Which of the following best describes the primary function of the cytoplasm in a eukaryotic cell?

• A. It synthesizes proteins for export out of the cell.
• B. It generates ATP through cellular respiration.
• C. It provides a medium for chemical reactions and suspends organelles within the cell.
• D. It stores genetic information and controls cellular activities.

Answer: (C)

Verified step by step guidance

1. Step 1: Understand the role of the cytoplasm in a eukaryotic cell. The cytoplasm is the gel-like substance that fills the interior of the cell, excluding the nucleus. It is composed primarily of water, salts, and organic molecules.
2. Step 2: Recognize that the cytoplasm serves as a medium for chemical reactions. Many metabolic processes occur within the cytoplasm, facilitated by enzymes and other molecules suspended in this medium.
3. Step 3: Note that the cytoplasm also suspends organelles. Organelles such as the mitochondria, endoplasmic reticulum, and Golgi apparatus are embedded within the cytoplasm, allowing them to interact and function efficiently.
4. Step 4: Eliminate incorrect options based on the cytoplasm's function. For example, protein synthesis for export is primarily performed by ribosomes and the rough endoplasmic reticulum, not the cytoplasm. ATP generation occurs in the mitochondria, and genetic information storage is the role of the nucleus.
5. Step 5: Conclude that the correct description of the cytoplasm's primary function is: 'It provides a medium for chemical reactions and suspends organelles within the cell.' This aligns with its role in maintaining cellular structure and facilitating biochemical processes.