Station 1:
Photosynthesis
1. What are the three inputs to photosynthesis?
Carbon dioxide, water, and sunlight
2. What is another name for the sugar produced by
photosynthesis?
Glucose
3. Where in the cell does photosynthesis occur?
Chloroplasts
4. What process is the “opposite” of photosynthesis?
Respiration
5. What are the three outputs of the process in question #4?
Carbon dioxide, water, and ATP
6. Where in the cell does #4 occur?
Mitochondria
7. Which came first, photosynthesis or its “opposite”? (#4)
Photosynthesis
8. In most ecosystems, where does the energy ultimately come
from?
Sun
9. (True/False) Only animals use the process in #4. False
Station 2: Food
Chains and Webs
10. What is the name of something that makes its own food?
Producer
11. If an organism is at the top of a food chain and is not
eaten by anything else, what do we call it?
Apex predator
12. In a food web, are there more organisms of the type in
question 10 or question 11?
Of type 10 (producers)
13. What is another term for “ecological level” in a food
chain or web?
Trophic level
14. Why do we use food webs rather than food chains?
More accurate
15. What would we call the grasshopper in this diagram?
Primary consumer
Station 3: Biomass
and Energy
16. Do organisms at the top or bottom of a food chain have
more biomass?
Bottom
17. About what percentage of energy makes it from one
ecological level to another?
10%
18. Place the organisms in a suitable location on the
energy/biomass pyramid (think of it like a food chain; what
goes on bottom?):
 Wheat
 Hawk
 Snake
 Mouse
 Grasshopper
19. If you have 5 hawks in the ecosystem from #18, about
how many snakes would you need to support them?
50
20. What form does most waste energy take? Heat
Station 4: Organism
Relationships
21. What is it called when two organisms are living in close
physical association (the word means “together life”)?
Symbiosis
22. What do we call the kind of relationship when both of
the organisms are receiving a benefit?
Mutualism
23. Cockroaches have adapted to live around humans.
Humans aren’t hurt by this, but the cockroaches have
become very successful. How would you classify this type of
relationship?
Commensalism
24. Leeches are a water-dwelling organism that attach to
animals and suck their blood. How would you classify this
type of relationship?
Parasitism
25. What are some of the benefits of cooperating with
another species?
Answers vary; protection, access to new resources, etc.
26. What might be some of the downsides of cooperating
with another species? (Think of the Prisoner’s Dilemma
game.) Answers vary; being taken advantage of, etc.
Station 5: Population
27. How do we define a population in biology?
Organisms in same area, of same species, that interbreed
28. What is the term for how many viable offspring an
organism has?
Fitness
29. What are two common restrictions on population
growth? (We talked about several)
Resources, living space, predators, parasites, disease
30. What happens to a population if it outgrows its
resources? (What happened in “Oh Deer!” when most of the
class was deer?)
It crashes downward
31. If the restrictions on a population are lifted what
happens?
It goes up exponentially
32. What is the name of the scientist who first investigated
population theory?
Thomas Malthus
33. Which of the graphs below is a reasonable depiction of
what populations look like over time?
Station 6: Human
Impact
34. What is the greenhouse effect? Which gas is most
responsible?
Heat being trapped in the atmosphere. Carbon dioxide.
35. What does too much sewage/fertilizer in the water lead
to?
Algal blooms (red tides)
36. What is it called when a large percentage of organisms
die off in a short period of time? About how many times has
this happened in the history of the Earth?
Mass extinction. 5 times.
37. T/F: Most organisms that have ever lived are extinct.
True
38. Review: Classify each resource as renewable or nonrenewable:
a. Petroleum Non-renewable
b. Wheat Renewable
c. Sunlight Renewable
d. Coal Non-renewable
e. Fish Renewable
f. Diamonds Non-renewable