|Concepts of Biology (BIOL116) - Dr. S.G. Saupe; Biology Department, College of St. Benedict/St. John's University, Collegeville, MN 56321; firstname.lastname@example.org; http://www.employees.csbsju.edu/ssaupe/|
Energy - Study Guide
Reading: Purves et al. Chapter 55
The major goal of this unit is to provide you with an understanding of
the source, nature and mechanism of the movement of energy and nutrients in an
ecosystem. Specifically, upon
completion of this unit you should be able to:
the basic processes of photosynthesis and respiration
describe the basic model for energy flow and its biological consequences
Important Terms/Concepts: (be able to use conversationally)
for Thought and Study:
is the 10% Rule of Thumb? Why
is it called a rule and not a law?
is lost in the transfer between each trophic level.
Where does that energy go?
the equation for photosynthesis. Write
the equation for respiration. What
is the function of each process? Where
do they occur in the cell? In
what type of organisms? Could
life exist without one or the other?
and contrast food chains and food webs.
Which is more stable and why? Give
an example of each.
Can you use
these terms? producer, consumer, primary consumer, secondary consumer,
tertiary consumer, herbivore carnivore, primary carnivore, secondary
carnivore, detritivore, decomposer. Can you give examples of each?
Can you use these terms? producer, consumer, primary consumer, secondary consumer, tertiary consumer, herbivore carnivore, primary carnivore, secondary carnivore, detritivore, decomposer. Can you give examples of each?
the first and second laws of thermodynamics.
Relate their importance to energy flow.
what form does energy flow through food webs?
why energy flow is diagrammed as a pyramid.
Identify other aspects of ecosystems that can be described using the
pyramid model. Can any of these
pyramids be inverted?
the producers have 1000 units of energy, calculate the approx. amount of
energy in a tertiary consumer.
why most food chains are rarely more than 3-5 links.
why whales, hippos and apatosaurs are big.
why there are few carnivores larger than the "cats".
Some biologists consider it doubtful that T. rex was an active predator. Why?
is the principle of food size?
is energetically more efficient: a weasel or mouse? Explain.
cultural evolution can be related to the energy pyramid. Explain.
some future predictions concerning our energy future? Do you agree or
disagree with these?
Human cultural evolution can be related to the energy pyramid. Explain.
What are some future predictions concerning our energy future? Do you agree or disagree with these?
or attack the statement: In the
future, humans will probably eat less meat.
is biological magnification?
why DDT decimated the populations of ospreys and other birds of prey even
though it was sprayed in the environment in relatively low, non-toxic doses.
why it is true that conditions that control the growth of producers
ultimately control all the individuals in the ecosystem as well.
Why should you not eat too many, say lake trout, from Lake Superior?
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Last updated: April 22, 2004 � Copyright by SG Saupe