input: OPTIONS:
- hormone
- metabolite
- neurotransmitter
- catalyst Now, answer this question: Q: Enzymes are a type of what, and as such, they are not reactants in the reactions they control? A:
A:
output: catalyst

Q: In resting neurons, the plasma membrane has many open potassium channels but few open of which other channels? A:

OPTIONS:
- silicon
- oxygen
- sulfur
- sodium

Answer: sodium

Problem: OPTIONS:
- winds
- Oscillations
- Currents
- waves
Q: Q: Reflection, refraction, and diffraction are examples of what type of interaction? A:
Answer: waves

Problem:OPTIONS:
- lack of ogranic
- lack of a emerge
- lack of a cycle
- lack of a backbone

Q: What is one trait that the sponge and tarantula share? A:
****
A: lack of a backbone

Q: What do young female meerkats act as in colonies? A:
OPTIONS:
- predators
- defenders
- midwives
- babysitters
babysitters

Q: What are two types of lobe finned fish? A:
OPTIONS:
- sharks and piranha
- piranha and pike
- moles and lungfish
- coelacanths and lungfish

Answer:
coelacanths and lungfish