Answer:
A compound light microscope is a versatile tool for magnifying small objects, typically up to about 1000 times their actual size. Given the choices, here’s an evaluation of each option regarding the appropriateness of using a compound light microscope:
A. **Detect presence or absence of a nucleus large organelle and cells of unknown origin.**
- Yes, a compound light microscope can be used for this purpose. It is capable of resolving cellular structures such as nuclei and large organelles within cells.
B. **Determine the diversity of microbes and lagoon to monitor recovery after pollution.**
- Yes, a compound light microscope is suitable for observing many types of microbes, such as bacteria and some protists, which are relevant to monitoring ecological recovery.
C. **Decipher whether snakes detect their prey through sound, smell, light, touch or a combination of senses.**
- No, this investigation would not typically require a compound light microscope, as it involves behavioral and sensory studies rather than microscopic observation.
D. **Identify red blood cells in a patient suspected to have sickle cell anemia, in which red blood cells are sickle-shaped.**
- Yes, a compound light microscope can be used to observe the shape of red blood cells and identify sickle cells in a blood sample.
E. **Examine the corona, or protein spikes, on the outside of COVID-19 (SARS-CoV-2) virus.**
- No, the details of viral structures such as protein spikes are too small to be resolved by a compound light microscope. An electron microscope would be required for this purpose.
Thus, the correct options are:
A. **Detect presence or absence of a nucleus large organelle and cells of unknown origin.**
B. **Determine the diversity of microbes and lagoon to monitor recovery after pollution.**
D. **Identify red blood cells in a patient suspected to have sickle cell anemia, in which red blood cells are sickle-shaped.**
