Multiple Choice
In eukaryotic cell architecture, what is the primary structural polysaccharide that makes up the fungal cell wall?
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1. Overview of Cell Biology
Eukaryotic Cell Architecture
Multiple Choice
In eukaryotic cells, which of the following organelles does NOT have a surrounding membrane?
A
Ribosome
B
Golgi apparatus
C
Mitochondrion
D
Lysosome
Verified step by step guidance1
Step 1: Understand the question is asking which organelle in eukaryotic cells lacks a surrounding membrane. This means identifying which structure is not enclosed by a lipid bilayer membrane.
Step 2: Recall that the Golgi apparatus, mitochondrion, and lysosome are all membrane-bound organelles. Each of these has a lipid bilayer membrane that separates its internal environment from the cytoplasm.
Step 3: Recognize that ribosomes are different because they are not membrane-bound. Ribosomes are complexes of RNA and protein that synthesize proteins and are found either floating freely in the cytoplasm or attached to the rough endoplasmic reticulum.
Step 4: Conclude that since ribosomes do not have a surrounding membrane, they are the correct answer to the question.
Step 5: Summarize that membrane-bound organelles have a lipid bilayer membrane, while ribosomes are non-membranous organelles involved in protein synthesis.
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