Q: Q: What forms the small holes found in bread? A: | OPTIONS:
- yeast
- oxygen
- carbon monoxide gas
- carbon dioxide gas
A: carbon dioxide gas

Q: Q: Sodium and chloride ions have equal but what charges? A: | OPTIONS:
- path
- positive
- simple
- opposite
A: opposite

Q: Q: Hydrogen gas is generated by the reaction of nitric acid and what else? A: | OPTIONS:
- gaseous iron
- martian iron
- carbon
- elemental iron
A: elemental iron

Q: Q: What is it in bone marrow transplants that may cause a graft versus host reaction? A: | OPTIONS:
- tumors
- neutrophils
- cancer
- lymphocytes
A: lymphocytes