Drag the tiles to the boxes to form correct pairs. Match each type of protein with its function.
Tiles
enzyme
signaling
structural
defense
Pairs
strengthens cells, tissues, and organs
fights infection and repairs tissue
catalyzes chemical reactions
Transmits information from outside the cell to inside.

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.