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Cell Work Unit Test
1 of 151 of 15 Items
Question
Which process in photosynthesis uses energy from the sun?(1 point)
Responses
absorbing carbon dioxide
absorbing carbon dioxide
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
Answers
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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
oxygen
hydrogen gas
hydrogen gas
carbon dioxide
carbon dioxide
glucose
glucose
Responses
oxygen
oxygen
hydrogen gas
hydrogen gas
carbon dioxide
carbon dioxide
glucose
glucose
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Which process do plants and animals share in common?
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The taiga biome has long, cold, dry winters and cool, wet summers. In three to four sentences, describe how the plants and animals would be impacted by a warm and dry summer and how they might survive. Support your answer with the abiotic factors in the biome
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You encounter a plant that has green structures on tall brown stalks. Which kind of plant is this, and what are the green structures? (1 point)
Responses
It is a nonvascular plant, and the structures are leaves.
It is a nonvascular plant, and the structures are leaves.
It is a vascular plant, and the structures are roots.
It is a vascular plant, and the structures are roots.
It is a nonvascular plant, and the structures are roots.
It is a nonvascular plant, and the structures are roots.
It is a vascular plant, and the structures are leaves.
Responses
It is a nonvascular plant, and the structures are leaves.
It is a nonvascular plant, and the structures are leaves.
It is a vascular plant, and the structures are roots.
It is a vascular plant, and the structures are roots.
It is a nonvascular plant, and the structures are roots.
It is a nonvascular plant, and the structures are roots.
It is a vascular plant, and the structures are leaves.
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what
The cells in vascular and nonvascular plants are both able to get water, but nonvascular plants have different methods than vascular plants. How do these differences affect the height of the plants? In three to five sentences, explain this and be sure to describe how each type of plant gets water to its cells.
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In one to two sentences, identify the purpose of the roots in a plant and how a disease that harms the roots of a flowering plant would affect the plant’s ability to survive.
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Use the image of the rose plant to complete the activity.
An illustration shows a rose flower with its stem.
Describe two adaptations you see on the rose plant, and explain how they are adaptations for defense, survival, or reproduction. Use three to five sentences to explain this.
An illustration shows a rose flower with its stem.
Describe two adaptations you see on the rose plant, and explain how they are adaptations for defense, survival, or reproduction. Use three to five sentences to explain this.
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what
Cell Work Unit Test
9 of 159 of 15 Items
Question
Which adaptation in a berry plant is for reproduction? (1 point)
Responses
thorns on the stem
thorns on the stem
flowers on the plant
flowers on the plant
sugar in the berries
sugar in the berries
chlorophyll in the leaves
chlorophyll in the leaves
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what
Cell Work Unit Test
10 of 1510 of 15 Items
Question
Some plants have sugar in their roots. How does this adaptation help with survival?(1 point)
Responses
Having the sugar under the ground keeps animals from finding and eating it.
Having the sugar under the ground keeps animals from finding and eating it.
The sugar is used to create new plants.
The sugar is used to create new plants.
The sugar attracts animals to eat the roots.
The sugar attracts animals to eat the roots.
The sugar can help the plant survive by storing energy.
The sugar can help the plant survive by storing energy.
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How do tropisms help plants survive?(1 point)
Responses
Plants grow toward things they need.
Plants grow toward things they need.
Plants grow together with other plants.
Plants grow together with other plants.
Plants limit their needs in harsh conditions.
Plants limit their needs in harsh conditions.
Plants create their own food using chlorophyll.
Responses
Plants grow toward things they need.
Plants grow toward things they need.
Plants grow together with other plants.
Plants grow together with other plants.
Plants limit their needs in harsh conditions.
Plants limit their needs in harsh conditions.
Plants create their own food using chlorophyll.
