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HomeHomework HelpbiologyRibosomes Structure and Function

Ribosomes Structure and Function

Ribosomes are complex molecular machines composed of ribosomal RNA and proteins that facilitate the translation of messenger RNA into polypeptides, thereby playing a crucial role in protein synthesis within both prokaryotic and eukaryotic cells. They can be found free-floating in the cytoplasm or attached to the endoplasmic reticulum, contributing to the production of proteins essential for cellular functions.

intermediate
2 hours
Biology
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Overview

Ribosomes are essential cellular structures responsible for protein synthesis, translating mRNA into amino acids. They consist of two subunits made of ribosomal RNA (rRNA) and proteins, and they play a critical role in all living organisms. Understanding ribosomes is vital for grasping how cells fun...

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Key Terms

Ribosome
A cellular structure that synthesizes proteins.

Example: Ribosomes can be found free in the cytoplasm or attached to the endoplasmic reticulum.

mRNA
Messenger RNA that carries genetic information from DNA to ribosomes.

Example: mRNA is transcribed from DNA and guides protein synthesis.

tRNA
Transfer RNA that brings amino acids to ribosomes during protein synthesis.

Example: Each tRNA molecule carries a specific amino acid to the ribosome.

Peptide Bond
A bond formed between amino acids during protein synthesis.

Example: Peptide bonds link amino acids together to form proteins.

Subunit
The individual components that make up a ribosome.

Example: Ribosomes consist of a large and a small subunit.

Translation
The process of synthesizing proteins from mRNA.

Example: Translation occurs in the ribosome where mRNA is decoded.

Related Topics

Protein Folding
The process by which a protein structure assumes its functional shape.
intermediate
Gene Regulation
How genes are turned on or off in cells, affecting protein synthesis.
intermediate
Cellular Respiration
The process by which cells convert nutrients into energy, involving proteins.
intermediate

Key Concepts

Protein SynthesismRNA TranslationRibosomal StructureCellular Function