The answer to this question would be: D)there are a few types of enzymes, but they each perform many types of reactions. Enzyme is vital for a living since it will speed up the chemical reaction rate. This will help much in making and processing energy. But enzyme works like lock and key, which means that a specific enzyme will help specific reaction.
The correct option is D. Enzymes are biological catalysts which speed up the rate of biochemical reactions in the system of living organisms. There are many types of enzymes and enzymes are very specific about the type of biochemical reaction they catalyze. Enzymes only catalyze specific chemical reactions; for instance, the enzyme lactase catalyze the breaking down of lactose to glucose. This enzyme will not catalyze any other biochemical reaction except the conversion of lactose to glucose.
The fertilized cell that results is referred to as a zygote. A zygote is diploid cell, which means that it has twice the number of chromosomes as a gamete
