Finding The Energy Test-one Question Per Page
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Questions and Answers
- 1.
What is food?
- A.
Energy lacking substances
- B.
Energy rich
- C.
Energy rich carbohydrates
- D.
Energy rich calories
Correct Answer
C. Energy rich carbohydratesExplanation
Food is a source of energy for our bodies, and carbohydrates are one of the main sources of energy in our diet. Carbohydrates are broken down into glucose, which is used by our cells to produce energy. Therefore, the answer "energy rich carbohydrates" is the most accurate description of what food is.Rate this question:
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- 2.
Energy in food is measured in what?
- A.
Kilograms
- B.
Carbohydrates
- C.
Calories
- D.
Caloric intake
Correct Answer
C. CaloriesExplanation
Energy in food is measured in calories. Calories are a unit of measurement for energy. When we consume food, our bodies break down the carbohydrates, fats, and proteins into smaller molecules, and this process releases energy. The amount of energy released is measured in calories. Therefore, calories are the appropriate unit for measuring the energy content of food.Rate this question:
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- 3.
Plants require which materials to perform photosynthesis?
- A.
H20, CO2, O2, sunlight
- B.
CO2, H2O, sunlight
- C.
CO2, H20, N2, sunlight
- D.
H2O, CO2, O2, N, sunlight
Correct Answer
B. CO2, H2O, sunlightExplanation
Plants require CO2, H2O, and sunlight to perform photosynthesis. CO2 is needed as a source of carbon, which is essential for building organic molecules. H2O is necessary for providing hydrogen atoms, which are used to produce glucose and other carbohydrates. Sunlight is required as an energy source for the chemical reactions involved in photosynthesis.Rate this question:
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- 4.
Producers perform photosynthesis to produce energy primarily for other organisms to use.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Producers perform photosynthesis to produce energy primarily for themselves to use, not for other organisms. Photosynthesis is the process by which plants and some other organisms convert sunlight into chemical energy in the form of glucose. This energy is used by the producers for their own growth, development, and other metabolic processes. However, it is true that other organisms, such as herbivores, consume producers to obtain energy for their own survival.Rate this question:
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- 5.
Trophic levels are determined by the feeding relationships of organisms.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Trophic levels refer to the position of an organism in a food chain or food web. They are determined by the feeding relationships between organisms, specifically the transfer of energy and nutrients from one organism to another. Organisms that obtain energy directly from producers occupy the first trophic level, while those that consume herbivores or other carnivores occupy higher trophic levels. Therefore, it is true that trophic levels are determined by the feeding relationships of organisms.Rate this question:
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- 6.
What are the levels of a food web?
- A.
Feeding relationships
- B.
Trophic levels
- C.
Tropical levels
- D.
Energy levels
Correct Answer
B. Trophic levelsExplanation
Trophic levels refer to the different levels in a food web where organisms obtain their energy. Each trophic level represents a different position in the food chain, starting from producers (plants) at the bottom, followed by primary consumers (herbivores), secondary consumers (carnivores), and so on. As energy is transferred from one level to another, the amount of available energy decreases, resulting in fewer organisms at higher trophic levels. Therefore, trophic levels are a crucial concept in understanding the flow of energy and the interdependence of organisms in an ecosystem.Rate this question:
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- 7.
After burning the snacks, which one did we determine had the most energy?
- A.
Chex mix
- B.
Rice crispy treat
- C.
Sun chip
- D.
Cheezit
Correct Answer
C. Sun chipExplanation
The correct answer is sun chip. This can be determined based on the fact that the question mentions burning the snacks, which implies measuring the energy released during combustion. Since sun chips are made from whole grains and contain healthy fats, they are likely to have a higher energy content compared to the other snacks listed.Rate this question:
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- 8.
What is biomass?
- A.
The total mass of all the photosynthetic organism in an ecosystem
- B.
The total mass of the consumers in an ecosystem
- C.
The total mass of all biotic factors
- D.
The total mass of abiotic factors in an ecosystem
Correct Answer
A. The total mass of all the photosynthetic organism in an ecosystemExplanation
Biomass refers to the total mass of all the photosynthetic organisms in an ecosystem. This includes plants, algae, and other organisms that can convert sunlight into energy through the process of photosynthesis. Biomass is an important measure of the productivity and energy flow within an ecosystem, as it represents the amount of organic material available to support other organisms in the food chain.Rate this question:
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- 9.
How much energy transfers from one trophic level to the next?
- A.
1 calorie
- B.
100%
- C.
1 Calorie
- D.
10%
Correct Answer
D. 10%Explanation
Energy transfer from one trophic level to the next is not 100% efficient due to factors such as metabolic processes, heat loss, and incomplete digestion. Only about 10% of the energy is transferred from one trophic level to the next, with the remaining 90% being lost as heat or used for the organism's own metabolic needs. This is known as the 10% rule in ecology, which explains why food chains are typically limited in length and why there are fewer individuals at higher trophic levels.Rate this question:
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- 10.
A 20 lb. biomass coyote would need to eat how many pounds of biomass of birds?
- A.
20 pounds
- B.
20,000 pounds
- C.
200 pounds
- D.
2 pounds
Correct Answer
C. 200 poundsExplanation
A 20 lb. biomass coyote would need to eat 200 pounds of biomass of birds because the question is asking for the amount of biomass of birds that the coyote would need to consume. Since the coyote weighs 20 pounds, it would require a larger amount of biomass to sustain itself, which is represented by the 200 pounds option.Rate this question:
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- 11.
