A) tertiary B) quaternary C) secondary D) primary
8) A friend of yours calls to say that his car would not start this morning. He asks for your help. You
say that you think the battery must be dead, and that if so, then jump-starting the car from a good
battery will solve the problem. In doing so, you are _____.
A) only stating a hypothesis for why the car won't start
B) stating both a specific hypothesis about why the car won't start and a prediction of the
hypothesis
C) searching for observations that might inspire a hypothesis for why the car won't start
D) performing an experimental test of a hypothesis for why the car won't start
9) Consider the following reaction at equilibrium: CO2 + H2O H2CO3. What would be the effect of
adding additional H2CO3?
A) The amounts of CO2 and H2O would decrease.
B) The amounts of CO2 and H2O would increase.
C) Nothing would happen, because the reactants and products are in equilibrium.
D) It would drive the equilibrium dynamics to the right.
10) Recall the experiment on ant navigation. What parameters would have to be held constant for the
test group of 75 ants in order to run a controlled experiment?
A) stride number
B) Stride number, leg length, and environmental temperature would all have to be held
constant.
C) leg length
D) all variables except leg length (and therefore stride length)
11) Which of the following observations led to the conclusion that the food competition hypothesis for
giraffe neck length might not be correct?
A) In certain populations at certain times of year, only male giraffes feed high in trees.
B) Male and female giraffes spend most of their time feeding low in trees.
C) Giraffes rarely die of starvation, so food availability is unimportant.
D) In the populations studied to date, giraffes never feed high in trees.
212) You need to write down information about a molecule, but need to indicate only which atoms it
contains and how many of each. Which representation would work best?
A) space-filling model B) structural formula
C) ball-and-stick model D) molecular formula