BI 171- Second Exam - 2004
Links go from numbers to pertinent passages in the book.
Place the letter of the choice that
best answers the question on the line to the left.
_______ 1. Cells use _______ as a main fuel, but ________ as the actual source of energy for processes
_______ 2. Various types of minerals are commonly found in
c. Nucleic acids
_______ 3. Which are involved in getting proteins properly folded?
a. Transfer RNA
_______ 4. Different isotopes would have different
c. Element symbols
_______5. Compared to an unsaturated molecule, a saturated version should have more
a. Ring structures
b. Double bonds
_______6. For very simple hydrocarbons, the naming order goes
a. Prop-, eth-, meth-
b. Eth-, meth-, prop-
_______7. Alternation of generations often includes a body form change particularly for
_______8. Which has uracil as a component?
a. Mitochondrial DNA
_______9. The active ingredient in the waterproofing ScotchGuard spray is
_______10. Which usually exist as one to a few molecular ring structures?
_______11. Hormones are likely to be
a. Ions or radicals
b. Lipids or nucleic acids
_______12. Large molecules are often held together in particular shapes because they are
b. Triple bonded
_______13. In comparison to a solution with a pH of 9, one thatís pH 11 would be
a. 4 times as acidic
b. 4 times as basic
_______14. Evolutionary patterns that follow Lamarckís rules may occur with
a. Sexual reproduction
b. Asexual reproduction
_______15. When liver cells build starches, the process used is
a. Dehydration synthesis
_______16. Enzymes are most commonly
_______17. The periodic table has "bridges" below a certain point because in larger atoms
a. There are many more isotopes
_______18. An amino acid is made up of
a. An amino group between a carboxyl and a variable carbon group
Pick NINE questions to answer in the spaces
Select and answer completely any four
of the following 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.
Hardy and Weinberg developed their rules to show that something that people assumed was not mathematically true. What was the assumption? Three Points.
Current research indicates that the development of exons and introns could have been a critical step in the evolution of Life on Earth. Why might they be so important? Four Points.
What symbiotic relationship was probably necessary for the movement of plants onto the land? Three Points.
How could celery have negative calories? Three Points.
Why is alpha radiation less dangerous to people than gamma radiation? Three Points. (No references to The Hulk, please.)
What is it about fiber that makes it an effective stool softener? Four Points.
What types of materials are suspected of causing the molecular damage in our cells that makes us age? Three Points each.
Science fiction writers have thought that elements other than carbon might serve as the main atoms in alien living systems - based on what makes carbon work in our systems, where should they look for candidate elements? Four Points.