Photosynthesis Quick Check
1 chloroplasts
2 green
3 Two electrons and A hydrogen ion
4 a lack of carbon dioxide
5 Calvin cycle
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To answer each question in the Photosynthesis Quick Check, we can break down the information and explain how to arrive at the answer.
1. Question: What organelle is responsible for photosynthesis?
Answer: Chloroplasts.
Explanation: In order to identify the organelle responsible for photosynthesis, a basic understanding of plant cell structure is required. Start by recalling the functions of different organelles. The chloroplast is the organelle where photosynthesis occurs, as it contains chlorophyll, the pigment that captures sunlight energy.
2. Question: What color do chloroplasts appear?
Answer: Green.
Explanation: Observe the color of chloroplasts to remember and understand that they appear green. Remember that chlorophyll, the pigment within the chloroplasts, reflects green light, making the chloroplasts and plants appear green.
3. Question: What is the product of photosystem II?
Answer: Two electrons and a hydrogen ion.
Explanation: Photosystem II (PSII) is the first step in light-dependent reactions, which are a part of photosynthesis. During PSII, light energy excites electrons in chlorophyll, creating two high-energy electrons and a hydrogen ion (H+) from a water molecule. Understanding the process of PSII allows us to recognize the product.
4. Question: What does photosynthesis require an adequate supply of?
Answer: Carbon dioxide.
Explanation: Recall that photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into glucose and oxygen. Without an adequate supply of carbon dioxide, the rate of photosynthesis will decrease. Therefore, a lack of carbon dioxide hinders photosynthesis.
5. Question: What cycle occurs in the stroma of the chloroplast and produces glucose?
Answer: Calvin cycle.
Explanation: The Calvin cycle, also known as the dark reaction, occurs in the stroma of the chloroplast, which is the space outside the thylakoid membrane. This cycle uses carbon dioxide, ATP (adenosine triphosphate), and NADPH (nicotinamide adenine dinucleotide phosphate) produced during the light-dependent reactions to produce glucose. Understanding the different stages of photosynthesis will lead to identifying the Calvin cycle.