Question: Q: What are specialized cells that are capable of sending electrical as well as chemical signals? A:
OPTIONS:
- hormones
- ions
- enzymes
- neurons
Answer: neurons

input with options: Q: Combined substances are either compounds or what? A:
OPTIONS:
- solutions
- concentrations
- combinations
- mixtures
output: mixtures

Q: Q: Methyl groups are found within what? A:

OPTIONS:
- rna acids
- DNA molecules
- peptide chains
- amino acids

A: amino acids

input: OPTIONS:
- fuel
- carbon
- coal
- iron Now, answer this question: Q: Rust is an example of the reaction of oxygen with what? A:
A:
output: iron

Q: What is an alloy of both tin and copper? A:

OPTIONS:
- Cobalt
- silver
- Aluminium
- bronze

Answer: bronze

Q: Q: The ability for a plasma membrane to only allow certain molecules in or out of the cell is referred to as what? A:

OPTIONS:
- periodic permeability
- total permeability
- moderate permeability
- selective permeability

A:
selective permeability