Rough Endoplasmic Reticulum (RER)
The rough endoplasmic reticulum (RER) is a network of membranous tubules and flattened sacs studded with ribosomes. It is a key organelle involved in the synthesis and processing of proteins.
Structure of Rough Endoplasmic Reticulum
The RER has a characteristic rough appearance due to the presence of ribosomes on its surface. These ribosomes are responsible for protein synthesis. The RER is connected to the nuclear envelope and extends throughout the cytoplasm.
Function of Rough Endoplasmic Reticulum
The primary function of the RER is to synthesize proteins. It plays a crucial role in the production of secretory and membrane proteins. As the newly synthesized proteins enter the lumen of the RER, they undergo post-translational modifications such as folding, glycosylation, and disulfide bond formation.
Study Guide
Key Concepts
- Structure of rough endoplasmic reticulum
- Presence of ribosomes on the surface
- Connection to the nuclear envelope
- Function in protein synthesis and processing
Key Terminology
Discussion Points
- Describe the structure of rough endoplasmic reticulum and its role in protein synthesis.
- Explain the significance of ribosomes on the surface of the RER.
- Discuss the relationship between RER and the production of secretory and membrane proteins.
◂Earth Science Worksheets and Study Guides High School. Rocks I
Worksheet/Answer key
Rocks I 
Worksheet/Answer key
Rocks I Worksheet/Answer key
Rocks I Vocabulary/Answer key
Rocks I Vocabulary/Answer key
Rocks I Vocabulary/Answer key
Rocks I
Worksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
EARTH AND SPACE SCIENCE
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Construct an explanation from evidence for the processes that generate the transformation of rocks in Earth’s crust, including chemical composition of minerals and characteristics of sedimentary, igneous, and metamorphic rocks.
ENVIRONMENTAL SCIENCE
Earth and Human Activity
Engage in argument from evidence to defend how coastal, marine, and freshwater sources (e.g., estuaries, marshes, tidal pools, wetlands, beaches, inlets, rivers, lakes, oceans, coral reefs) support biodiversity, economic stability, and human recreation.