Multiple Choice
Which organ system is primarily responsible for transporting nutrients, gases, and waste products throughout the body?
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2. Cell Chemistry & Cell Components
Introduction to Eukaryotic Organelles
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Which of the following generally defines the nucleolus?
A
A region within the nucleus responsible for ribosomal RNA synthesis and ribosome assembly
B
A membrane-bound organelle involved in energy production
C
A structure that modifies, sorts, and packages proteins for secretion
D
A network of protein filaments that provides structural support to the cell
Verified step by step guidance1
Identify the location of the nucleolus within the cell. The nucleolus is found inside the nucleus of eukaryotic cells.
Understand the primary function of the nucleolus. It is responsible for synthesizing ribosomal RNA (rRNA) and assembling ribosomes, which are essential for protein synthesis.
Differentiate the nucleolus from other cellular structures. Unlike membrane-bound organelles, the nucleolus is not surrounded by a membrane.
Compare the nucleolus with other options provided: energy production is a function of mitochondria, protein modification and packaging is done by the Golgi apparatus, and structural support is provided by the cytoskeleton.
Conclude that the nucleolus is specifically involved in ribosomal RNA synthesis and ribosome assembly, distinguishing it from the other options.
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