Multiple Choice
Which of the following organelles has ribosomes embedded on its surface?
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2. Cell Chemistry & Cell Components
Introduction to Eukaryotic Organelles
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Which of the following is not a membranous organelle?
A
Mitochondrion
B
Golgi Apparatus
C
Endoplasmic Reticulum
D
Ribosome
Verified step by step guidance1
Begin by understanding what a membranous organelle is. Membranous organelles are structures within a cell that are enclosed by a lipid membrane, which separates their internal environment from the cytoplasm.
Review the list of organelles provided in the problem: Mitochondrion, Golgi Apparatus, Endoplasmic Reticulum, and Ribosome.
Identify the characteristics of each organelle. Mitochondrion, Golgi Apparatus, and Endoplasmic Reticulum are all surrounded by membranes, making them membranous organelles.
Consider the ribosome. Ribosomes are not surrounded by a membrane; they are composed of RNA and proteins and are involved in protein synthesis.
Conclude that the ribosome is the organelle that does not fit the definition of a membranous organelle, as it lacks a surrounding membrane.
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