| A | B |
|---|
| hemoglobin | transports oxygen in the blood |
| lysozyme | hydrolyzes bacterial cell walls |
| collagen | serves as scaffolding for support of tissues and organs, most abundant protein |
| pepsin | hydrolyzes dietary protein in the stomach |
| trypsin | hydrolyzes dietary protein in the small intestine |
| casein | found in milk, supplies amino acids to newborns |
| insulin | acts as a signal for the fed state |
| glucagon | acts as a signal for the starved state |
| myoglobin | stores oxygen in muscle cells |
| cytochrome c | involved in the mitochondrial electron transport chain |
| ferritin | stores iron in the spleen |
| rhodopsin | transmits visual signals |
| fibrin | forms the insoluble network of blood clots |
| amylase | hydrolyzes starch in the mouth |
| thrombin | catalyzes the conversion of fibrinogen to fibrin |
| antibody | binds to a foreign antigen |
| protein kinase C | catalyzes the phosphorylation of several cellular proteins |
| aldolase | an enzyme involved in the glycolysis pathway |
| aconitase | an enzyme involved in the citric acid cycle |
| reverse transcriptase | catalyzes the synthesis of DNA from an RNA template |
