(Question)
Q: What is formed when sperm mixes with secretions from the various other glands of the reproductive system? Choices: - testosterone - urine - hormone - semen A:
(Answer)
semen

(Question)
Q: What was diorite commonly used for in ancient civilizations? Choices: - school - currency - medicine - art A:
(Answer)
art

(Question)
Q: The four major classes of biological macromolecules include carbohydrates, lipids, proteins, and what else? Choices: - liquids - fats - structural acids - nucleic acids A:
(Answer)
nucleic acids