Organisms get the energy they need by eating other organisms, or making their own food.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Organisms obtain the energy they require either by consuming other organisms or by producing their own food. This process is known as energy transfer or energy flow in an ecosystem. Some organisms, such as plants, are capable of producing their own food through photosynthesis, while others, such as animals, obtain energy by consuming other organisms. Therefore, the statement "Organisms get the energy they need by eating other organisms, or making their own food" is true.Rate this question:
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- 12.
When organisms eat producers, they get energy from the carbohydrates that the plant produced.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
When organisms eat producers, such as plants, they obtain energy from the carbohydrates that the plants have produced through photosynthesis. Carbohydrates, like glucose, are a source of energy for living organisms. Therefore, it is true that organisms derive energy from the carbohydrates produced by plants when they consume them.Rate this question:
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- 13.
When a plant makes a carbohydrate such as glucose, where is the energy stored?
- A.
In the carbon atoms
- B.
In the oxygen atoms
- C.
In the hydrogen atoms
- D.
In the bonds that hold the atoms together
Correct Answer
D. In the bonds that hold the atoms togetherExplanation
When a plant makes a carbohydrate such as glucose, the energy is stored in the bonds that hold the atoms together. This is because when plants undergo photosynthesis, they convert sunlight energy into chemical energy stored in the bonds of glucose molecules. This energy can later be released when the bonds are broken during cellular respiration, allowing the plant to utilize the stored energy for various metabolic processes.Rate this question:
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- 14.
6 CO2 + 6 H2O + sunlight --> C6H12O6 + O2
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The given equation represents the process of photosynthesis, where carbon dioxide (CO2) and water (H2O) are converted into glucose (C6H12O6) and oxygen (O2) in the presence of sunlight. This equation is a simplified representation of the overall process that occurs in plants and some other organisms. Therefore, the statement "True" is correct as it accurately describes the process of photosynthesis.Rate this question:
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- 15.
Organims that make their own food are
- A.
Producers
- B.
Consumers
- C.
Decomposers
- D.
Photosynthesis
Correct Answer
A. ProducersExplanation
Producers are organisms that have the ability to produce their own food through photosynthesis or chemosynthesis. They convert sunlight, water, and carbon dioxide into glucose and oxygen, using energy from the sun. This process is essential for the survival of the ecosystem as it provides food for other organisms. Consumers, on the other hand, obtain their energy by consuming other organisms. Decomposers break down dead organic matter and recycle nutrients back into the ecosystem. Therefore, the correct answer is producers.Rate this question:
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- 16.
The total amount of energy captured in an ecosystem by all the producers.
- A.
Net production
- B.
Biomass
- C.
Gross production
- D.
Trophic levels
Correct Answer
C. Gross productionExplanation
Gross production refers to the total amount of energy captured by all the producers in an ecosystem. It represents the total energy available for consumption by the organisms in higher trophic levels. It includes the energy used by producers for their own growth and maintenance, as well as the energy stored in their biomass. Gross production is an important measure of the productivity and energy flow within an ecosystem.Rate this question:
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- 17.
The amount of energy available for use at the next trophic level.
- A.
Net production
- B.
Biomass
- C.
Gross production
- D.
Trophic levels
Correct Answer
A. Net productionExplanation
Net production refers to the amount of energy that is available for use at the next trophic level. It is the energy that remains after the organisms have used some of the energy for their own metabolism and growth. Net production represents the energy that is transferred to the next level of the food chain and is available for consumption by the organisms at that level. In contrast, gross production refers to the total amount of energy that is produced by the organisms through photosynthesis or other means, while biomass refers to the total mass of living organisms in a given area or ecosystem.Rate this question:
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- 18.
The second trophic level is made up of what?
- A.
Producers
- B.
Primary consumers
- C.
Secondary consumers
- D.
Decomposers
Correct Answer
B. Primary consumersExplanation
The second trophic level is made up of primary consumers. Primary consumers are organisms that directly feed on producers, such as plants. They are herbivores that obtain their energy by consuming plants or plant parts. This level represents the first level of consumers in a food chain or food web, as they are the first organisms to consume the energy-rich producers.Rate this question:
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- 19.
Energy is released in the form of what?
- A.
Carbohydrates
- B.
Heat
- C.
Photosynthesis
- D.
Glucose
Correct Answer
B. HeatExplanation
When energy is released, it is commonly in the form of heat. This is because energy can be converted from one form to another, and heat is a common byproduct of these conversions. In the context of the given options, carbohydrates and glucose are sources of energy, but they are not forms in which energy is released. Photosynthesis is a process that converts light energy into chemical energy, but it does not directly release energy. Therefore, the correct answer is heat.Rate this question:
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- 20.
If a group of California Gulls consumes 45 pounds biomass of brine shrimp, how much biomass of energy is passed to the Gulls?
- A.
450 pounds
- B.
45 pounds
- C.
4.5 pounds
- D.
.45 pounds
Correct Answer
C. 4.5 poundsExplanation
The correct answer is 4.5 pounds. Biomass represents the total weight of living organisms in a given area, and energy is passed from one trophic level to another in an ecosystem. In this case, if the California Gulls consume 45 pounds of brine shrimp biomass, only a fraction of that biomass is converted into energy that can be used by the gulls. Therefore, the amount of biomass of energy passed to the gulls is 4.5 pounds.Rate this question:
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