You are presented with the quiz "what are not cells" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "viruses are not cells" and "examples include influenza, rabies, HIV, and Herpes viruses". So, what's the best answer to the question?

OPTIONS:
- blood
- fossils
- rabies
- an object
- tissue
- barnacles
- skin
- bacteria

Answer: rabies

You are presented with the quiz "What can a certain protein affect in meat?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cartilage is a tough tissue that contains a protein called collagen" and "collagen contributes to meat toughness". So, what's the best answer to the question?

OPTIONS:
- health
- piousness
- stamina
- retina
- toughness
- liveliness
- saltiness
- Energy

Answer: toughness

You are presented with the quiz "What takes in food by eating producers or other living things?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "consumers take in food by eating producers or other living things" and "animals are consumers , they feed on the primary producers or on other consumers". So, what's the best answer to the question?

OPTIONS:
- humans
- fur seals
- trees
- fungi
- algae
- animals
- people
- plants

Answer: animals

You are presented with the quiz "What food do astronauts eat while in space?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "astronauts require preserved food for extended flights" and "on their trips into space, astronauts eat foods preserved by irradiation". So, what's the best answer to the question?

OPTIONS:
- layers of fat
- squids
- Proteins
- fur and fat
- kinetic energy
- sea urchins
- nutrients
- Irradiated

Answer:
Irradiated