input with options: Q: Acting like drawstrings to close off the alimentary canal, what regulates the passage of material between compartments? A:
OPTIONS:
- intestine
- hamstring
- uterus
- sphincter
output: sphincter

input with options: Q: What is an insect's hard outer exoskeleton made out of? A:
OPTIONS:
- lectin
- casein
- melanin
- chitin
output: chitin

input with options: Q: Original atoms are called what type of isotopes? A:
OPTIONS:
- offspring
- component
- product
- parent
output: parent

input with options: Q: What do most ecosystems get energy from? A:
OPTIONS:
- magma
- moisture
- evaporation
- sunlight
output:
sunlight