Which components of the membrane contribute to cell identification, communication, and adhesion?

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Multiple Choice

Which components of the membrane contribute to cell identification, communication, and adhesion?

Proteins and carbohydrates embedded in the membrane are responsible for cell identification, communication, and adhesion. Carbohydrates attached to lipids and proteins extend from the cell surface as glycolipids and glycoproteins, acting like identification tags so cells can recognize each other and distinguish self from non-self. Membrane proteins function as receptors and signaling molecules, transmitting information when they bind external signals, while others act as adhesion molecules to hold cells together. This combination—surface tags for identity, receptors for communication, and adhesion proteins for sticking cells together—defines how cells interact with their neighbors and environment. Nucleic acids in the nucleus are genetic material, not components of the cell surface that mediate identification or signaling. Ribosomes on the rough endoplasmic reticulum are involved in protein synthesis, not in providing the membrane-based identity and communication features. Mitochondria are separate organelles and do not contribute to the membrane's role in cell identification or adhesion.

Proteins and carbohydrates embedded in the membrane are responsible for cell identification, communication, and adhesion. Carbohydrates attached to lipids and proteins extend from the cell surface as glycolipids and glycoproteins, acting like identification tags so cells can recognize each other and distinguish self from non-self. Membrane proteins function as receptors and signaling molecules, transmitting information when they bind external signals, while others act as adhesion molecules to hold cells together. This combination—surface tags for identity, receptors for communication, and adhesion proteins for sticking cells together—defines how cells interact with their neighbors and environment.

Nucleic acids in the nucleus are genetic material, not components of the cell surface that mediate identification or signaling. Ribosomes on the rough endoplasmic reticulum are involved in protein synthesis, not in providing the membrane-based identity and communication features. Mitochondria are separate organelles and do not contribute to the membrane's role in cell identification or adhesion.

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