10 Questions
What is the primary function of the cell nucleus?
To store DNA and control the cell's activities
What is the purpose of the nuclear membrane, also called the nuclear envelope?
To separate the nucleus from the cytoplasm and regulate the movement of materials in and out of the nucleus
What is the function of the nucleolus within the cell nucleus?
To store and synthesize RNA for use in protein production
How are the nuclear membrane and the endoplasmic reticulum (ER) connected?
The outer membrane of the nuclear envelope is continuous with the ER, and the space between the two nuclear membranes is continuous with the ER lumen
What is the purpose of the nuclear pores in the nuclear membrane?
To allow the passage of materials, such as proteins and RNA, in and out of the nucleus
How does the nucleus control the cell's activities?
The nucleus sends messages to the cell to grow, replicate, or die
What is the primary role of the DNA stored within the cell nucleus?
To determine the characteristics of the cell's proteins and control the cell's activities
What is the relationship between the nucleolus and the ribosomes in the cell?
The nucleolus stores and synthesizes RNA for use in ribosome production
What is the primary function of the intracellular enzymes found within the cell nucleus?
To control cytoplasmic and nuclear activities
How does the structure of the nuclear membrane, or envelope, contribute to its function?
The double-layered membrane and nuclear pores allow for the regulated movement of materials in and out of the nucleus
Test your knowledge on the functions of cell membrane proteins such as transporting water molecules, ions, and other substances, acting as carrier proteins, and serving as receptors for water-soluble chemicals like hormones.
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