Which process in photosynthesis uses energy from the sun?(1 point)
Responses
splitting water into hydrogen and oxygen
releasing oxygen
absorbing carbon dioxide
combining carbon dioxide and hydrogen
absorbing carbon dioxide
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
oxygen
glucose
hydrogen gas
carbon dioxide
carbon dioxide
ATP is(1 point)
Responses
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
stored during cellular respiration
stored during cellular respiration
a form of energy that cannot be stored
a form of energy that cannot be 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 water
Excess water
Excess heat
Excess heat
Excess light
Excess light
Excess heat
One molecule of glucose is recycled into ___ molecules of carbon dioxide during cellular respiration.(1 point)
Responses
2
2
1
1
6
6
12
12
6
Matter and Energy Unit Test
6 of 146 of 14 Items
Question
Which role does photosynthesis play in the flow of energy? (1 point)
Responses
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 is how plants break down glucose to use for energy.
Photosynthesis is how plants break down glucose to use for energy.
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 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 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 and become fossils fuels, which eventually become rocks.
Living organisms decay and become fossils fuels, which eventually become 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, 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.
The nitrogen cycle requires _____ to convert nitrogen to nitrites and nitrates.(1 point)
Responses
bacteria
bacteria
animals
animals
legumes
legumes
plants
plants
bacteria
The three steps of the nitrogen cycle in order, starting with nitrogen gas in the atmosphere, are(1 point)
Responses
nitrogen fixation, denitrification, and nitrification.
nitrogen fixation, denitrification, and nitrification.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, nitrification, and denitrification.
denitrification, nitrification, and nitrogen fixation.
denitrification, nitrification, and nitrogen fixation.
nitrification, nitrogen fixation, and denitrification.
nitrification, nitrogen fixation, and denitrification.
nitrogen fixation, nitrification, and denitrification.
How do energy and matter move in ecosystems?(1 point)
Responses
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 flow in one direction.
Energy and matter flow in one direction.
Matter flows in one direction, and energy cycles through the environment.
Matter flows in one direction, and energy cycles through the environment.
Energy and matter cycle through the environment.
Energy and matter cycle through the environment.
Energy flows in one direction, and matter cycles through the environment.
Which statement is true?(1 point)
Responses
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.
Food chains are the best depictions of feeding relationships because they show many ways that plants and animals are connected.