Based on the information provided, actin is most likely a structural protein. It helps maintain the shape and polarity of cells and plays a significant role in muscle contraction, which aligns with the function of structural proteins that provide support and allow the body to move.
Actin is a protein that helps the cell maintain its shape and polarity. It also plays a major role in muscle contraction. A table summarizing the cellular functions of different types of proteins is shown.
Protein Type Function
Enzyme proteins Increase the rate of chemical reactions
Structural proteins Provide structure and support for cells; on a larger scale, allow the body to move
Messenger proteins Transmit signals to coordinate biological processes between different cells, tissues, and organs
Transport proteins Bind and carry atoms and small molecules within cells and throughout the body
Based on this information, actin is most likely -
a messenger protein
a structural protein
a transport protein
an enzyme protein
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