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what
A plant is observed to have deep roots and tendrils that wrap around objects. Which pair of tropisms correctly describe these responses?(1 point)
Responses
hydrotropism and thigmotropism
hydrotropism and thigmotropism
phototropism and thigmotropism
phototropism and thigmotropism
hydrotropism and geotropism
hydrotropism and geotropism
geotropism and phototropism
geotropism and phototropism
a
or
b
or
c
or
d
Responses
hydrotropism and thigmotropism
hydrotropism and thigmotropism
phototropism and thigmotropism
phototropism and thigmotropism
hydrotropism and geotropism
hydrotropism and geotropism
geotropism and phototropism
geotropism and phototropism
a
or
b
or
c
or
d
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what
Cell Work Unit Test
13 of 1513 of 15 Items
Question
Pole beans need something to grow around and up. Which kind of stimuli can encourage this type of growth?(1 point)
Responses
gravity
gravity
touch
touch
light
light
water
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ATP is
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Cell Work Unit Test
14 of 1514 of 15 Items
Question
ATP is(1 point)
Responses
a form of energy that can be used and stored
a form of energy that can be used and stored
released when carbon dioxide and water form glucose
released when carbon dioxide and water form glucose
stored during cellular respiration
stored during cellular respiration
a form of energy that cannot be stored
a form of energy that cannot be stored
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what
Cell Work Unit Test
15 of 1515 of 15 Items
Question
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 light
Excess light
Excess water
Excess water
Excess heat
Excess heat
Excess carbon dioxide
Excess carbon dioxide
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Loser Lover
One molecule of glucose is recycled into ___ molecules of carbon dioxide during cellular respiration.(1 point)
Responses
2
2
12
12
1
1
6
Responses
2
2
12
12
1
1
6
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Loser Lover
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 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.
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
Photosynthesis provides radiant energy to all the organisms in the entire food chain.
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 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.
Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
Photosynthesis provides radiant energy to all the organisms in the entire food chain.
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Loser Lover
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 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.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Living organisms decay and become fossils fuels, which eventually become rocks.
Living organisms decay and become fossils fuels, which eventually become rocks.
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 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.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Carbon dioxide released through respiration dissolves in certain rocks, like limestone.
Living organisms decay and become fossils fuels, which eventually become rocks.
Living organisms decay and become fossils fuels, which eventually become rocks.
Answered by
Loser Lover
The nitrogen cycle requires _____ to convert nitrogen to nitrites and nitrates.(1 point)
Responses
bacteria
bacteria
plants
plants
animals
animals
legumes
Responses
bacteria
bacteria
plants
plants
animals
animals
legumes
Answered by
Loser Lover
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.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, denitrification, and nitrification.
nitrogen fixation, denitrification, and nitrification.
denitrification, nitrification, and nitrogen fixation.
Responses
nitrification, nitrogen fixation, and denitrification.
nitrification, nitrogen fixation, and denitrification.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, nitrification, and denitrification.
nitrogen fixation, denitrification, and nitrification.
nitrogen fixation, denitrification, and nitrification.
denitrification, nitrification, and nitrogen fixation.
Answered by
Loser Lover
How do energy and matter move in ecosystems?(1 point)
Responses
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.
Energy flows in one direction, and matter cycles through the environment.
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.
Responses
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.
Energy flows in one direction, and matter cycles through the environment.
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.
Answered by
Loser Lover
Which statement is true?(1 point)
Responses
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 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 chains are the best depictions of feeding relationships because they show a simplified path for the flow of energy through an ecosystem.
Responses
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 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 chains are the best depictions of feeding relationships because they show a simplified path for the flow of energy through an ecosystem.
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Loser Lover
In one or two sentences, explain how the chemical equation for cellular respiration shows that plants cycle matter. Include the numbers of molecules and atoms involved to support your explanation.(2 points)
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Loser Lover
In a food pyramid, there is typically less biomass at the top (i.e., there are very few individual tertiary consumers, whereas there are numerous individual producers). In three to five sentences, explain this phenomenon, citing evidence relating to energy flow and how plants support ecosystems.
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Loser Lover
Ocean ecosystems are sensitive to the chemical composition of the water. Any excess compounds can upset the balance and cause damage to organisms. In three to five sentences, describe how reducing consumption of fossil fuels can help the ocean ecosystem. (4 points)
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splitting water into hydrogen and oxygen
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carbon dioxide
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Plants and animals share the process of cellular respiration.
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A warm and dry summer in the taiga biome would create several challenges for both plants and animals. The lack of moisture would hinder plant growth and could cause dehydration and death, while animals that rely on these plants for food could face a shortage of resources. Additionally, increased heat and dryness could lead to an increase in wildfires, further disrupting the ecosystem. To survive, species might adapt by reducing their activity levels or migrating to areas with more favorable conditions, and some plants might have adaptations to conserve water or store nutrients.
