AP Biology Unit 1 practice questions: Chemistry of Life
8 original multiple-choice questions on AP Bio Unit 1, chemistry of life. Answer each one in your browser and read the explanation, then review the key ideas below.
Question 1 of 8
Water's high specific heat and its cohesion are mainly the result of
Question 2 of 8
When two amino acids join to form a dipeptide, the reaction
Question 3 of 8
A nucleotide is made of
Question 4 of 8
What holds the two strands of a DNA double helix together?
Question 5 of 8
A triglyceride is made of
Question 6 of 8
What are the monomers of proteins?
Question 7 of 8
Which element is found in all amino acids but not in carbohydrates?
Question 8 of 8
Hydrolysis reactions
Key ideas in Unit 1
- Water's polarity and hydrogen bonding explain cohesion, adhesion, high specific heat and its role as a solvent.
- Carbon forms four bonds, building the backbones of biological molecules.
- Monomers join by dehydration synthesis and are split by hydrolysis.
- Know the four macromolecules: carbohydrates, lipids, proteins (with four levels of structure) and nucleic acids.
- Structure determines function: a change in a protein's shape changes what it can do.
More AP Bio practice
Unit 2: Cell Structure and Function →
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