AQA A LEVEL BIOLOGY PAPER 1 2026
PRACTICE TEST SHEET FULL SOLUTIONS
CORRECT ANSWERS PREPARATION SET
◉ What reaction breaks polymers into monomers?
Answer: A hydrolysis reaction.
◉ What is an example of a polymer and its monomer?
Answer: Protein is a polymer made from amino acids.
◉ What is another example of a polymer and its monomer?
Answer: DNA is a polymer made from nucleotides.
◉ What is the structure of glycogen related to its function?
Answer: Glycogen is helical and branched, making it compact and
easily hydrolyzed.
◉ How does the structure of starch relate to its function?
Answer: Starch has a helical shape, is large and insoluble, and is
branched for easy glucose release.
◉ What is the structure of cellulose?
,Answer: Cellulose consists of long, straight chains of β-glucose
joined by hydrogen bonds.
◉ What are the differences between starch and cellulose?
Answer: Starch is helical and branched, while cellulose is straight
and unbranched.
◉ How is lactose formed?
Answer: Lactose is formed by a condensation reaction between
glucose and galactose.
◉ Where in the cell is lactose attached to form a glycoprotein?
Answer: In the Golgi apparatus.
◉ What are triglycerides and phospholipids compared?
Answer: Both contain ester bonds and glycerol, but triglycerides
have three fatty acids while phospholipids have two fatty acids and a
phosphate group.
◉ Why can phospholipids form a bilayer?
Answer: Phospholipids have both hydrophilic and hydrophobic
regions.
, ◉ What is the primary structure of a protein?
Answer: A specific sequence of amino acids joined by peptide bonds.
◉ What is the role of maltase in the body?
Answer: Maltase breaks down maltose into glucose at normal body
temperature.
◉ What is competitive inhibition?
Answer: Inhibitors that resemble the substrate bind to the active
site, preventing the formation of the enzyme-substrate complex.
◉ What is non-competitive inhibition?
Answer: Inhibitors bind to a site other than the active site, changing
the shape of the active site.
◉ What is the structure of DNA?
Answer: DNA is a polymer of nucleotides with a double helix
structure held by hydrogen bonds.
◉ What are the similarities between DNA and RNA?
Answer: Both are polymers of nucleotides and have phosphodiester
bonds.
PRACTICE TEST SHEET FULL SOLUTIONS
CORRECT ANSWERS PREPARATION SET
◉ What reaction breaks polymers into monomers?
Answer: A hydrolysis reaction.
◉ What is an example of a polymer and its monomer?
Answer: Protein is a polymer made from amino acids.
◉ What is another example of a polymer and its monomer?
Answer: DNA is a polymer made from nucleotides.
◉ What is the structure of glycogen related to its function?
Answer: Glycogen is helical and branched, making it compact and
easily hydrolyzed.
◉ How does the structure of starch relate to its function?
Answer: Starch has a helical shape, is large and insoluble, and is
branched for easy glucose release.
◉ What is the structure of cellulose?
,Answer: Cellulose consists of long, straight chains of β-glucose
joined by hydrogen bonds.
◉ What are the differences between starch and cellulose?
Answer: Starch is helical and branched, while cellulose is straight
and unbranched.
◉ How is lactose formed?
Answer: Lactose is formed by a condensation reaction between
glucose and galactose.
◉ Where in the cell is lactose attached to form a glycoprotein?
Answer: In the Golgi apparatus.
◉ What are triglycerides and phospholipids compared?
Answer: Both contain ester bonds and glycerol, but triglycerides
have three fatty acids while phospholipids have two fatty acids and a
phosphate group.
◉ Why can phospholipids form a bilayer?
Answer: Phospholipids have both hydrophilic and hydrophobic
regions.
, ◉ What is the primary structure of a protein?
Answer: A specific sequence of amino acids joined by peptide bonds.
◉ What is the role of maltase in the body?
Answer: Maltase breaks down maltose into glucose at normal body
temperature.
◉ What is competitive inhibition?
Answer: Inhibitors that resemble the substrate bind to the active
site, preventing the formation of the enzyme-substrate complex.
◉ What is non-competitive inhibition?
Answer: Inhibitors bind to a site other than the active site, changing
the shape of the active site.
◉ What is the structure of DNA?
Answer: DNA is a polymer of nucleotides with a double helix
structure held by hydrogen bonds.
◉ What are the similarities between DNA and RNA?
Answer: Both are polymers of nucleotides and have phosphodiester
bonds.
