Multiple Choice
Which type of organism lacks a membrane-bound nucleus?
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1. Overview of Cell Biology
Prokaryotes vs. Eukaryotes
Multiple Choice
Chloroplasts and cell walls are found only in which type of organisms?
A
Plant cells and many algal cells (eukaryotes)
B
All eukaryotic cells, including animals, fungi, plants, and protists
C
Animal cells (eukaryotes)
D
All prokaryotic cells, including bacteria and archaea
Verified step by step guidance1
Step 1: Understand the key organelles mentioned: chloroplasts and cell walls. Chloroplasts are organelles responsible for photosynthesis, and cell walls provide structural support and protection to the cell.
Step 2: Recall which types of cells contain chloroplasts. Chloroplasts are found in plant cells and some algal cells, both of which are eukaryotic organisms capable of photosynthesis.
Step 3: Consider the presence of cell walls. Cell walls are found in plant cells, many algal cells, fungi, and some prokaryotes, but the composition differs. In plants and algae, the cell wall is mainly made of cellulose.
Step 4: Analyze the options given. Animal cells do not have chloroplasts or cell walls, and prokaryotic cells have cell walls but no chloroplasts. Fungi have cell walls but no chloroplasts.
Step 5: Conclude that chloroplasts and cell walls together are characteristic of plant cells and many algal cells (both eukaryotes), making this the correct answer.
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