Chapter 3: Bioenergetics Exam:

What is the primary role of ATP in cellular processes?

• Long-term energy storage
• Energy currency for immediate use in cells
• Breaking down glucose molecules
• Producing electrons

During photosynthesis, where do the light-dependent reactions occur?

• Cell membrane
• Mitochondria
• Stroma
• Thylakoid membrane

Which of the following best describes an autotroph?

• An organism that consumes other organisms for energy
• An organism that produces its own food through photosynthesis
• A consumer that eats both plants and animals
• An organism that breaks down dead matter

What percentage of energy is typically transferred from one trophic level to the next in an energy pyramid?

• 1%
• 50%
• 10%
• 90%

Which equation correctly represents photosynthesis?

• C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O
• 6CO₂ + 6H₂O + Light → C₆H₁₂O₆ + 6O₂
• 6O₂ + C₆H₁₂O₆ → 6CO₂ + 6H₂O
• C₆H₁₂O₆ + 6CO₂ → O₂ + H₂O

How does ATP become ADP?

• By adding a phosphate group
• By absorbing energy
• By removing a phosphate group
• By adding glucose

What is the ultimate source of energy for most ecosystems?

• Glucose
• Water
• The Sun
• ADP

Which organisms play a crucial role in returning nutrients to the ecosystem?

• Producers
• Decomposers
• Herbivores
• Omnivores

Where does the Calvin Cycle take place in the chloroplast?

• Stroma
• Thylakoid membrane
• Inner membrane
• Outer membrane

What type of consumer would a deer be classified as?

• Carnivore
• Herbivore
• Decomposer
• Predator