and Weinberg developed their famous rule to explain how something specific should work. What was it? Three Points.
There is a marker in the fossil record for the rise of photosynthesis in the world. What is it? Three Points.
Why might the "Snowball" period have been the critical happening for the development of Life on Earth? Three Points
Land plants from the very beginning required a symbiosis with what organisms (Two Points) that could perform what function (Three Points)?
Which free radical is most commonly produced in our own chemistry? Three Points.
What do the numbers of the pH scale actually represent? Three Points.
At what point is a sugar molecule most likely to open? Three Points.
In any account of Life’s origins, what point about chirality needs to be addressed? Three Points.