PMC MDCAT BIOLOGY MCQS

Here Are 50 Quizzes / Mcqs On

PMC MDCAT BIOLOGY

With Correct Answers For 2023:



1. What is the smallest unit of life?

a) Cell

b) Molecule

c) Atom

d) Organ

**Answer: a) Cell**



2. Which organelle is responsible for energy production in a cell?

a) Golgi apparatus

b) Mitochondria

c) Endoplasmic reticulum

d) Nucleus

**Answer: b) Mitochondria**



3. The process of breaking down glucose to release energy is called:

a) Photosynthesis

b) Respiration

c) Fermentation

, d) Digestion

**Answer: b) Respiration**



4. Which of the following is a nitrogenous waste product excreted by mammals?

a) Uric acid

b) Ammonia

c) Glucose

d) Lactic acid

**Answer: a) Uric acid**



5. The human heart has how many chambers?

a) 2

b) 3

c) 4

d) 5

**Answer: c) 4**



6. Which blood vessels carry oxygenated blood away from the heart to the body?

a) Veins

b) Arteries

c) Capillaries

d) Aorta

, **Answer: b) Arteries**



7. Which hormone is responsible for regulating blood sugar levels?

a) Insulin

b) Estrogen

c) Testosterone

d) Thyroxine

**Answer: a) Insulin**



8. Which system is responsible for protecting the body against pathogens?

a) Nervous system

b) Skeletal system

c) Immune system

d) Respiratory system

**Answer: c) Immune system**



9. Which type of tissue connects muscle to bone?

a) Ligament

b) Tendon

c) Cartilage

d) Epithelium

**Answer: b) Tendon**