Q: Q: What two substances do plants give off when they make food? Choices: - water and oil - carbon dioxide and oxygen - chlorophyll and nitrogen - oxygen and water A:
A: oxygen and water

Q: Q: Carbon dioxide molecules consist of a central carbon atom bonded to how many oxygen atoms? Choices: - one - four - three - two A:
A: two

Q: Q: What type of compounds can form crystals? Choices: - integral compounds - magnetic compounds - molecular compounds - ionic compounds A:
A: ionic compounds

Q: Q: Deleting or inserting a nitrogen base causes what? Choices: - a placentation mutation - a degenerative mutation - a photoinhibition mutation - a frameshift mutation A:
A: a frameshift mutation