SBI 4U Unit 1 Biochemistry

Select the molecule that is the monomer of proteins.

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Which of the following is true of both starch and cellulose?

• They are both polysaccharides.

• They have the same structure.

• They can both be digested by humans

• They are both used for energy storage in plants.

Which part of an amino acid has different chemical properties?

• the amino group

• the peptide bond

• the R group (or side chain)

• the carboxyl group

Which macromolecule does not form polymers?

• protein

• lipid

• carbohydrate

• nucleic acid

What are the monomers and polymers of proteins called?

• nucleotide...nucleic acid

• nucleic acid...protein

• amino acid...polypeptide

• monosaccharide...polysaccharide

What is this molecule?

• Saturated fatty acid

• Unsaturated fatty acid

• Phospholipid

• Triglycerol

What is the polarity of the phosphate heads on phospholipids?

• Polar

• Nonpolar

• Hydrophobic

• Bananaphobic

What are the parts of a nucleotide?

• nitrogen base and phosphate group

• Nitrogen base

• 5 carbon sugar and nitrogen base

• nitrogen base, 5 carbon sugar, and phosphate group

What are fats made of ?

• lipid with 3 fatty acids

• lipids

• lipid with 2 fatty acids

• none of the above

Protein loses shape in high temp and high solute this is called?

• hydrolysis

• protein function

• dehydration

• denature