Exploring Bioenergetics for the Biology Keystone Exam

This video tutorial covers cellular energy, focusing on ATP, photosynthesis, and cellular respiration. It explains the roles of autotrophs and heterotrophs, the structure and function of ATP, and the processes of photosynthesis and cellular respiration, including glycolysis, the Krebs cycle, and the electron transport chain. The tutorial highlights the conversion of light energy to chemical energy and the importance of these processes in energy production.

What are autotrophs capable of?

• Consuming other organisms for energy

• Creating their own source of chemical energy

• Breathing underwater

• Performing only heterotrophic functions

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Which type of organism can perform photosynthesis?

• Heterotrophs

• Autotrophs

• Decomposers

• Carnivores

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What does ATP stand for?

• Adenosine diphosphate

• Adenosine tetraphosphate

• Adenosine triphosphate

• Adenine triphosphate

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What is the main role of ATP in cells?

• To provide structural support

• To facilitate passive transport

• To store genetic information

• To serve as a primary energy carrier

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What is the main purpose of light-dependent reactions in photosynthesis?

• To produce glucose directly

• To create ATP without light

• To split water molecules and produce oxygen

• To consume carbon dioxide

What process converts light energy into chemical energy?

• Cellular respiration

• Photosynthesis

• Fermentation

• Glycolysis

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What does glycolysis produce?

• Glucose

• Oxygen

• ATP

• Carbon dioxide

What is the final electron acceptor in the electron transport chain?

• Carbon dioxide

• Oxygen

• Water

• Glucose

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During which process is glucose broken down in the absence of oxygen?

• Fermentation

• Krebs cycle

• Photosynthesis

• Electron transport chain

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What is the main product of the Krebs cycle?

• Glucose

• Oxygen

• Carbon dioxide

• ATP