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WorksheetsCh. 3 Review
Total questions: 28
Worksheet time: 26mins
Plants utilize a portion of their gross primary productivity (GPP) for cellular respiration.
True
False
A positive feedback loop causes a system to change in the opposite direction from which it is moving.
True
False
Lightning is one of the natural mechanisms by which atmospheric nitrogen is converted to ammonia or ammonium ions.
True
False
The law of conservation of matter states that whenever matter undergoes a physical or chemical change, ____.
atoms can be created and destroyed
atoms can be destroyed and recombined
atoms cannot be created or destroyed
atoms can be created but not destroyed
atoms can be destroyed but not created
Food chains and food webs show how producers, consumers, and decomposers are connected to one another as chemical energy flows through different ____ in an ecosystem.
energy pyramids
trophic levels
biospheres
life-support systems
abiotic components
Which of the following best represents the process of photosynthesis?
carbon dioxide + glucose + solar energy → water + oxygen
carbon dioxide + water + solar energy → glucose + oxygen
oxygen + glucose + solar energy → carbon dioxide + water
oxygen + glucose → solar energy + carbon dioxide + water
carbon dioxide + water → solar energy + glucose + oxygen
A group of individuals of the same species living in a particular place is a(n) ____.
ecosystem
population
community
organism
biosphere
Gross primary productivity (GPP) is the rate at which ____.
producers convert radiant energy into chemical energy
producers use stored chemical energy through cellular respiration
producers make chemical energy potentially available to consumers
consumers convert and store chemical energy obtained from producers
consumers use stored chemical energy to fuel life processes
Which statement best describes the first law of thermodynamics?
Atoms cannot be created or destroyed.
Energy cannot be created or destroyed.
Heat is a form of kinetic energy.
Solar energy is converted into chemical energy in living systems.
Some energy always dissipates during physical and chemical changes.
Matter is best described as ____.
thermodynamic
something that has the capacity to do work
positively charged
something that can produce change
anything that has mass and takes up space
Which of the following best represents the process of aerobic respiration?
glucose + carbon dioxide → oxygen + water + energy
glucose + oxygen → carbon dioxide + water + energy
energy + oxygen → carbon dioxide + water + glucose
water + glucose → oxygen + carbon dioxide + energy
energy + glucose + oxygen → carbon dioxide + water
A thermostat set to 62°F turns on the furnace when a house cools below that temperature, and shuts the furnace off when a house warms above that temperature. This is an example of a simple ____.
positive feedback loop
negative feedback loop
system loop
tipping point
system throughput
Photosynthesis is performed by ____.
heterotrophs
producers
decomposers
detritivores
herbivores
Bacteria and fungi are typically categorized as ____.
autotrophs
producers
primary consumers
tertiary consumers
decomposers
If the biomass of flowers that support a community of butterflies was known to contain 100,000 units of energy, and certain bird species were eating the butterflies that ate the flowers, what amount of energy, on average, could be expected to be transferred to the birds?
10 units of energy
100 units of energy
1,000 units of energy
10,000 units of energy
50,000 units of energy
A positive feedback loop ____.
increases a change to a system
always results in a beneficial change to a system
decreases a change to a system
never results in a beneficial change to a system
stabilizes a system
About how much energy is transferred from one trophic level to the next?
0%
10%
35%
65%
90%
A sequence of organisms, each of which serves as a source of nutrients or energy for the next, is called a(n) _____________________.
food chain
habitat
ecosystem
population
The ____________________ occupies those parts of the atmosphere, hydrosphere, and geosphere where life is found.
biosphere
lithosphere
stratosphere
ionosphere
A(n) ______________________________ occurs when an output feeds back into the system and causes its direction to reverse.
Negative feedback loop
Positive feedback loop
Equilibrium state
Dynamic equilibrium
21. A(n) ____________________ is a set of components that function and interact in some regular way.
system
element
process
resource
____________________ is the rate at which an ecosystem’s producers (usually plants) convert solar energy into chemical energy stored in compounds found in their tissues, not accounting for the use of chemical energy through aerobic respiration.
Gross primary productivity (GPP)
Net primary productivity (NPP)
Secondary productivity
Respiratory loss
23. Primary consumers and producers are two examples of ____________________ levels, a way to classify living organisms based on their source of nutrients.
trophic
genetic
climatic
behavioral
The law of ____________________ of matter states that whenever matter undergoes a physical or chemical change, no atoms are created or destroyed.
conservation
expansion
reduction
compression
Which of the following organisms is considered a primary consumer in a typical food chain?
Oak tree
Mushroom
Grasshopper
Hawk
What term describes the process by which decomposers break down dead organic matter and release nutrients back into the environment?
Decomposition
Photosynthesis
Transpiration
Respiration
Which of the following best describes a positive feedback loop in an ecosystem?
A process that recycles matter without changing the system
A process that reduces the flow of energy through trophic levels
A process that stabilizes the system and maintains equilibrium
A process that amplifies changes and drives the system further from its original state
Which organisms will you find the most of in an ecosystem?
Consumer
Producer
Decomposer
