Question 13
Respiration has the greatest effect on which cycle?
a
sulfur cycle
b
nitrogen cycle
c
carbon cycle
d
phosphorus cycle
Question 14
Photosynthesis and cellular respiration are the driving biological forces behind which of the following cycles?
a
bi cycle
b
carbon cycle
c
cell cycle
d
water cycle
Question 15
Monique is making a drawing in her notes to summarize the carbon cycle. What is the only step in Monique's drawing that should show carbon dioxide from the atmosphere being taken in and used by living organisms?
a
fossil fuel formation
b
combustion
c
cellular respiration
d
photosynthesis
Question 16
a
Synthesis: turning CO2 from the atmosphere into organic molecules
b
Photosynthesis: absorbing CO2
c
Combustion: releasing CO2
d
Decomposition: CO2 into the soil
Question 17
The oxygen and carbon dioxide exchange that occurs during photosynthesis and respiration help to
a
keep a stable level of carbon dioxide and atmospheric oxygen.
b
decrease the levels of carbon dioxide found in inorganic matter.
c
increase carbon dioxide and decrease oxygen in the hydrosphere.
d
remove carbon dioxide from the biosphere and replace it with oxygen.
Question 18
On average, how much of the available energy from one trophic level is transferred to the next trophic level in a food chain?
Energy Transformations | #GoOpenVA
a
1%
b
10%
c
50%
d
90%
Question 19
Which of the following explain why elements such as carbon that make up organic molecules are not permanently removed from the environment?
Pun intended — It's the carbon cycle
a
They are cycled through ecosystems.
b
They are replenished by sunlight.
c
They are replaced by volcanic eruptions.
d
They are constantly produced from soil nutients.
Question 20
In the carbon cycle, producers take in the gas _______________.
a
carbon dioxide
b
nitrogen
c
oxygen
d
carbon monoxide
Question 21
The pyramid shows how biomass changes between trophic levels of an ecosystem.
image b95050928618458399679f086eb24478
Which explains how the biomass at the top of the pyramid will change if a fire destroys a large percentage of the grasses in this ecosystem?
a
It will increase because the amount of energy lost as heat between the first trophic level and second trophic level will decrease.
b
It will increase because the fire increases the efficiency of energy transfer and prey aquisition at higher trophic levels.
c
It will decrease because the amount of chemical energy photosynthesis generates will not be enough to support higher trophic levels.
d
It will decrease because there will be a greater number of organisms at the second trophic level to support the higher trophic levels.
Question 22
What would happen if plants did not have enough carbon dioxide to engage in photosynthesis?
a
Plants would not be able to grow but would be able to produce oxygen for animals to breathe.
b
Plants would be able to grow and produce oxygen for animals to breathe.
c
Plants would be able to grow but would not be able to produce oxygen for animals to breathe.
d
Plants would not be able to grow and produce oxygen for animals to breathe.
Question 23
Greenhouse Effect: Keeping the Balance | NASA Climate Kids
And how would greater amounts of this compound impact plant growth, and why?
a
Carbon dioxide - decrease plant growth, due to increased respiration.
b
ATP - decrease plant growth, due to decreased carbon rich compounds and accelerated absorption.
c
Water - increase plant growth, due to greater availability of this carbon rich reactant.
d
Carbon dioxide - increase plant growth, due to greater availability of this essential reactant.
Question 24
The graphic shows a diagram of a carbon cycle that a student drew.
Which mistake did the student make in the diagram?
a
Animals do not release carbon dioxide into the atmosphere during respiration.
b
Plants do not remove carbon dioxide from the atmosphere during respiration.
c
Carbon dioxide is not removed from the atmosphere during photosynthesis.
d
Factory and vehicle emissions do not release carbon dioxide into the atmosphere.
Question 25
Photosynthesis is the name given to a series of biochemical reactions which _____________.
a
uses glucose to make oxygen and water
b
uses glucose to make ATP
c
makes ATP by using oxygen gas
d
makes glucose from carbon dioxide and water
Question 26
Which statement below best summarizes the likely effects on the carbon cycle of clear-cutting, or removing all the trees, in vast areas of a forest?
a
Clear-cutting would limit the amount of nitrogen-fixing bacteria in the area.
b
Clear-cutting would increase the amount of carbon dioxide found in the atmosphere.
c
Clear-cutting would reduce the amount of carbon dioxide found in the atmosphere.
d
Clear-cutting would allow for secondary succession of smaller plants and more carbon.
Question 27
Photosynthesis and cellular respiration are the driving forces behind which of the following cycles?
a
nitrogen cycle
b
cell cycle
c
bi cycle
d
carbon cycle
Question 28
Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?
a
The carbon cycle
b
The water cycle
c
The nitrogen cycle
d
The phosphorous cycle
Question 13: c (carbon cycle)
Question 14: d (water cycle)
Question 15: d (photosynthesis)
Question 16: b (Photosynthesis: absorbing CO2)
Question 17: a (keep a stable level of carbon dioxide and atmospheric oxygen)
Question 18: c (50%)
Question 19: a (They are cycled through ecosystems)
Question 20: a (carbon dioxide)
Question 21: c (It will decrease because the amount of chemical energy photosynthesis generates will not be enough to support higher trophic levels.)
Question 22: d (Plants would not be able to grow and produce oxygen for animals to breathe.)
Question 23: d (Carbon dioxide - increase plant growth, due to greater availability of this essential reactant.)
Question 24: b (Plants do not remove carbon dioxide from the atmosphere during respiration.)
Question 25: d (makes glucose from carbon dioxide and water)
Question 26: b (Clear-cutting would increase the amount of carbon dioxide found in the atmosphere.)
Question 27: d (carbon cycle)
Question 28: a (The carbon cycle)