Problem:OPTIONS:
- acids
- chromosomes
- enzymes
- hormones

Q: Receptors for what chemical messengers recognize molecules with specific shapes and side groups, and respond only to those that are recognized? A:
****
A: hormones

Q: Insect wings are part of the exoskeleton and attached to the what? A:
OPTIONS:
- neck
- head
- spines
- thorax
thorax

Q: Which theory is the idea that the characteristics of living organisms are controlled by genes, which are passed from parents to their offspring? A:
OPTIONS:
- species theory
- evolution theory
- fossil theory
- gene theory

Answer: gene theory

Question: Q: The pion can only be created by violating the conservation of what? A:
OPTIONS:
- quantum physics
- time-space
- momentum
- mass-energy
Answer: mass-energy

input with options: Q: Which direction from the source do pollutants in an aquifer spread? A:
OPTIONS:
- southward
- forward
- inward
- outward
output: outward

Problem: OPTIONS:
- mars
- jupitor
- earth
- mercury
Q: Q: What is the name of the smallest planet in our solar system, which is also nearest to the sun? A:
Answer:
mercury