Level 2 

91156: Demonstrate understanding of life processes at the cellular level

2022 paper 

2021 paper 

2020 paper 

2019 paper 

2018 paper 

2017 paper 

2016 paper 

2015 paper 

2014 paper

2013 paper

91157: Demonstrate understanding of genetic variation and change

2022 paper 

2021 paper 

2020 paper 

2019 paper 

2018 paper 

2017 paper 

2016 paper 

2015 paper 

2014 paper

2013 paper

91159: Demonstrate understanding of gene expression

2022 paper 

2021 paper 

2020 paper 

2019 paper 

2018 paper 

2017 paper 

2016 paper 

2015 paper 

2014 paper

2013 paper

91606: Demonstrate understanding of trends in human evolution

2022 paper 

2021 paper 

2020 paper 

2019 paper 

2018 paper 

2017 paper 

2016 paper 

2015 paper 

2014 paper