Practice questions for Bio 100 Exam 1
1. What is the possible explanation for a series of observations?
a.
guess
b.
hypothesis
c.
theory
d.
hunch
e.
law
2. Which of the following best describes steps of scientific process in a logical order?
a.
observation, hypothesis, experiment, conclusion
b.
observation, hypothesis, experiment, absolute proof
c.
guess, hypothesis, conclusion, experiment
d.
experiment, observation, hypothesis, conclusion
3. Which of the following is not able to capture nitrogen gas from the atmosphere and convert it into compounds
usable by living organisms?
a.
plants
b.
animals
c.
Neither plants nor animals can convert nitrogen gas to useful compounds
d.
bacteria
4. Spiders eat insects and other tiny animals that get trapped in their webs. What is the lowest trophic level a spider
could occupy?
a.
producer
b.
herbivore
c.
primary carnivore
d.
secondary carnivore
5. What are some of the differences between viruses and cells?
6. You do two mixing experiments in an artificial pond with different species of plankton:
Experiment 1 -- Mix species A and B
Experiment 2 -- Mix species C and D
At the end of experiment 1, only plankton of species B can be found in the pond; at the end of experiment 2, you can
find approximately equal numbers of individuals of species C and D.
What is happening in each experiment?
Which 2 species are likely to have the most similar niches?
7. An organism's role or job description is its
a. habitat
b. niche
8. Which of the following is true about keystone species?
a. they are always the largest species in a community
b. they are always the top predator
c. they never interact with other species
d. they maintain diversity within the community
9. Why must elements (chemicals) of earth be recycled? What chemical cycles have you studied?
10.What organisms capture carbon dioxide? What do they need besides carbon dioxide and water to manufacture
sugar?
11.What are 3 types of organisms that are involved in the nitrogen cycle? What type of organism captures nitrogen
gas and gives off a nitrogen product that other organisms can utilize?
12. What are some of the roles of bacteria that we have discussed or are in your reading, or you know about from
other sources in your life? You should know at least 3.
13. Practice comparing and contrasting related terms such as: habitat/niche, producer/consumer, hypothesis/theory,
mutualism/commensalism/ parasitism. Think of other sets of related terms.