Question

escherichia coli, or e. coli, is a species of bacteria. entamoeba histolytica, or e. histolytica, is a single - celled amoeba. what do e. coli and e. histolytica have in common? select all that apply.
a. they depend on sources of energy or food.
b. they are unable to respond to changes in their environment.
c. they maintain homeostasis by cell specialization.

Explanation:

• Option A: All living organisms, including single - celled ones like E. coli and E. histolytica, depend on sources of energy or food. For example, E. coli can obtain energy from various organic compounds in its environment.
• Option B: Single - celled organisms can respond to changes in their environment. E. coli can sense and move towards nutrients (chemotaxis), and E. histolytica can respond to chemical signals in its host environment.
• Option C: Cell specialization is a characteristic of multicellular organisms. In multicellular organisms, different cells have specific functions (e.g., nerve cells for conduction, blood cells for transport). Single - celled organisms like E. coli and E. histolytica perform all necessary life functions within a single cell and do not have cell specialization for maintaining homeostasis in the context of a multicellular system.

Answer:

A. They depend on sources of energy or food, B. They are able to respond to changes in their environment.