AQA A-Level Biology Paper 1 Unofficial
Mark Scheme Exam Questions and Answers
Genetic material - - -
correct answer ✅The material within viruses containing 3
structures and genetic information.
Capsid - - -
correct answer ✅The protein coat surrounding the genetic
material of a virus.
Attachment protein - - -
correct answer ✅Protein on a virus that binds to complementary
receptors on T helper cells.
Lipid envelope - - -
correct answer ✅A membrane surrounding the capsid of some
viruses.
Acellular viruses - - -
correct answer ✅Viruses that lack cellular structure and
organelles, unable to reproduce on their own.
, AQA A-Level Biology Paper 1 Unofficial
Mark Scheme Exam Questions and Answers
Antibiotics vs viruses - - -
correct answer ✅Antibiotics target organelles like cell walls and
ribosomes, which viruses lack.
Eukaryotic cell - - -
correct answer ✅A cell with a nucleus and other organelles, such
as mitochondria, ER, and a nuclear envelope.
Cellulose vs chitin - - -
correct answer ✅Both made of glucose, form microfibrils, and
have 1,4-glycosidic bonds.
Insect gas exchange adaptation - - -
correct answer ✅Tracheoles thin for short diffusion pathways,
liquid aids diffusion into tissues.
Non-competitive enzyme inhibition - - -
correct answer ✅Binds to an allosteric site, changing the enzyme's
tertiary structure and inactivating it.
Mark Scheme Exam Questions and Answers
Genetic material - - -
correct answer ✅The material within viruses containing 3
structures and genetic information.
Capsid - - -
correct answer ✅The protein coat surrounding the genetic
material of a virus.
Attachment protein - - -
correct answer ✅Protein on a virus that binds to complementary
receptors on T helper cells.
Lipid envelope - - -
correct answer ✅A membrane surrounding the capsid of some
viruses.
Acellular viruses - - -
correct answer ✅Viruses that lack cellular structure and
organelles, unable to reproduce on their own.
, AQA A-Level Biology Paper 1 Unofficial
Mark Scheme Exam Questions and Answers
Antibiotics vs viruses - - -
correct answer ✅Antibiotics target organelles like cell walls and
ribosomes, which viruses lack.
Eukaryotic cell - - -
correct answer ✅A cell with a nucleus and other organelles, such
as mitochondria, ER, and a nuclear envelope.
Cellulose vs chitin - - -
correct answer ✅Both made of glucose, form microfibrils, and
have 1,4-glycosidic bonds.
Insect gas exchange adaptation - - -
correct answer ✅Tracheoles thin for short diffusion pathways,
liquid aids diffusion into tissues.
Non-competitive enzyme inhibition - - -
correct answer ✅Binds to an allosteric site, changing the enzyme's
tertiary structure and inactivating it.
