Multiple Choice
Which of the following terms correctly describes a mature red blood cell in humans?
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5. Cell Components
Introduction to Eukaryotic Organelles
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Which of the following is a feature of nuclear pores in eukaryotic cells?
A
They synthesize ribosomal RNA.
B
They are composed primarily of phospholipids.
C
They generate ATP for nuclear processes.
D
They regulate the transport of molecules between the nucleus and cytoplasm.
Verified step by step guidance1
Understand the function of nuclear pores: Nuclear pores are protein complexes embedded in the nuclear envelope of eukaryotic cells. Their primary role is to regulate the transport of molecules, such as RNA and proteins, between the nucleus and the cytoplasm.
Eliminate incorrect options: Analyze each option provided in the question. For example, nuclear pores do not synthesize ribosomal RNA; this is the function of the nucleolus within the nucleus.
Consider the composition of nuclear pores: They are not composed primarily of phospholipids. Instead, they are made up of nucleoporins, which are specialized proteins forming the pore complex.
Evaluate the energy-related option: Nuclear pores do not generate ATP for nuclear processes. ATP generation occurs in mitochondria, not in nuclear pores.
Confirm the correct answer: The correct feature of nuclear pores is their ability to regulate the transport of molecules between the nucleus and cytoplasm, ensuring selective exchange of materials essential for cellular function.
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