Question

a student wants to investigate various organisms to see whether they are made of one cell or many different types of cells. the student identifies the tools to be used for the investigation. prepared slide of amoeba, prepared slide of a plant leaf, prepared slide of animal skin, microscope

Explanation:

To determine the best tool for investigating if organisms are unicellular or multicellular, we analyze each option:

• Prepared slide of amoeba: Amoeba is a unicellular organism. Observing it shows a single - celled structure, but it only represents unicellular organisms.
• Prepared slide of a plant leaf: A plant leaf is part of a multicellular plant, but it shows a tissue (a group of similar cells) rather than clearly distinguishing between single - celled and multicellular at the organism level.
• Prepared slide of animal skin: Animal skin is a tissue of a multicellular animal, not helpful for seeing single - celled organisms.
• Microscope: A microscope is essential to observe the cellular structure of organisms. With a microscope, we can view the amoeba (to see it is single - celled) and also view the cells of the plant leaf and animal skin (to see they are part of multicellular structures with many cells). It is the tool that allows us to examine the cellular composition of all these organisms to determine if they are made of one cell or many different types of cells.

Answer:

microscope