Multiple Choice
Which of the following contains an incorrect match of the organelle function/description?
1. Introduction to Biochemistry
Cell Organelles
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Which of the following contains a correct match?
A
80S: Eukaryotic large ribosomal subunit
B
60S: Prokaryotic large ribosomal subunit
C
40S: Eukaryotic small ribosomal subunit
D
70S: Eukaryotic large ribosomal subunit
Verified step by step guidance1
Understand the structure of ribosomes in both eukaryotic and prokaryotic cells. Eukaryotic ribosomes are 80S, composed of a 60S large subunit and a 40S small subunit. Prokaryotic ribosomes are 70S, composed of a 50S large subunit and a 30S small subunit.
Identify the incorrect matches in the given options. The 80S ribosome is not a subunit but the entire eukaryotic ribosome. The 60S subunit is part of the eukaryotic ribosome, not prokaryotic.
Recognize that the 40S subunit is indeed the small subunit of the eukaryotic ribosome, making it a correct match.
Note that the 70S ribosome is the entire prokaryotic ribosome, not a subunit of the eukaryotic ribosome.
Conclude that the correct match from the options provided is '40S: Eukaryotic small ribosomal subunit'.
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