Biology Basics Quiz Questions
1. The basic unit of life is:
(a) Cell
(b) Tissue
(c) Organ
(d) Organ system
2. The process by which plants convert sunlight into energy is called:
(a) Respiration
(b) Photosynthesis
(c) Digestion
(d) Excretion
3. The control center of a cell is the:
(a) Cell membrane
(b) Cytoplasm
(c) Nucleus
(d) Mitochondria
4. Animals that eat only plants are called:
(a) Carnivores
(b) Herbivores
(c) Omnivores
(d) Decomposers
5. The process of breaking down food into simpler substances is called:
(a) Digestion
(b) Respiration
(c) Photosynthesis
(d) Excretion
6. The blood vessel that carries oxygenated blood away from the heart is the:
(a) Pulmonary artery
(b) Pulmonary vein
(c) Aorta
(d) Vena cava
7. The process of taking in oxygen and releasing carbon dioxide is called:
(a) Digestion
(b) Photosynthesis
(c) Respiration
(d) Excretion
8. The largest organ in the human body is the:
(a) Brain
(b) Heart
(c) Liver
(d) Skin
9. The process by which organisms produce offspring is called:
(a) Growth
(b) Reproduction
(c) Development
(d) Metabolism
10. The green pigment in plants that helps in photosynthesis is called:
(a) Chlorophyll
(b) Carotene
(c) Xanthophyll
(d) Anthocyanin
11. The bones that protect the brain are called:
(a) Ribs
(b) Skull
(c) Vertebrae
(d) Pelvis
12. The process by which water vapor is released from plants into the atmosphere is called:
(a) Transpiration
(b) Evaporation
(c) Condensation
(d) Precipitation
13. The basic unit of heredity is:
(a) Gene
(b) Chromosome
(c) DNA
(d) Protein
14. The process by which white blood cells fight infection is called:
(a) Immunity
(b) Inflammation
(c) Allergy
(d) Fever
15. The largest artery in the human body is the:
(a) Aorta
(b) Pulmonary artery
(c) Carotid artery
(d) Coronary artery
16. The process by which food is broken down by enzymes in the digestive system is called:
(a) Digestion
(b) Absorption
(c) Assimilation
(d) Elimination
17. The main function of red blood cells is to:
(a) Fight infection
(b) Carry oxygen
(c) Clotting blood
(d) Produce antibodies
18. The process by which water moves from an area of high concentration to an area of low concentration is called:
(a) Osmosis
(b) Diffusion
(c) Active transport
(d) Passive transport
19. The part of the brain responsible for controlling voluntary movements is the:
(a) Cerebrum
(b) Cerebellum
(c) Medulla oblongata
(d) Spinal cord
20. The main function of the kidneys is to:
(a) Filter blood
(b) Digest food
(c) Produce hormones
(d) Control body temperature
21. The part of the eye that detects light is the:
(a) Cornea
(b) Iris
(c) Pupil
(d) Retina
22. The process by which a cell divides to produce two identical daughter cells is called:
(a) Mitosis
(b) Meiosis
(c) Fertilization
(d) Cloning
23. The main function of the lungs is to:
(a) Exchange gases
(b) Digest food
(c) Produce blood
(d) Filter waste
24. The part of the plant that absorbs water and minerals from the soil is the:
(a) Stem
(b) Leaf
(c) Root
(d) Flower
25. The main function of the nervous system is:
(a) Digestion
(b) Respiration
(c) Coordination
(d) Reproduction
Biology Basics Quiz Questions with Answers
1. The basic unit of life is:
(a) Cell
2. The process by which plants convert sunlight into energy is called:
(b) Photosynthesis
3. The control center of a cell is the:
(c) Nucleus
4. Animals that eat only plants are called:
(b) Herbivores
5. The process of breaking down food into simpler substances is called:
(a) Digestion
6. The blood vessel that carries oxygenated blood away from the heart is the:
(c) Aorta
7. The process of taking in oxygen and releasing carbon dioxide is called:
(c) Respiration
8. The largest organ in the human body is the:
(d) Skin
9. The process by which organisms produce offspring is called:
(b) Reproduction
10. The green pigment in plants that helps in photosynthesis is called:
(a) Chlorophyll
11. The bones that protect the brain are called:
(b) Skull
12. The process by which water vapor is released from plants into the atmosphere is called:
(a) Transpiration
13. The basic unit of heredity is:
(a) Gene
14. The process by which white blood cells fight infection is called:
(a) Immunity
15. The largest artery in the human body is the:
(a) Aorta
16. The process by which food is broken down by enzymes in the digestive system is called:
(a) Digestion
17. The main function of red blood cells is to:
(b) Carry oxygen
18. The process by which water moves from an area of high concentration to an area of low concentration is called:
(a) Osmosis
19. The part of the brain responsible for controlling voluntary movements is the:
(b) Cerebellum
20. The main function of the kidneys is to:
(a) Filter blood
21. The part of the eye that detects light is the:
(d) Retina
22. The process by which a cell divides to produce two identical daughter cells is called:
(a) Mitosis
23. The main function of the lungs is to:
(a) Exchange gases
24. The part of the plant that absorbs water and minerals from the soil is the:
(c) Root
25. The main function of the nervous system is:
(c) Coordination
