Answers | Latest Version | 2024/2025 |
Correct & Verified
Which organ expands and contracts to create negative pressure for breathing?
A. Liver
B. Diaphragm
✔✔C. Lungs
D. Trachea
What type of muscle contraction occurs when a person holds a heavy object without moving?
✔✔A. Isometric
B. Isotonic
C. Eccentric
D. Concentric
Which part of a neuron receives electrical signals from other cells?
✔✔A. Dendrites
B. Axon
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,C. Myelin sheath
D. Synapse
Which enzyme breaks down carbohydrates in the mouth?
A. Pepsin
B. Lipase
✔✔C. Amylase
D. Trypsin
Why do veins have valves?
A. To increase blood pressure
B. To allow oxygen diffusion
✔✔C. To prevent backflow of blood
D. To speed up circulation
Which bone is the only one not directly connected to any other bone?
✔✔A. Hyoid
B. Sternum
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, C. Scapula
D. Patella
What part of the ear is responsible for balance?
A. Cochlea
✔✔B. Semicircular canals
C. Tympanic membrane
D. Ossicles
Which type of immunity is acquired by receiving antibodies from another organism?
✔✔A. Passive immunity
B. Active immunity
C. Innate immunity
D. Cellular immunity
Which gas is most abundant in Earth's atmosphere?
✔✔A. Nitrogen
B. Oxygen
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