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Questions and Answers
What characterizes the rough endoplasmic reticulum (RER)?
What characterizes the rough endoplasmic reticulum (RER)?
- Absence of membrane sheets called cisternae
- Lack of ribosomes in its structure
- Presence of membrane-bound ribosomes (correct)
- Synthesis of lipids instead of proteins
Why are ribosomes not a stable part of the RER's structure?
Why are ribosomes not a stable part of the RER's structure?
- They are permanent fixtures of the membrane
- They do not play a role in protein synthesis
- They are constantly being bound and released from the membrane (correct)
- They are only found in other organelles
What is the main function of the rough endoplasmic reticulum in cells?
What is the main function of the rough endoplasmic reticulum in cells?
- Generating ATP for energy
- Assisting with cell division
- Storing genetic material
- Producing secreted proteins (correct)
What distinguishes the RER morphologically?
What distinguishes the RER morphologically?
Which process involves separating very fine insoluble solids from a liquid?
Which process involves separating very fine insoluble solids from a liquid?
In which process are grains separated from their stalks by beating them?
In which process are grains separated from their stalks by beating them?
Which method is used to manually separate stones from grains of rice?
Which method is used to manually separate stones from grains of rice?
What is the purpose of churning as described in the text?
What is the purpose of churning as described in the text?
In the context of winnowing, what happens to the lighter solids (husks) when separated from the heavier solids (grains)?
In the context of winnowing, what happens to the lighter solids (husks) when separated from the heavier solids (grains)?
How does handpicking help in distinguishing a stone from a grain of rice?
How does handpicking help in distinguishing a stone from a grain of rice?
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