Photosynthesis and Cellular Respiration
Photosynthesis and cellular respiration are two of the most important biological processes that sustain life on Earth. Photosynthesis allows plants, algae, and certain bacteria to capture energy from sunlight and convert it into glucose, while cellular respiration enables cells to break down glucose and release energy in the form of ATP. Together, these processes form the basis of energy flow through living organisms and ecosystems. This flashcard deck covers the essential concepts of photosynthesis and cellular respiration, including chloroplasts, chlorophyll, light-dependent reactions, the Calvin cycle, glucose production, mitochondria, glycolysis, the citric acid cycle, the electron transport chain, ATP production, and the role of oxygen in energy metabolism. It also explains how these two processes are interconnected through the cycling of carbon dioxide, oxygen, water, and glucose. Designed for biology students and lifelong learners, these flashcards simplify complex topics into clear, easy-to-review questions and answers. Whether you're preparing for quizzes, exams, or simply strengthening your understanding of cellular energy, this deck provides an effective way to review key terms, reinforce important concepts, and improve long-term retention.
All Cards in This Deck
Question
What is photosynthesis?
Answer
Photosynthesis is the process by which plants, algae, and some bacteria use sunlight to convert carbon dioxide and water into glucose and oxygen.
Question
In which organelle does photosynthesis occur?
Answer
Photosynthesis occurs in the chloroplasts of plant and algal cells.
Question
What pigment captures light energy during photosynthesis?
Answer
Chlorophyll is the primary pigment that captures light energy.
Question
What are the two main stages of photosynthesis?
Answer
The light-dependent reactions and the Calvin cycle (light-independent reactions).
Question
What is the primary function of the light-dependent reactions?
Answer
They capture light energy to produce ATP and NADPH while releasing oxygen from water.
Question
What is the Calvin cycle?
Answer
The Calvin cycle uses ATP and NADPH to convert carbon dioxide into sugars.
Question
What are the main reactants of photosynthesis?
Answer
Carbon dioxide, water, and light energy.
Question
What are the main products of photosynthesis?
Answer
Glucose and oxygen.
Question
What is cellular respiration?
Answer
Cellular respiration is the process by which cells break down glucose to produce ATP.
Question
In which organelle does most cellular respiration occur?
Answer
Most cellular respiration occurs in the mitochondria.
Question
What is ATP?
Answer
ATP (adenosine triphosphate) is the primary energy-carrying molecule in cells.
Question
What is glycolysis?
Answer
Glycolysis is the first stage of cellular respiration, where glucose is broken down into pyruvate in the cytoplasm.
Question
Where does glycolysis take place?
Answer
Glycolysis occurs in the cytoplasm of the cell.
Question
What is the citric acid cycle?
Answer
The citric acid cycle is a series of reactions that further breaks down molecules to generate energy carriers for ATP production.
Question
What is the electron transport chain?
Answer
It is the final stage of cellular respiration where electrons are transferred to produce most of the cell's ATP.
Question
What role does oxygen play in cellular respiration?
Answer
Oxygen acts as the final electron acceptor in the electron transport chain.
Question
What are the main products of cellular respiration?
Answer
ATP, carbon dioxide, and water.
Question
How are photosynthesis and cellular respiration related?
Answer
Photosynthesis produces glucose and oxygen used in cellular respiration, while cellular respiration produces carbon dioxide and water used in photosynthesis.
Question
Why is ATP important to cells?
Answer
ATP provides energy for cellular processes such as growth, transport, and metabolism.
Question
Which organisms perform photosynthesis?
Answer
Plants, algae, and certain bacteria perform photosynthesis.