AP Biology Unit

The atomic number of sulfur is 16. Sulfur combines with hydrogen by covalent bonding to form a compound, hydrogen sulfide. Based on the number of valence electrons in a sulfur atom, predict the molecular formula of the compound.

• H₃S₂

• H₂S

• HS₂

• HS

Tags

NGSS.MS-PS1-1

Which chemical group is most likely to be responsible for an organic molecule behaving as a base?

• carbonyl

• amino

• phosphate

• hydroxyl

Which of the following categories includes all others in the list?

• carbohydrate

• polysaccharide

• disaccharide

• starch

Which of the following statements concerning unsaturated fats is true?

• They contain more hydrogen than do saturated fats having the same number of carbon atoms.

• They generally solidify at room temperature.

• They are more common in animals than in plants.

• They have double bonds in their fatty acid chains.

Tags

NGSS.HS-PS1-2

The structural level of a protein least affected by a disruption in hydrogen bonding is the

• primary level.

• secondary level.

• tertiary level.

• quaternary level.

The molecular formula for glucose is C₆H₁₂O₆. What would be the molecular formula for a polymer made by linking 10 glucose molecules together by dehydration reactions?

• C₆₀H₁₁₁0₅₁

• C₆₀H₁₀₂0₅₁

• C₆₀H₁₂₀0₆₀

• C₆₀H₁₀₀0₅₀

Tags

NGSS.HS-LS1-6

What is the input for the light reactions?

• Light energy

• ATP

• NADPH

• H₂O

Tags

NGSS.HS-LS1-5

Where does the Calvin cycle take place?

• Cytosol

• Thylakoid membrane

• Stroma

• Mitochondrial matrix

What is the output for the light reactions?

• Light energy

• ATP

• NADPH

• H₂O

Tags

NGSS.HS-LS1-5

How many turns of the Calvin cycle are required for 1 G3P to be synthesized?

• 1

• 2

• 3

• 6