Energy and Matter: The Essentials of Life in Biology

The video explores the relationship between energy and life, emphasizing how living organisms obtain, store, and use energy and matter. It explains the roles of producers, consumers, and decomposers in the energy cycle, highlighting processes like photosynthesis and respiration. The video also discusses the concepts of autotrophs and heterotrophs, metabolism, and energy inefficiency, concluding with a reminder of the sun's essential role in sustaining life.

What is the term used in biology to refer to the physical stuff that living things are made of?

• Energy

• Matter

• Structure

• Molecules

Which organisms are capable of converting light energy into chemical energy?

• Consumers

• Decomposers

• Producers

• Heterotrophs

What is the primary process by which plants convert sunlight into chemical energy?

• Respiration

• Metabolism

• Photosynthesis

• Decomposition

What is the process called when plants break down glucose to release stored energy?

• Digestion

• Fermentation

• Respiration

• Photosynthesis

How do animals obtain energy from the food they consume?

• By decomposition

• By fermentation

• By respiration

• By photosynthesis

What role do decomposers play in the ecosystem?

• They break down dead organisms

• They store energy in glucose

• They consume living plants

• They produce energy from sunlight

What is the term for organisms that cannot produce their own food?

• Decomposers

• Heterotrophs

• Producers

• Autotrophs

What is metabolism in the context of living organisms?

• The process of photosynthesis

• The breakdown and building of molecules

• The storage of energy in glucose

• The decomposition of dead matter

Why is energy transfer in biological processes considered inefficient?

• Energy is perfectly transferred

• Energy is lost as heat

• Energy is stored indefinitely

• Energy is converted to matter

What is the ultimate source of energy for life on Earth?

• Heat energy

• The sun

• Glucose

• Chemical bonds