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- Complex carbohydrates are made up of sugar molecules that are strung together in long, complex chains. Complex carbohydrates are found in foods such as peas, beans, whole grains, and vegetables. Both ...
- ... formed, and the external bleeding stops. Next, small molecules, called clotting factors, cause strands of blood-borne ...
- Antigens are large molecules (usually proteins) on the surface of cells, viruses, fungi, bacteria, and some non-living substances such as toxins, chemicals, ...
- ... Oxygen binds to the iron in the heme molecules. Each step requires the presence of an enzyme. ...