BMAT Trivia 2 — Questions and Answers
Question 1: Which organ produces the enzyme amylase to begin carbohydrate digestion?
- Stomach
- Pancreas
- Salivary glands (Correct answer)
- Small intestine
Correct answer: Salivary glands
Salivary glands secrete salivary amylase, initiating starch digestion in the mouth.
Question 2: What is the approximate pH of healthy human blood?
- 6.8
- 7.4 (Correct answer)
- 7.0
- 8.0
Correct answer: 7.4
Normal arterial blood pH is maintained between 7.35 and 7.45, averaging around 7.4.
Question 3: Which of the following gases makes up the largest proportion of Earth's atmosphere?
- Oxygen
- Carbon dioxide
- Argon
- Nitrogen (Correct answer)
Correct answer: Nitrogen
Nitrogen constitutes approximately 78% of Earth's atmosphere by volume.
Question 4: A train travels 240 km in 3 hours. What is its average speed in m/s?
- 22.2 m/s (Correct answer)
- 80 m/s
- 13.3 m/s
- 66.7 m/s
Correct answer: 22.2 m/s
240 km / 3 h = 80 km/h; converting: 80,000 m / 3,600 s ≈ 22.2 m/s.
Question 5: Which part of the brain is primarily responsible for coordinating movement and balance?
- Cerebrum
- Medulla oblongata
- Cerebellum (Correct answer)
- Hypothalamus
Correct answer: Cerebellum
The cerebellum coordinates voluntary movements, balance, and fine motor control.
Question 6: What type of bond holds the two strands of a DNA double helix together?
- Ionic bonds
- Covalent bonds
- Peptide bonds
- Hydrogen bonds (Correct answer)
Correct answer: Hydrogen bonds
Complementary base pairs in DNA are connected by hydrogen bonds between the two strands.
Question 7: If a solution has a hydrogen ion concentration of 1 × 10⁻³ mol/L, what is its pH?
- 3 (Correct answer)
- 11
- 7
- −3
Correct answer: 3
pH = −log[H⁺] = −log(10⁻³) = 3.
BMAT Trivia 2
Which organ produces the enzyme amylase to begin carbohydrate digestion?