20 Questions
Which organelle is responsible for the formation of ribosomes?
Nucleolus
What is the composition of a single ribosome?
2 subunits (large and small)
Where are free ribosomes distributed within the cell?
Cytoplasm
How are attached ribosomes linked to cellular membranes?
Linked by their large subunit
What structures in nerve cells exhibit localized basophilia due to the presence of attached ribosomes?
Nissl granules
What is the primary function of polysomes?
Protein synthesis for secretion
How are cytoplasmic microtubules best demonstrated?
By immunofluorescent staining using fluorescent-labeled antibody to tubulin
What is the primary function of centrioles?
Initiation of cell division and spindle formation
What is the composition of thick filaments?
Thicker filaments made of protein myosin
Where are cilia present in the cells?
On the free surface of certain cells
Which type of cytoplasmic inclusion is responsible for storing fats in the form of small droplets or large globules?
Lipofuscin
Which type of cytoplasmic inclusion represents waste products and increases with age?
Lipofuscin
What is the primary function of melanin in the body?
Protecting against ultraviolet rays
Which type of cytoplasmic inclusion is formed inside the body to carry O2 and CO2?
Hemoglobin
In which type of cells are glycogen granules (alpha) and glycogen granules (beta) found?
Liver cells and muscles
Which type of chromatin appears as aggregations of electron-dense granules?
All of the above
Which organelle is continuous with the membranes of the endoplasmic reticulum in the cytoplasm?
Nuclear envelope
What is the primary function of nuclear pores in the nuclear membrane?
Exchange of chemical molecules between the nucleus and the cytoplasm
In which type of cell would you find multinucleated cells?
Osteoclasts
What type of cells possess nuclei and are called eukaryotic?
Liver cells
Test your knowledge about non-membranous organelles such as ribosomes, centrioles, and cytoskeleton components like microtubules, microfilaments, and microtrabecular lattice. This quiz covers the formation and characteristics of ribosomes, including their composition and structure.
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