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This is the first test I gave in Spring 06.  It is to show you the style of questions you can expect.  However, in itself, it is a good study guide for some of the chapters we've covered.

1.         In a well-conceived experiment the role of a control is

A.    unnecessary if the hypothesis is well thought out.

B.    to compare a treated and untreated subject.

C.    to make statistical testing applicable.

D.    to rule out competing hypotheses.

E.     none of the above.

2.         Which of the following is considered a characteristic of living things?

A.    All living things reproduce.

B.    All living things use energy.

C.    All living things can respond to stimuli.

D.    All of the above are characteristics of living things.

E.     None of the above are characteristics of living things.

3.         Of the following, which is considered the most unifying theme in biology?

A.    taxonomy

B.    physiology

C.    ecology

D.    genetics

E.     evolution

4.         The best description of a hypothesis is

A.    an explanation based on previous observations and used to predict further experimentation.

B.    a series of scientific observations that can be repeatedly reproduced.

C.    a single hypothesis leads to formulation of a scientific theory

D.    an explanation for observations which is strictly a "guess" by the experimenter.

5.         Homeostasis may be described as

A.    ability of the living body to reproduce.

B.    the same as photosynthesis.

C.    maintenance of a constant internal environment.

D.    a continuous supply of energy for living things.

E.     the responsibility of only the nervous system.

6.         A scientific theory (like evolution)

A.    is so well tested that few scientists doubt its validity.

B.    requires many more additional observations before it can be generally accepted.

C.    consists of 'educated guesses'.

D.    is never subjected to further testing.

E.     forms the basis for the development of an hypothesis.

7.         Living organisms have many complex characteristics.  Which one of the following is shared by non-living objects as well?

A.    homeostasis

B.    tissues

C.    reproduction

D.    molecules

E.     organelles

8.         Which of the following statements is an observation and not a hypothesis?

A.    Canadian geese fly south in the winter.

B.    Black bears hibernate in the winter to avoid cold temperatures.

C.    Stress increases the risk of heart attack.

D.    The burning of coal has caused an increase in acid rain.

9.         Which of the following hypotheses cannot be tested by the scientific method?

A.    Mary uses the phone every day after school.

B.    Heart disease is genetically linked.

C.    The flowers growing on the west face of a mountain are more beautiful than those on the east face.

D.    Bob has the knowledge and skills to pass the exam for his driver's license.

10.      It is desirable that more than one individual be tested in an experiment, or that the experiment be performed many times because

A.    experimentation on just one individual may not give results which can be applied to everyone.

B.    the experimental individual may not be representative of the population as a whole.

C.    testing just once might produce results which are a 'fluke'.

D.    all of the above are valid reasons for having a large sample size or repeating an experiment.

11.      What happens when a hypothesis is neither supported nor discredited by one well-designed experiment?

A.    the experiment should be altered so that it more properly tests the hypothesis and yields results.

B.    the exact same experiment is repeated.

C.    the original observations and hypotheses become a theory.

D.    more variables are added to the experiment.

E.     the results are published.

12.      The proper order of objects, from simple to complex, is

A.    molecule, cell, tissue, organ, organism, population, community.

B.    cell, molecule, organ, tissue, organism, population, community.

C.    molecule, cell, organ, tissue, organism, population, community.

D.    molecule, cell, tissue, organ, population, organism, community.

E.     molecule, tissue, organ, cell, population, organism, community.

13.      To be of value in the scientific method, hypotheses must be

A.    established facts.

B.    testable.

C.    proven correct.

D.    popular.

14.      The phrase "survival of the fittest"  suggests that

A.    most organisms that reach sexual maturity also reproduce.

B.    the physical characteristics of individual members of each species do not vary much.

C.    most individual variation cannot be inherited.

D.    better-adapted individuals are more likely than others to survive and reproduce.

15.      Which of the following is homologous to the human's arm?

A.    wing of an insect.

B.    wing of a bird.

C.    body of a snake.

D.    fin of a fish.

E.     Tinkerbell's wings.

16.      Which of the following is NOT a feature of Darwin's theory of evolution by means of natural selection?

A.    Excess numbers of individual plants and animals are produced in every generation.

B.    All members of a population have an equal opportunity to reproduce.

C.    The environment cannot possible support all of the organisms produced in each generation.

D.    Variations, some of which are inheritable, occur in natural populations.

17.      In biological terms, "fitness" means

A.    having as many children as possible.

B.    successfully putting your genes into the next generation.

C.    being the strongest and fastest.

D.    being the smartest and richest.

E.     being the smartest, strongest, fastest, and richest.

18.      (From Discover magazine)  Which of the following statements is TRUE about bird flu?

A.    It has already infected thousands of people, but none yet in the US.

B.    There is an effective vaccine against it.

C.    There is an ample supply of the drug Tamiflu on hand.

D.    The current strain of flu is identical to the one that killed thousands in World War I.

E.     To become a pandemic, the flu virus must evolve the ability to be easily transmissible from human to human.  This has not happened yet.

19.      Which of the following is NOT an example of coevolution?

A.    flowers and their pollinators.

B.    predators become more effective hunters, and their prey evolve a better means of escape.

C.    plants and specialized plant eaters.

D.    plants that can be eaten by a variety of insects.

E.     plant defenses to insect predators.

20.      Animal breeders have developed dairy cattle that have increased milk production.  In this process, only the cows that produce the most milk are bred to give rise to the next generation of cattle.  This is an example of

A.    artificial selection.

B.    natural selection.

C.    a theory.

D.    a hypothesis.

E.     adaptation.

22.      This afternoon, as you relax over a few cool, refreshing beverages, the conversation with your friends drifts to what you've been studying in biology.  One of your friends says, "You know, I don't know how anyone can believe that evolution stuff.  After all, it's just a theory."  How will you explain to her that scientists use the word 'theory' in a different way than the general public does?  (5 pts)