18 Questions
What is the composition of chromosomes in a cell?
DNA and protein
What are the functional segments of DNA called?
Genes
What is visible as rod-shaped structures when a cell is about to divide?
Chromatin material
What is the nuclear region of a cell called in organisms lacking a nuclear membrane?
Nucleoid
Which type of organisms lack a nuclear membrane in their cells?
Prokaryotes
Which organelle plays a central role in cellular reproduction and directing chemical activities of the cell?
Nucleus
What is the function of the plasma membrane in a cell?
Regulating what enters and exits the cell
Which organelle is responsible for protein synthesis in both prokaryotic and eukaryotic cells?
Ribosomes
In prokaryotic cells, which structure is absent compared to eukaryotic cells?
Endoplasmic reticulum
Which structure in a prokaryotic cell is associated with membranous vesicles and not plastids?
Chlorophyll
What is the function of the nucleoid in prokaryotic cells?
Storage of genetic material
Which structure is common to both prokaryotic and eukaryotic cells?
Ribosomes
What is the main function of the rough endoplasmic reticulum (RER)?
Protein manufacture
Which organelle is absent in prokaryotic cells but present in eukaryotic cells?
Endoplasmic reticulum
What differentiates the nuclear region in eukaryotic cells from prokaryotic cells?
Presence of multiple chromosomes
Which structure is responsible for the manufacture of fat molecules important for cell function?
Smooth endoplasmic reticulum (SER)
What is the main function of ribosomes in a cell?
Protein manufacture
Which organelle looks rough under a microscope due to ribosomes attached to its surface?
Rough endoplasmic reticulum (RER)
Test your knowledge about the structure and function of chromosomes in the cell nucleus, including their composition, role in inheritance, and organization of genetic information.
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