AP Biology: Unit 1 Chemistry of life

Which two functional groups are always found in amino acids?

• ketone and aldehyde
• hydroxyl and aldehyde
• carboxyl and amine
• carbonyl and carboxyl

Which of the following best summarizes the relationship between dehydration reactions and hydrolysis?

• Hydrolysis only occurs in the urinary system, and dehydration reactions only occur in the digestive tract.
• Hydrolysis creates monomers, and dehydration reactions break down polymers.
• Dehydration reactions can occur only after hydrolysis.
• Dehydration reactions assemble polymers, and hydrolysis breaks down polymers.

This is a picture of a?

• Amino Acid
• Nucleic Acid
• Lipid
• Polysaccharide

This is a picture of a?

• Polypeptide
• Nuceotide
• Steroid
• Polysaccharide

What are the monomers of carbohydrates?

• Nucleotides
• Amino Acids
• Fatty Acids
• Monosaccharides

What macromolecule makes up the cell membrane's lining?

• Saturated Fatty acid chains
• Phospholipids
• Polypeptide chains
• Cellulose polysaccharide Chains

What element is found in proteins and nucleic acids but not carbs nor lipids?

• carbon
• hydrogen
• nitrogen
• oxygen

Enzymes and hormones are both examples of:

• proteins
• lipids
• nucleic acids
• carbohydrates

Alpha helix and beta pleated sheets are part of what level of protein structure?

• primary
• secondary
• tertiary
• quaternary

Because water has a positively charged end and a negatively charged end, it can be described as

• amphipathic
• hydrophobic
• polar
• nonpolar