Question

a cell lives in a pond. it contains specialized parts surrounded by membranes that help it perform functions like producing energy, digesting food, and moving around.
a cell lives in a boiling hot spring. it uses chemicals like sulfur for energy instead of sunlight or food. its dna floats freely inside of its cytoplasm.
a cell is part of a plant’s stem. its dna is found within a nucleus. it contains other membrane - bound organelles, including chloroplasts that use sunlight to make food.

Explanation:

1. Eukaryotic cells have membrane - bound organelles like mitochondria for energy production, lysosomes for digestion etc. The first cell with specialized membrane - bound parts is eukaryotic.
2. Prokaryotic cells lack a nucleus and have free - floating DNA in the cytoplasm. The second cell living in a hot spring with free - floating DNA is prokaryotic.
3. Plant cells are eukaryotic. They have a nucleus containing DNA and membrane - bound organelles like chloroplasts for photosynthesis. The third cell from a plant stem is eukaryotic.

Answer:

1. Eukaryotic
2. Prokaryotic
3. Eukaryotic