교과서 질문
Label the structures of the following prokaryotic and eukaryotic cells. With a single word or short phrase, explain the function of each structure.
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7. Prokaryotic Cell Structures & Functions
Prokaryotic & Eukaryotic Cells
Multiple Choice
Which of the following is found in all prokaryotic cells but only some eukaryotic cells?
A
Cell wall
B
Chloroplasts
C
Mitochondria
D
Nucleus
검증된 단계별 안내1
Step 1: Understand the key structural differences between prokaryotic and eukaryotic cells. Prokaryotic cells are simpler and lack membrane-bound organelles, while eukaryotic cells have complex internal structures including organelles like the nucleus, mitochondria, and chloroplasts.
Step 2: Identify which structures are universally present in prokaryotic cells. For example, all prokaryotic cells have a cell wall, which provides shape and protection, but they do not have membrane-bound organelles such as mitochondria, chloroplasts, or a nucleus.
Step 3: Consider the presence of these structures in eukaryotic cells. While all eukaryotic cells have mitochondria (except some specialized cells), only plant cells and some protists have chloroplasts, and not all eukaryotic cells have a cell wall (animal cells lack it).
Step 4: Compare the options given: cell wall, chloroplasts, mitochondria, and nucleus. Determine which is found in all prokaryotes but only some eukaryotes. Since the cell wall is present in all prokaryotes and only in some eukaryotes (like plants and fungi), it fits the criteria.
Step 5: Conclude that the correct answer is the cell wall, as it is a universal feature of prokaryotic cells but only present in certain eukaryotic cells.
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