Which process in photosynthesis uses energy from the sun?(1 point)
Responses
combining carbon dioxide and hydrogen
combining carbon dioxide and hydrogen
splitting water into hydrogen and oxygen
splitting water into hydrogen and oxygen
releasing oxygen
releasing oxygen
absorbing carbon dioxide
absorbing carbon dioxide
splitting water into hydrogen and oxygen
A scientist fills a glass container with water and places an aquatic plant inside the container, then closes the lid and places the container in direct sunlight. The scientist observes small bubbles on the surfaces of the plant’s leaves on days 1 and 2, but no bubbles on day 3. The scientist concludes that the bubbles were caused by photosynthesis. Which substance should be added to the water in order for the bubbles to reappear?(1 point)
Responses
hydrogen gas
hydrogen gas
carbon dioxide
carbon dioxide
glucose
glucose
oxygen
carbon dioxide
ATP is(1 point)
Responses
a form of energy that cannot be stored
a form of energy that cannot be stored
stored during cellular respiration
stored during cellular respiration
released when carbon dioxide and water form glucose
released when carbon dioxide and water form glucose
a form of energy that can be used and stored
a form of energy that can be used and stored
a form of energy that can be used and stored
ATP stores some of the energy from glucose molecules during cellular respiration. How is the remaining energy from these glucose molecules released?(1 point)
Responses
Excess carbon dioxide
Excess carbon dioxide
Excess heat
Excess heat
Excess light
Excess light
Excess water
Excess heat
One molecule of glucose is recycled into ___ molecules of carbon dioxide during cellular respiration.(1 point)
Responses
6
6
1
1
12
12
2
2
6
Which role does photosynthesis play in the flow of energy? (1 point)
Responses
Photosynthesis allows plants to create energy for themselves to store and use for metabolism.
Photosynthesis allows plants to create energy for themselves to store and use for metabolism.
Photosynthesis provides radiant energy to all the organisms in the entire food chain.
Photosynthesis provides radiant energy to all the organisms in the entire food chain.
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
Photosynthesis is how plants break down glucose to use for energy.
Photosynthesis is how plants break down glucose to use for energy.
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
How does the carbon stored in the bodies of living organisms move into rocks?(1 point)
Responses
Living organisms decay, releasing carbon into the soil, and soil is compacted into rocks.
Living organisms decay, releasing carbon into the soil, and soil is compacted into rocks.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Carbon dioxide dissolves in ocean water and is slowly absorbed by rocks in the ocean.
Carbon dioxide dissolves in ocean water and is slowly absorbed by rocks in the ocean.
Living organisms decay and become fossils fuels, which eventually become rocks.
Carbon dioxide dissolves in ocean water and is slowly absorbed by rocks in the ocean.
The nitrogen cycle requires _____ to convert nitrogen to nitrites and nitrates.(1 point)
Responses
legumes
legumes
animals
animals
plants
plants
bacteria
bacteria
bacteria
The three steps of the nitrogen cycle in order, starting with nitrogen gas in the atmosphere, are(1 point)
Responses
nitrification, nitrogen fixation, and denitrification.
nitrification, nitrogen fixation, and denitrification.
denitrification, nitrification, and nitrogen fixation.
denitrification, nitrification, and nitrogen fixation.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, denitrification, and nitrification.
nitrogen fixation, denitrification, and nitrification.
nitrogen fixation, nitrification, and denitrification.
How do energy and matter move in ecosystems?(1 point)
Responses
Matter flows in one direction, and energy cycles through the environment.
Matter flows in one direction, and energy cycles through the environment.
Energy flows in one direction, and matter cycles through the environment.
Energy flows in one direction, and matter cycles through the environment.
Energy and matter cycle through the environment.
Energy and matter cycle through the environment.
Energy and matter flow in one direction.
Energy and matter flow in one direction.
Energy flows in one direction, and matter cycles through the environment.
Which statement is true?(1 point)
Responses
Food chains are the best depictions of feeding relationships because they show many ways that plants and animals are connected.
Food chains are the best depictions of feeding relationships because they show many ways that plants and animals are connected.
Food webs are the best depictions of feeding relationships because they show a single path for the flow of energy through an ecosystem.
Food webs are the best depictions of feeding relationships because they show a single path for the flow of energy through an ecosystem.
Food webs are the best depictions of feeding relationships because they show many ways that plants and animals are connected.
Food webs are the best depictions of feeding relationships because they show many ways that plants and animals are connected.
Food chains are the best depictions of feeding relationships because they show a simplified path for the flow of energy through an ecosystem.
Food chains are the best depictions of feeding relationships because they show a simplified path for the flow of energy through an ecosystem.