Aqa A-Level Biology Paper 2 198 Correctly Answered Questions Latest Update

1. Refer to the specific individuals (using their number) 2. Explain what happened with the genes (passed on recessive/dominant) 3. Describe the genotype of your examples and mention their phenotype (homozygous/heterozygous etc) {Ans: Pedigree Questions Mark Scheme (3)}The type of genes an individual has {Ans: Genotype}Different forms of a gene {Ans: Allele}Thin filament {Ans: Actin}The inheritance of a single gene {Ans: Monohybrid inheritance}1. Reaction with ATP breaks binding of actin-myosin bridge 2. Provides energy to move myosin head {Ans: What is the role of ATP in myofibril contraction ? (2)}1. GN and gn linked 2. GgNn individual produces mainly GN and gn gametes 3. Crossing over produces some Gn and gN gametes 4. So fewer Ggnn and ggNn individuals. {Ans: Use your knowledge of gene linkage to explain the results. (4)}1. High visual sensitivity 2. Can detect light in low light intensity as many rod cells are connected to a single bipolar cell (spatial summation) 3. Low visual acuity (quality of vision) 4. Rhodopsin {Ans: Rod Characteristics (The Where)}NH4+ --> NO2- --> NO3- by nitrifying bacteria. {Ans: Nitrification (3)}1. Electrical activity only through Bundle of His 2. Wave of electrical activity