Microorganisms are useful in the study of higher life forms for which of the following reasons?

• A. They have simple structures and rapid reproduction, allowing easier observation of biological processes.
• B. They do not require nutrients to survive.
• C. They are incapable of mutation, making experiments more predictable.
• D. They are genetically identical to higher life forms.

Answer: (A)

Verified step by step guidance

1. Understand the question is asking why microorganisms are useful models for studying higher life forms.
2. Evaluate each option by considering the biological characteristics of microorganisms:
3. - Option 1: Microorganisms have simple structures and reproduce rapidly, which allows scientists to observe biological processes more easily and quickly.
4. - Option 2: Microorganisms do require nutrients to survive, so this statement is incorrect.
5. - Option 3: Microorganisms are capable of mutation, which is important for studying genetics and evolution, so this statement is false.
6. - Option 4: Microorganisms are not genetically identical to higher life forms, although they share some fundamental biological processes.