<span>plagioclase feldspars have striations and potassium feldspars don't have striations</span>
Answer:
Enzyme
Explanation:
An enzyme is an organic catalyst that speeds up a reaction but can be recovered unchanged.
Human lactase consists of 4092 amino acid groups and has a molar mass of about 280 000 u, so it has a complex structure.
True
Enzymes help the body in digestion and other bodily functions which involve chemicals.