Cell Energy Review

The energy molecules that all living things make in their cells are __________.

• Light

• Fatty acids

• ATP

• Nucleic acids

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Which of these is an example of an autotroph?

• Human

• Sunlight

• Tree

• Carbon

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When muscle cells run out of oxygen, they use anaerobic respiration. This process produces __________ ATP than aerobic respiration.

• the same amount of

• different kinds of

• more

• less

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Animals rely on plants for __________.

• carbon dioxide

• water

• sunlight

• oxygen

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All living things __________.

• make their own food

• need energy

• have chloroplasts in their cells

• have a skeleton

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The molecules in the food we eat contain chemical energy stored in chemical bonds. Which statement BEST explains how this energy is released?

• Cells burn food molecules, releasing energy as heat that powers muscles while keeping the body at the correct temperature.

• Chemical energy is released as eaten food is digested, giving off heat as a by-product.

• Cells extract and capture the energy in food molecules all at once, then store it for later use.

• Chemical bonds in food molecules are broken, releasing energy that is then stored in ATP.

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The diagram shows the structure of adenosine diphosphate (ADP). What describes the conversion of ADP to ATP?

• an input of energy as both phosphate groups detach

• a release of energy as one phosphate group detaches

• a release of energy as a third phosphate group is attached

• an input of energy to attach a third phosphate group

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Nancy is explaining why chlorophyll is classified as a plant pigment and how it is useful in photosynthesis. Which property of chlorophyll would be most appropriate for her to cite?

• chlorophyll’s ability to absorb light

• chlorophyll’s green color

• chlorophyll’s presence in chloroplasts

• chlorophyll’s reactivity with oxygen

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Second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy extracting reactions.

• Lactic Acid Fermentation

• Electron Transport Chain

• Glycolysis

• Kreb’s Cycle

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Happens in the part of the cell called the chloroplast.

• Cellular Respiration

• Photosynthesis

• Fermentation

• Glycolysis

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