OCR GCSE Biology Practice Exam 2025 – Comprehensive All-in-One Guide to Exam Success

Question: 1 / 1090

What substances are primarily contained within chloroplasts?

Proteins and lysosomes

Chlorophyll and enzymes

Chloroplasts are specialized organelles found in plant cells and some protists, crucial for the process of photosynthesis. They primarily contain chlorophyll, a pigment that captures light energy, allowing the conversion of carbon dioxide and water into glucose and oxygen using sunlight. This process is vital for producing energy for the plant and is the foundation of the food chain.

In addition to chlorophyll, chloroplasts have various enzymes that facilitate the biochemical reactions involved in photosynthesis, such as the conversion of carbon compounds. These enzymes help catalyze reactions that are essential for the synthesis of glucose and other carbohydrates.

The presence of chlorophyll and enzymes within the chloroplasts enables plants to harness solar energy effectively, making this the correct answer regarding the primary substances found within these organelles.

Get further explanation with Examzify DeepDiveBeta

DNA and ribosomes

Fatty acids and lipids

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy