You are presented with the quiz "Hydrogen bonds cause a tremendous force when a substance does what" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hydrogen bonds cause water to expand when it freezes" and "freezing water expands with tremendous force". So, what's the best answer to the question?

OPTIONS:
- strong
- moves
- harm
- expelled
- freezes
- heat
- breakdown
- propagate

Answer: freezes

You are presented with the quiz "what have special structures for penetrating a host?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "fungi have special structures for penetrating a host" and "fungi include yeasts, molds, and fleshy fungi". So, what's the best answer to the question?

OPTIONS:
- amoeba
- bats
- mammals
- sound waves
- gamma rays
- ferns
- mold
- maples

Answer: mold

You are presented with the quiz "what adults are barrel-shaped?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "adult tunicates are barrel-shaped" and "tunicates, or sea squirts, are marine organisms covered with a gelatinous tunic". So, what's the best answer to the question?

OPTIONS:
- offspring
- fertile
- barnacles
- Length
- insects
- sea squirts
- humans
- beer

Answer: sea squirts

You are presented with the quiz "When light enters the eye through the pupil, what structure transmits information to the brain?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "when light enters the eye through the pupil , that light falls on the retina" and "pictures are formed on the retina, and are then transmitted by the optic nerve to the brain". So, what's the best answer to the question?

OPTIONS:
- an electron lens
- vision
- coded genes
- iris
- optic nerve
- Neuron.
- nerves
- aperture

Answer:
optic nerve