30 Questions
Which organelle is responsible for the synthesis of lipids and various carbohydrates?
Smooth endoplasmic reticulum
What provides the cytoplasm and the cell with their structure?
Cytoskeleton
Where are dangerous chemicals detoxified within the cell?
Rough endoplasmic reticulum
Which organelle is continuous with the nuclear membrane?
Endoplasmic reticulum
Where are various products transported from one portion of the cell to another?
Cytoskeleton
What is the function of Golgi apparatus in a cell?
Packaging and modifying proteins
What is the primary function of the nucleolus?
To synthesize and assemble ribosomes
What is the primary difference between euchromatin and heterochromatin?
Euchromatin is loosely packed and metabolically active, while heterochromatin is tightly packed and relatively inactive.
Which of the following statements about the cytoplasm is accurate?
The cytoplasm is the space between the nucleus and the cell membrane, filled with cytosol and organelles.
What is the primary role of ribosomes in the cell?
To serve as the site of protein synthesis
Which of the following statements about the nuclear membrane is correct?
The inner membrane of the nuclear membrane is firmly attached to clumps of euchromatin.
What is the primary function of the nucleoplasm?
To serve as a fluid environment for the nucleolus and chromatin
What is the primary function of lysosomes within a cell?
To break down and recycle cellular components and materials taken up from outside the cell
Which of the following statements about peroxisomes is true?
Peroxisomes contain enzymes that break down hydrogen peroxide into water and oxygen, acting as detoxifiers
What is the common structural feature shared by cilia and flagella?
They have a 9+2 arrangement of microtubules, with nine peripheral pairs surrounding two central microtubules
Which of the following statements about cilia and flagella is true?
Cilia are more numerous on the cell surface than flagella
What is the process called when lysosomes break down old cellular organelles within the cell?
Autophagy
What is the nickname given to lysosomes due to their role in breaking down old cellular components?
Suicide bags
What is the typical size range of the nucleus in a eukaryotic cell?
4-10 m in diameter
What is the main function of the nucleolus within the nucleus?
To produce ribosomes
Which of the following is NOT a component of the nuclear envelope?
Nucleoplasm
What is the function of the nuclear pores in the nuclear envelope?
To allow the passage of certain molecules in and out of the nucleus
Which of the following is true about the relationship between the nuclear envelope and the endoplasmic reticulum?
The outer membrane of the nuclear envelope is occasionally continuous with the endoplasmic reticulum
Why do mature mammalian red blood cells (RBCs) lack a nucleus?
Both b and c
What is the main function of the Golgi apparatus in the cell?
Forming lysosomes
Where is ribosomal RNA (rRNA) manufactured in the cell?
Nucleolus
What is the function of ribosomes attached to the rough endoplasmic reticulum?
Synthesizing proteins for export from the cell
How are mitochondria structurally different from other organelles in the cell?
They have a double membrane structure with cristae
What determines the number of Golgi apparatus bodies in a cell?
The activity level of the cell
Which organelle is responsible for transporting material from the endoplasmic reticulum to the Golgi apparatus?
Transport vesicles
This quiz focuses on the nucleus, which is the largest and most visible component within eukaryotic cells. It contains the cell's genetic material organized as DNA molecules and proteins to form chromosomes. Explore the structure and functions of the nucleus in this quiz.
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