input: OPTIONS:
- hormones
- vitamins
- catalysts
- enzymes Now, answer this question: Q: Acids and bases are important in living things because what proteins typically can perform their job only at a certain level of acidity? A:
A:
output: enzymes

Q: Receptor clustering happens when what binds to the receptors? A:

OPTIONS:
- enzymes
- lipid molecules
- carbohydrates
- fas molecules

Answer: fas molecules

Problem: OPTIONS:
- Lower it
- stable it
- Pollute
- raise it
Q: Q: What do increasing greenhouse gas concentrations in the air do to the earth's temperature? A:
Answer: raise it

Problem:OPTIONS:
- to feed their offspring
- to store food
- for protection against predators
- to reach the nectar at the bottom of flowers

Q: Why do hummingbirds have long narrow bills? A:
****
A: to reach the nectar at the bottom of flowers

Q: Because the solute is moving down the concentration gradient, and no input of energy is required, facilitated diffusion is considered what type of transport? A:
OPTIONS:
- active
- neutral
- adaptive
- passive
passive

Q: Where are the oceans most polluted? A:
OPTIONS:
- in warmer waters
- on the ocean floor
- along reefs
- along coasts

Answer:
along coasts