Angela would like to observe living algae from pond water. Which type of microscope should she use?

• A. Scanning electron microscope
• B. Transmission electron microscope
• C. Atomic force microscope
• D. Light microscope

Answer: (D)

Verified step by step guidance

1. Understand the goal: Angela wants to observe living algae, which means the microscope must allow viewing of live specimens without killing or damaging them.
2. Recall the types of microscopes: Electron microscopes (scanning and transmission) use electron beams and require specimens to be fixed, dehydrated, and often coated, which kills living cells.
3. Consider the atomic force microscope: It provides surface topography at very high resolution but is not typically used for observing living microorganisms in their natural state.
4. Identify the light microscope: It uses visible light to illuminate specimens and can be used to observe living cells in real time, making it suitable for viewing living algae.
5. Conclude that the light microscope is the appropriate choice for Angela to observe living algae because it allows visualization of live specimens without extensive preparation that would kill them.