input: OPTIONS:
- their teachers
- their guesses
- their faith
- their hypothesis Now, answer this question: Q: Scientists use the principles of what to make predictions, which they then test? A:
A:
output: their hypothesis

Q: The light reactions take place in which membranes? A:

OPTIONS:
- the cell membranes
- the phospholipid
- the stroma
- the thylakoid

Answer: the thylakoid

Problem: OPTIONS:
- one
- five
- three
- four
Q: Q: How many classes of biochemical compounds are there? A:
Answer: four

Problem:OPTIONS:
- the reflex vacuole
- the elongated vacuole
- the bare vacuole
- the contractile vacuole

Q: What is the star-like structure inside the paramecia? A:
****
A: the contractile vacuole

Q: What's the most common disorder from having an extra chromosome? A:
OPTIONS:
- Williams syndrome
- Turner syndrome
- cri-du-chat syndrome
- down syndrome
down syndrome

Q: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good what? A:
OPTIONS:
- magnet
- absorber
- transporter
- insulator

Answer:
insulator