Q: Answer the following question given this paragraph: 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: Answer the following question given this paragraph: Carbon dioxide molecules consist of a central carbon atom bonded to 2 oxygen atoms. 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: Answer the following question given this paragraph: Many compounds form molecules, but ionic compounds form crystals instead. A crystal consists of many alternating positive and negative ions bonded together in a matrix. Look at the crystal of sodium chloride (NaCl) in the Figure below . The sodium and chloride ions are attracted to each other because they are oppositely charged, so they form ionic bonds. Q: What type of compounds can form crystals? Choices: - integral compounds - magnetic compounds - molecular compounds - ionic compounds A:
A: ionic compounds

Q: Answer the following question given this paragraph: Deleting or inserting a nitrogen base causes a frameshift mutation. All of the codons following the mutation are misread. This may be disastrous. To see why, consider this English-language analogy. Take the sentence "The big dog ate the red cat. " If the second letter of "big" is deleted, then the sentence becomes: "The bgd oga tet her edc at. " Deleting a single letter makes the rest of the sentence impossible to read. 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