Cilia are

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Study for the Galen Anatomy and Physiology (AandP) 1 Theory Exam 2. Gain confidence with flashcards, pinpoint areas needing focus, and strengthen understanding through detailed explanations. Excel in your exam with comprehensive preparation!

Multiple Choice

Cilia are

Explanation:
Cilia are slender extensions of the plasma membrane that project from the cell surface. They are built from microtubules and can beat in coordinated waves to move mucus or fluids across epithelial surfaces, or serve sensory roles in some cells. This is different from the cytosol, which is the intracellular fluid filling the cell and does not form protrusions. Energy production happens mainly in mitochondria (and glycolysis in the cytosol), so cilia are not energy factories. Ribosomes are produced in the nucleolus within the nucleus; cilia are not sites of ribosome production. So, the best description is that cilia are slender extensions of the plasma membrane.

Cilia are slender extensions of the plasma membrane that project from the cell surface. They are built from microtubules and can beat in coordinated waves to move mucus or fluids across epithelial surfaces, or serve sensory roles in some cells. This is different from the cytosol, which is the intracellular fluid filling the cell and does not form protrusions. Energy production happens mainly in mitochondria (and glycolysis in the cytosol), so cilia are not energy factories. Ribosomes are produced in the nucleolus within the nucleus; cilia are not sites of ribosome production. So, the best description is that cilia are slender extensions of the plasma membrane.

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