Q: What was the first widely used antibiotic? Choices: - aspirin - alcohol - benadryl - penicillin A:
penicillin

Q: There are three basic types of hormones: lipid-derived, amino acid-derived, and what? Choices: - manipulated - secreted - acidic - peptide A:
peptide

Q: Q: How many classes of biochemical compounds are there? Choices: - one - five - three - four A:
A: four

Question: Q: What is the force of attraction between things that have mass Choices: - friction - motion - momentum - gravity A:
Answer: gravity

*Question*
Q: What is the name for the water-splitting step of photosynthesis? Choices: - hydrolysis - peristalsis - cellular respiration - photolysis A:
**Answer**
photolysis

Q: In vertebrates, what tissue is a type of connective tissue that supports the entire body structure? Choices: - cartilage - blood - collagen - bone A:
bone