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Multiple Choice
What is the difference between a prokaryotic and eukaryotic ribosome?
A
Both prokaryotic and eukaryotic ribosomes are 70S.
B
Both prokaryotic and eukaryotic ribosomes are 80S.
C
Prokaryotic ribosomes are 70S, while eukaryotic ribosomes are 80S.
D
Prokaryotic ribosomes are 80S, while eukaryotic ribosomes are 70S.
Verified step by step guidance
1
Understand the basic structure and function of ribosomes: Ribosomes are cellular structures responsible for protein synthesis. They are composed of ribosomal RNA (rRNA) and proteins.
Differentiate between prokaryotic and eukaryotic cells: Prokaryotic cells, such as bacteria, lack a nucleus and membrane-bound organelles, while eukaryotic cells, such as those in plants and animals, have a nucleus and membrane-bound organelles.
Identify the size of ribosomes in prokaryotes: Prokaryotic ribosomes are smaller and are referred to as 70S ribosomes, where 'S' stands for Svedberg units, a measure of sedimentation rate during centrifugation.
Identify the size of ribosomes in eukaryotes: Eukaryotic ribosomes are larger and are referred to as 80S ribosomes.
Conclude the difference: The key difference is that prokaryotic ribosomes are 70S, while eukaryotic ribosomes are 80S, reflecting their size and composition differences.