Question

1. the digestion of pizza, the light reactions in photosynthesis, and the removal of a stain by laundry detergents all require which are biological proteins that lower the activation energy for chemical reactions.

a enzymes
b antibiotics
c phospholipids
d monosaccharides

Explanation:

Enzymes are biological proteins that lower the activation - energy for chemical reactions. Digestion involves digestive enzymes, light reactions in photosynthesis are catalyzed by enzymes, and some laundry detergents contain enzymes for stain - removal. Antibiotics fight bacteria, phospholipids are part of cell membranes, and monosaccharides are simple sugars.

Answer:

A. enzymes