(Question)
Q: What part of a mature plant cell is responsible for storing substances like water, enzymes, and salts? Choices: - little vacuole - second vacuole - large vacuole - central vacuole A:
(Answer)
central vacuole

(Question)
Q: Unlike liver bile, 'juice' produced by what organ is clear and composed mostly of water along with some salts, sodium bicarbonate, and digestive enzymes? Choices: - spleen - gallbladder - stomach - pancreas A:
(Answer)
pancreas

(Question)
Q: In mammals, sound waves are collected by the external, cartilaginous part of the ear called the pinna, then travel through the auditory canal and cause vibration of the thin diaphragm called the tympanum or this? Choices: - speaker drum - microphone drum - head drum - ear drum A:
(Answer)
ear drum