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Biology 20 - Ecology and Evolution Exam questions and answers
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Biology 20 - Ecology and Evolution Exam questions and answersHeterotroph - ✔✔An organism that cannot produce its own food.
First law of Thermodynamics - ✔✔Energy can not be created or destroyed, only
converted from one form to another.
Ecosystem - ✔✔Made up of all of the organisms that live in an area and the physical
environment of the area.
Cellular respiration - ✔✔The energy required to allow organisms to grow and reproduce
is released through the process of ________ ___________.
Tertiary consumer - ✔✔A consumer that is at the top of the food chain.
C6H12O6+602 becomes 6CO2+6H20 - ✔✔Chemical formula for cellular respiration.
Feces, dead organisms, dead plant matter - ✔✔What are three examples of waste
matter?
No - ✔✔Is any energy conversion 100% efficient?
Cellular respiration. - ✔✔Glucose + Oxygen = Carbon Dioxide + Water
Herbivores or Primary Consumers - ✔✔Organisms that only eat plants.
6CO2+6H2O becomes C6H12O6+6O2 - ✔✔Chemical formula for Photosynthesis.
Kilojoules - ✔✔What are the units on an energy pyramid?
Chemosynthesis - ✔✔What process is used by deep sea organisms to convert
hydrogen sulfide into sulfuric acid?
Four - ✔✔How many trophic levels are there?
51% - ✔✔What percentage of light reaches the earths surface to warm the planet?
Chemosynthesis - ✔✔When bacteria captures energy stored in the bonds of molecules,
in the absence of light.
1 to 2 % - ✔✔How much of the total radiant energy that reaches the Earth that is
converted into chemical energy?
, Producers, primary consumers, secondary consumers, tertiary consumers - ✔✔What
are the four types of food producers/consumers?
Food chain - ✔✔A model that shows the linear pathways through which food is
transferred from producers to higher trophic levels.
Closed - ✔✔The Earth is a ______ system with regards to matter. (with the exception of
meteorites)
Consumers - ✔✔Organisms that cannot make their own food, and must rely on
producers.
Ecosystem - ✔✔An _________ is made up of all the organisms that live in an area and
the physical environment of that area. This includes living and non-living factors.
Sulfuric acid - ✔✔H2SO4
Biomass - ✔✔The weight of organisms at each trophic level.
Albedo - ✔✔The degree of reflectability of a surface.
Feces, dead organisms, dead plant matter - ✔✔Examples of waste matter.
H2S - ✔✔Hydrogen sulfide.
Pyramid of Energy - ✔✔Shows the total amount of energy that is transferred through
each trophic level.
10% - ✔✔Amount of energy passed on when one organism consumes another.
Decomposers - ✔✔A consumer group that obtains energy rich molecules by eating
waste matter.
Food Web - ✔✔A model of food/energy transfer in an ecosystem that shows the
connections among food chains.
Carnivores - ✔✔Animals that eat other animals.
Numbers Pyramids - ✔✔Does not take into account the size or organisms.
Autotrophs - ✔✔Organisms that use the Sun's energy to produce food for themselves
by the process of photosynthesis are known as __________ or producers, which means
"self-feeders".
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