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It is a vascular plant, and the structures are leaves.
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The main difference in how vascular and nonvascular plants obtain water is that vascular plants have specialized tissues for water transport, while nonvascular plants do not. Vascular plants have xylem, which carries water and minerals from the roots up to the rest of the plant, and phloem, which carries sugars and other organic nutrients. Nonvascular plants, such as mosses, rely on capillary action and osmosis to transport water and nutrients through their tissues. Because of this difference, vascular plants can grow taller than nonvascular plants, since they have a more efficient system for moving water and nutrients to their upper regions. This allows them to develop larger and more complex structures, such as leaves and flowers, which are necessary for photosynthesis and reproduction.
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The main purpose of the roots in a plant is to absorb water and nutrients from the soil. A disease that harms the roots of a flowering plant would affect the plant’s ability to survive because it would disrupt its ability to obtain essential resources, making it more vulnerable to other stresses and possibly leading to death.
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One adaptation on the rose plant is the presence of thorns along the stem, which are modified leaves. These thorns serve a defensive function, protecting the plant from herbivores that might try to eat its leaves or flowers. Another adaptation is the bright, showy flowers, which attract pollinators such as bees and butterflies for reproduction. The flowers contain both male and female reproductive organs, allowing for self-pollination, but pollinators increase the likelihood of successful pollination and fertilization. Additionally, the fragrances and colors of the flowers may also help attract specific pollinators. Overall, these adaptations help the rose plant to survive and reproduce in its environment.
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flowers on the plant
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The sugar can help the plant survive by storing energy.
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Plants grow toward things they need.
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hydrotropism and thigmotropism
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touch
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ATP stands for Adenosine triphosphate, which is a molecule that stores and releases energy that is needed for various cellular processes. It is often referred to as the "energy currency" of the cell because it provides the energy that powers many important biological activities, such as muscle contractions, nerve impulses, and chemical reactions.
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a form of energy that can be used and stored.
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Excess heat
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6
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Photosynthesis converts radiant energy to chemical energy to be used by organisms in the food chain.
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Carbon dioxide dissolves in ocean water and is slowly absorbed by rocks in the ocean.
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bacteria
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nitrogen fixation, nitrification, and denitrification.
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Energy flows in one direction, and matter cycles through the environment.
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Food webs are the best depictions of feeding relationships because they show many ways that plants and animals are connected.
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The chemical equation for cellular respiration shows that plants cycle matter by taking in six molecules of oxygen (O2) and releasing six molecules of carbon dioxide (CO2) back into the atmosphere. At the same time, they break down glucose into six molecules of carbon dioxide and six molecules of water. This means that carbon, oxygen, and hydrogen atoms are constantly being cycled through the environment, with plants acting as key players in the process of converting carbon dioxide into organic matter that can be used by other organisms.
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The phenomenon of there being less biomass at the top of a food pyramid is due to the fact that the transfer of energy between trophic levels is not very efficient. As energy is transferred from one level to the next, some of it is always lost as heat, and some is used up by organisms for their own metabolic processes. Since plants at the bottom of the pyramid are the primary producers, they have access to the largest source of energy (sunlight) and can produce their own food through photosynthesis, making them capable of supporting a large number of individuals and species at higher trophic levels. However, as we move up the pyramid and energy is transferred to other organisms, less and less is available to support each additional level. This makes it less and less likely for there to be many individual tertiary consumers, which are typically at the top of most food webs.
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Reducing consumption of fossil fuels can help the ocean ecosystem in several ways. Burning fossil fuels releases carbon dioxide, which is absorbed by the ocean, increasing its acidity and causing harm to calcifying organisms like corals and shellfish. By reducing the use of fossil fuels, we can limit the amount of carbon dioxide released into the atmosphere and, ultimately, absorbed by the ocean. Additionally, many fossil fuels are transported across the ocean, creating the risk of spills and other accidents that can cause severe damage to marine ecosystems. By reducing our reliance on these fuels, we can limit this risk and help protect the ocean and its inhabitants.
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