Strategies Review of Key Quizzes
with 100% Verified Solutions (Latest
Boost your grade with this complete exam pack for AQA A Level Biology. It
features 53 tough 4, 5, and 6-mark essay and extended-response questions
paired with verified, top-band answers. Save revision time and learn exactly how
to score full marks.
What Is Included
• 53 high-value exam questions worth 4, 5, or 6 marks.
• Focus on core practicals, data analysis, and synoptic links.
• Clear, verified model answers written to match AQA mark schemes.
• Examiner tips on how to gain extra AO1, AO2, and AO3 marks.
Key Benefits
• Targeted practice: Master the hardest long-answer questions on the
paper.
• Exam technique: See the exact keywords and structure examiners want
to see.
• Instant revision: Stop guessing what the mark scheme means and review
ready-made model answers.
• Stress-free prep: Feel confident and ready for any extended-response
challenge on exam day.
1
, Quiz_________________?
A laboratory has oat plants containing the resistance gene and a supply of plasmids.
Describe how bacteria may be produced which have the resistance gene in their plasmids.
(6) -
Answer✅
1. Cut desired gene (from DNA) of oat plant;
2. Using restriction endonuclease (restriction enzyme);
3. Cut plasmid open;
4. With (same) restriction endonuclease;
5. Sticky ends/unpaired bases attached;
6. Use (DNA) ligase to join;
7. Return plasmid to (bacterial) cells;
8. Use of Ca2+/calcium salts/electric shock;
Quiz_________________?
A mutation can lead to the production of a non-functional enzyme. Explain how. (6) -
Answer✅
1. Change/mutation in base/nucleotide
sequence (of DNA/gene);
2. Change in amino acid
sequence/primary structure (of
enzyme);
3. Change in hydrogen/ionic/disulfide
bonds;
4. Change in the tertiary
structure/shape;
5. Change in active site;
2
, 6. Substrate not complementary/cannot
bind (to enzyme/active site) / no
enzyme-substrate complexes form;
Quiz_________________?
Atheroma formation increases a person's risk of dying. Explain how. (5) -
Answer✅
1. Atheroma is fatty material/cholesterol/foam cells/plaque/calcium deposits/LDL;
2. In wall of artery;
3. (Higher risk of) aneurysm/described;
4. (Higher risk of) thrombus formation/blood clot;
5. Blocks coronary artery;
6. Less oxygen/glucose to heart muscle/cells/tissue;
7. Reduces/prevents respiration;
8. Causing myocardial infarction/heart attack;
9. Blocks artery to brain;
10. Causes stroke/stroke described;
Quiz_________________?
Blood leaving the kidney eventually returns to the kidney.
Describe the pattern of blood circulation in a mammal that causes blood to return to the
kidney. (6) -
Answer✅
1. (blood flows from kidney along) renal vein to vena cava;
2. (along) vena cava to right atrium/side of heart;
3. (along) pulmonary artery to lungs;
4. (along) capillaries to pulmonary vein;
3
with 100% Verified Solutions (Latest
Boost your grade with this complete exam pack for AQA A Level Biology. It
features 53 tough 4, 5, and 6-mark essay and extended-response questions
paired with verified, top-band answers. Save revision time and learn exactly how
to score full marks.
What Is Included
• 53 high-value exam questions worth 4, 5, or 6 marks.
• Focus on core practicals, data analysis, and synoptic links.
• Clear, verified model answers written to match AQA mark schemes.
• Examiner tips on how to gain extra AO1, AO2, and AO3 marks.
Key Benefits
• Targeted practice: Master the hardest long-answer questions on the
paper.
• Exam technique: See the exact keywords and structure examiners want
to see.
• Instant revision: Stop guessing what the mark scheme means and review
ready-made model answers.
• Stress-free prep: Feel confident and ready for any extended-response
challenge on exam day.
1
, Quiz_________________?
A laboratory has oat plants containing the resistance gene and a supply of plasmids.
Describe how bacteria may be produced which have the resistance gene in their plasmids.
(6) -
Answer✅
1. Cut desired gene (from DNA) of oat plant;
2. Using restriction endonuclease (restriction enzyme);
3. Cut plasmid open;
4. With (same) restriction endonuclease;
5. Sticky ends/unpaired bases attached;
6. Use (DNA) ligase to join;
7. Return plasmid to (bacterial) cells;
8. Use of Ca2+/calcium salts/electric shock;
Quiz_________________?
A mutation can lead to the production of a non-functional enzyme. Explain how. (6) -
Answer✅
1. Change/mutation in base/nucleotide
sequence (of DNA/gene);
2. Change in amino acid
sequence/primary structure (of
enzyme);
3. Change in hydrogen/ionic/disulfide
bonds;
4. Change in the tertiary
structure/shape;
5. Change in active site;
2
, 6. Substrate not complementary/cannot
bind (to enzyme/active site) / no
enzyme-substrate complexes form;
Quiz_________________?
Atheroma formation increases a person's risk of dying. Explain how. (5) -
Answer✅
1. Atheroma is fatty material/cholesterol/foam cells/plaque/calcium deposits/LDL;
2. In wall of artery;
3. (Higher risk of) aneurysm/described;
4. (Higher risk of) thrombus formation/blood clot;
5. Blocks coronary artery;
6. Less oxygen/glucose to heart muscle/cells/tissue;
7. Reduces/prevents respiration;
8. Causing myocardial infarction/heart attack;
9. Blocks artery to brain;
10. Causes stroke/stroke described;
Quiz_________________?
Blood leaving the kidney eventually returns to the kidney.
Describe the pattern of blood circulation in a mammal that causes blood to return to the
kidney. (6) -
Answer✅
1. (blood flows from kidney along) renal vein to vena cava;
2. (along) vena cava to right atrium/side of heart;
3. (along) pulmonary artery to lungs;
4. (along) capillaries to pulmonary vein;
3
