11. Which part of the eye changes shape to help focus on objects at different distances?
a) Retina
b) Sclera
c) Iris
d) Lens
12. What is the purpose of the eustachian tube in the ear?
a) It helps regulate balance and orientation
b) It connects the middle ear to the throat, equalizing pressure
c) It detects sound vibrations and converts them into electrical signals
d) It contains tiny hairs that detect sound waves
13. Which of the following is not one of the primary colors detected by the human eye?
a) Red
b) Yellow
c) Blue
d) Green
14. Where are taste buds located?
a) Skin
b) Tongue
c) Nose
d) Stomach
15. The human nose is responsible for:
a) Tasting
b) Smelling
c) Seeing
d) Hearing