In the study of organ systems, where is a specimen typically placed for examination under a microscope?

• A. In a test tube
• B. In a Petri dish
• C. On a weighing scale
• D. On a glass slide

Answer: (D)

Verified step by step guidance

1. Understand the context: When examining specimens under a microscope, the goal is to observe them at a cellular or tissue level, which requires a specific setup.
2. Identify the tools used in microscopy: A microscope is used to magnify small specimens, and a glass slide is a common tool used to hold the specimen in place for viewing.
3. Consider the function of a glass slide: A glass slide is a thin, flat piece of glass used to hold objects for examination under a microscope. It allows light to pass through the specimen, which is essential for clear viewing.
4. Eliminate incorrect options: A test tube is used for holding liquids or conducting reactions, not for microscopic examination. A Petri dish is used for culturing cells or small organisms, and a weighing scale is used for measuring mass, neither of which are suitable for direct microscopic examination.
5. Conclude with the correct setup: The specimen is placed on a glass slide, often covered with a cover slip, to be examined under a microscope, ensuring it is flat and thin enough for light to pass through and provide a clear image.