Q: What substances, which serve as catalysts, are involved in most of the chemical reactions that take place in organisms? A:

OPTIONS:
- proteins
- vitamins
- carbohydrates
- enzymes

Answer: enzymes

Problem: OPTIONS:
- synthase
- mucosa
- sucrase
- amylase
Q: Q: The major salivary enzyme is called? A:
Answer: amylase

Problem:OPTIONS:
- ossicles
- cilia
- antlers
- spicules

Q: What are the sharp projections that specialized cells grow called? A:
****
A: spicules

Q: What type of animals breathe with gills as larvae and with lungs as adults? A:
OPTIONS:
- insects
- reptiles
- mammals
- amphibians
amphibians

Q: Photoautotrophs use what energy source to self-manufacture their own food? A:
OPTIONS:
- water
- chlorophyll
- air
- light

Answer: light

input with options: Q: What is the main cause of outdoor air pollution? A:
OPTIONS:
- methane from livestock
- aerosol spray
- chimneys
- burning of fossil fuels
output:
burning of fossil fuels