Energy Flow

Organisms that use energy from the sun to make their own food are called

• carnivores
• consumers
• omnivores
• producers

What will MOST LIKELY happen if a new producer is introduced into a food web?

• The omnivores will decrease.
• The herbivores will increase.
• The carnivores will decrease.
• The decomposers will decrease.

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In food chains, the flow of energy is ALWAYS

•  one-way
• reversible
• two-way
• cyclic

The following organisms make up a food chain: algae-> fish -> bear. If you were to place the bear into this pyramid, the bear would go on level ____ and have ____amount of energy available to it

• A; the least
• C; the least
• A; the greatest
• B; an intermediate amount

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What part of the cell makes enzymes?

• ribosomes
• mitochondria
• chloroplast
• lysosomes

Energy from food must be transformed into the bonds of ______before it can be used by cells.

• ATP
• FADH2
• NADP
• sugar

Which process can produce the most energy for a cell?

• Lactic Acid fermentation
• Aerobic respiration
• Anaerobic respiration
• Alcohol fermentation

In the food web, the insectivorous birds would be classified as

• carnivores
• decomposers
• herbivores
• omnivores

What would be the direct impact of an increase in the amount of toads in the ecosystem?

• an in crease in the population of squirrels
• a decrease in the population of owls
• an increase in the population of snakes
• a decrease in the rabbit population

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The figure shows a trophic pyramid for an ecosystem. What happens to the amount of energy in the pyramid as it moves up through the different levels?

• Energy increases by 10% each level
• Energy decreases by 90% each level
• Energy decreases by 10%
• Energy increases by 90%