Prokaryotic Ribosomes vs. Eukaryotic Ribosomes: Know the Difference

By Shumaila Saeed || Updated on December 25, 2023

Prokaryotic ribosomes are smaller (70S) and simpler than eukaryotic ribosomes, which are larger (80S) and found in more complex cells.

Prokaryotic Ribosomes vs. Eukaryotic Ribosomes

Key Differences

Prokaryotic ribosomes are smaller, typically 70S in size, and are found in simpler, single-celled organisms without a nucleus. Eukaryotic ribosomes are larger, usually 80S, and are present in complex cells with a nucleus.

Shumaila Saeed

Dec 10, 2023

The 70S prokaryotic ribosome is made up of two subunits: 50S and 30S. The 80S eukaryotic ribosome comprises two different subunits: 60S and 40S.

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Dec 10, 2023

Both prokaryotic and eukaryotic ribosomes play a crucial role in protein synthesis, but the process varies slightly due to differences in their RNA and protein content.

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Dec 10, 2023

Many antibiotics selectively target prokaryotic ribosomes, disrupting their function without affecting eukaryotic ribosomes. This is due to structural differences between the two types.

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Dec 10, 2023

In prokaryotes, ribosomes are distributed freely in the cytoplasm, while in eukaryotes, they are found both in the cytoplasm and on the rough endoplasmic reticulum.

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Dec 10, 2023

Comparison Chart

Size

Smaller (70S)

Larger (80S)

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Dec 10, 2023

Subunit Composition

Made up of 50S and 30S subunits

Comprises 60S and 40S subunits

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Dec 10, 2023

Function in Protein Synthesis

Similar role, but with slight process variations

Similar role, adapted to more complex cell machinery

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Dec 10, 2023

Sensitivity to Antibiotics

Generally more sensitive

Less sensitive

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Dec 10, 2023

Cellular Location

Freely in the cytoplasm

In cytoplasm and on rough ER

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Dec 10, 2023

Prokaryotic Ribosomes and Eukaryotic Ribosomes Definitions

Prokaryotic Ribosomes

Comprise 50S and 30S subunits.

The 50S and 30S subunits assemble to form prokaryotic ribosomes.

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Dec 03, 2023

Eukaryotic Ribosomes

Comprise 60S and 40S subunits.

The 60S and 40S subunits join together to form eukaryotic ribosomes.

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Dec 03, 2023

Prokaryotic Ribosomes

More sensitive to antibiotics than eukaryotic ribosomes.

Antibiotics like tetracycline inhibit prokaryotic ribosomes.

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Dec 03, 2023

Eukaryotic Ribosomes

Less sensitive to antibiotics than prokaryotic ribosomes.

Most antibiotics do not affect eukaryotic ribosomes.

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Dec 03, 2023

Prokaryotic Ribosomes

Essential for protein synthesis in bacteria.

Prokaryotic ribosomes are crucial for bacterial growth and reproduction.

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Dec 03, 2023

Eukaryotic Ribosomes

Larger ribosomes (80S) in eukaryotic cells.

Eukaryotic ribosomes are integral to protein production in human cells.

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Dec 03, 2023

Prokaryotic Ribosomes

Found freely floating in the cytoplasm.

In bacteria, prokaryotic ribosomes synthesize proteins in the cytoplasm.

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Dec 03, 2023

Eukaryotic Ribosomes

Involved in protein synthesis in complex cells.

Eukaryotic ribosomes are found in both animal and plant cells.

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Dec 03, 2023

Prokaryotic Ribosomes

Smaller ribosomes (70S) in prokaryotic cells.

Prokaryotic ribosomes are targets for certain antibiotics.

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Dec 03, 2023

Eukaryotic Ribosomes

Located in the cytoplasm and on the rough endoplasmic reticulum.

Eukaryotic ribosomes on the rough ER synthesize membrane-bound proteins.

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Dec 03, 2023

Repeatedly Asked Queries

What are eukaryotic ribosomes?

They are larger ribosomes found in more complex eukaryotic cells.

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Dec 10, 2023

What size are eukaryotic ribosomes?

They are usually 80S in size.

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Dec 10, 2023

What makes prokaryotic ribosomes different from eukaryotic ones?

They differ in size, sensitivity to antibiotics, and cellular location.

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Dec 10, 2023

Where are eukaryotic ribosomes found?

In the cytoplasm and on the rough endoplasmic reticulum.

Shumaila Saeed

Dec 10, 2023

What are the subunits of eukaryotic ribosomes?

They comprise 60S and 40S subunits.

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Dec 10, 2023

What are prokaryotic ribosomes?

They are smaller ribosomes found in prokaryotic cells, like bacteria.

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Dec 10, 2023

What size are prokaryotic ribosomes?

They are typically 70S in size.

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Dec 10, 2023

Are prokaryotic ribosomes simpler than eukaryotic ones?

Yes, they are generally considered simpler.

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Dec 10, 2023

Can prokaryotic ribosomes be inhibited by drugs?

Yes, many antibiotics inhibit prokaryotic ribosomes.

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Dec 10, 2023

Is the function of prokaryotic ribosomes different from eukaryotic ribosomes?

The basic function of protein synthesis is similar, but the process varies slightly.

Shumaila Saeed

Dec 10, 2023

Can antibiotics target eukaryotic ribosomes?

Generally, no. Antibiotics usually target prokaryotic ribosomes.

Shumaila Saeed

Dec 10, 2023

Where are prokaryotic ribosomes located in the cell?

They are found freely floating in the cytoplasm.

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Dec 10, 2023

Do prokaryotic and eukaryotic ribosomes have different RNA content?

Yes, there are differences in their RNA and protein compositions.

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Dec 10, 2023

Are prokaryotic ribosomes involved in protein synthesis?

Yes, they play a key role in protein synthesis in prokaryotic cells.

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Dec 10, 2023

Do eukaryotic ribosomes synthesize proteins?

Yes, they are essential for protein synthesis in eukaryotic cells.

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Dec 10, 2023

Do eukaryotic ribosomes have a more complex structure?

Yes, they are more complex and larger in size.

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Dec 10, 2023

Are eukaryotic ribosomes affected by common antibiotics?

Generally, no, they are less sensitive to antibiotics.

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Dec 10, 2023

Why are eukaryotic ribosomes not targeted by most antibiotics?

Because of their structural differences from prokaryotic ribosomes.

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Dec 10, 2023

Can the differences in ribosomes be used for medical treatments?

Yes, targeting prokaryotic ribosomes is a basis for many antibiotic therapies.

Shumaila Saeed

Dec 10, 2023

What are the subunits of prokaryotic ribosomes?

They consist of 50S and 30S subunits.

Shumaila Saeed

Dec 10, 2023

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About Author

Written by

Shumaila Saeed

Shumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.

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