What is the primary function of chloroplasts in plant and algal cells?

• A. Modify, sort, and package proteins and lipids for secretion or delivery to other organelles
• B. Generate ATP primarily through oxidative phosphorylation during cellular respiration
• C. Store genetic information as the cell’s main repository of DNA and control gene expression
• D. Carry out photosynthesis by converting light energy into chemical energy stored in sugars

Answer: (D)

Verified step by step guidance

1. Identify the organelle in question: chloroplasts, which are found in plant and algal cells.
2. Recall the main functions of chloroplasts, focusing on their role in energy conversion processes.
3. Understand that chloroplasts contain the pigment chlorophyll, which captures light energy.
4. Recognize that chloroplasts use this light energy to convert carbon dioxide and water into glucose and oxygen, a process known as photosynthesis.
5. Conclude that the primary function of chloroplasts is to carry out photosynthesis by converting light energy into chemical energy stored in sugars.