BI 171 - Fourth Exam - 2003
Links go to pertinent sections of book
Place the letter of the choice that best answers the question on the line to the left.
_______ 1. Pheromones and neurotransmitters are both types of
_______ 2. The bonds used for energy in biological systems were originally
a. Primordial soup
_______ 3. The second law of thermodynamics is connected to which statement?
a. Materials in a food chain get recycled
_______ 4. Ferredoxin is an important molecule in
b. Aerobic respiration
_______ 5. When chlorophyll molecules lose electrons, they are
b. Undergoing kinetic conversion
_______ 6. Helicase is an enzyme involved in
a. Microtubule production during meiosis
_______ 7. An acrosome should contain
_______ 8. Haploid cells are first produced by
b. Meiosis I
c. Meiosis II
_______ 9. Nitrogenous wastes result from processing of
_______10. Which are involved at the very beginning of photosynthesis and the very end
of aerobic respiration?
a. Oxygen & Water
b. Carbon Dioxide & Water
_______ 11. Which processes are entirely confined to particular organelles?
a. Aerobic respiration & photosynthesis
b. Aerobic respiration & replication
_______ 12. Differentiation is a brought about by a change in
a. Tissue type
b. Gene expression
c. Enzyme inhibition
_______ 13. In most eukaryote organisms, most ATP is made from what sub-process?
a. Electron transport chain
_______ 14. Prior to cell division, chromosomes in prokaryotes attach to
a. Each other
c. Spindle fibers
_______ 15. Group transfer potential is an important aspect of
a. Food webs
_______ 16. Which should be true of any individual in a monoecious species?
a. It should produce both sperm and egg cells
_______ 17. Which would be a chemotaxis?
a. Spindle fibers attaching to centromeres
_______ 18. Which is the true statement?
a. Photosynthesizers altogether weigh more than other organisms,
Pick NINE questions to answer in the spaces provided.
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.
Several types of human cells never undergo mitosis in adults. What are two, for Three Points Each?
How do spindle fibers extend and retract across a cell - what makes them get longer and shorter?
What cell structure apparently has not been given an "official" name? Three Points.
In what two ways does phosphorylation probably work to help change other molecules? Four Points Each.
Why exactly do fats contain so many calories? Three Points.
Why is it important that a sperm tail not get into the egg cell? Four Points.