Week 4 Energy for Life

What is the definition of energy?

• The process of making food

• The ability to do work

• A type of sugar

• The opposite of heat

Which of the following organisms is an autotroph?

• Dog

• Mushroom

• Sunflower

• Human

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Another name for autotroph is:

• Consumer

• Producer

• Predator

• Decomposer

Heterotrophs are organisms that:

• Produce their own food

• Use sunlight to make energy

• Consume other organisms for food

• Release oxygen into the air

What is the chemical formula for glucose?

• H₂O

• CO₂

• C₆H₁₂O₆

• O₂

Which molecule acts as the quick “energy currency” of the cell?

• Glucose

• Oxygen

• ATP

• Carbon dioxide

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What happens when ATP loses a phosphate group?

• It gains more energy

• It becomes glucose

• It becomes ADP and releases energy

• It turns into oxygen

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Which process uses sunlight to make glucose and oxygen?

• Cellular respiration

• Photosynthesis

• Fermentation

• Digestion

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Which process breaks down glucose to make ATP?

• Photosynthesis

• Decomposition

• Cellular respiration

• Evaporation

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Why do organisms need both glucose and ATP?

• Glucose stores energy, ATP powers cell processes

• ATP stores energy, glucose powers cell processes

• Both are waste products

• Both are only found in autotrophs

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