Question Constellation Sign up for free AQA · GCSE · Biology
Biology Paper 2
05.3 · 1 mark Upper-body endocrine gland products Name one hormone produced by gland A. 05.4 · 1 mark Abdominal endocrine gland products Name one hormone produced by gland B. 05.5 · 2 marks Adrenaline effects on human physiology The adrenal gland produces the hormone adrenaline. Describe two effects of adrenaline on the human body. 05.6 · 6 marks Hormonal control of human reproduction Hormones can be used for controlling human reproduction. Explain the use of hormones in: contraception; the treatment of... 06.1 · 1 mark Dominant allele concept definition What is a dominant allele? 06.2 · 2 marks Pedigree evidence for heterozygosity Person 1 is heterozygous. Explain how Figure 10 shows that person 1 is heterozygous. 06.3 · 4 marks Punnett square inheritance probability Persons 6 and 7 are expecting a fourth child. A doctor states that the probability of having a child with polydactyly is 0.5.... 06.4 · 4 marks Recessive allele population probability Cystic fibrosis (CF) is another inherited disorder caused by a mutation. The mutation occurs in a gene called CFTR. For the CFTR... 07.1 · 5 marks Maize energy transfer area calculation Calculate the area of land needed to provide enough energy from maize seeds for 1000 chickens to grow to full size. Give your... 07.2 · 3 marks Biomass pyramid construction Another farmer produced 4200 kg of maize seeds in a field. The farmer fed the maize to 1000 chickens. At full size, the mean... 07.3 · 2 marks Biomass ratio calculation Calculate the ratio of chicken biomass to maize seed biomass. Use data from Question 07.2. Give your answer in its simplest form. 07.4 · 1 mark Biomass loss from food chains Chickens can use 80% of the biomass from the maize seeds they eat for respiration and growth. What happens to the remaining 20%... 07.5 · 1 mark QPM amino acid significance comparison Which amino acids are found in significantly higher proportions in the QPM seeds? Tick (✓) one box. 07.6 · 1 mark Leucine availability and chicken growth Table 2 shows that 1 kg of QPM contains less leucine than 1 kg of normal maize. Suggest why a diet containing less leucine does... 08.1 · 2 marks Homeostasis concept definition Explain what is meant by the term 'homeostasis'. 08.2 · 4 marks Kidney filtration and selective reabsorption The kidneys have an important role in homeostasis. Describe what happens to glucose, protein and urea in the kidneys. 08.3 · 4 marks ADH control of urine concentration Explain how ADH affects the production and concentration of urine by the kidneys. 09.1 · 6 marks GM soya yield mechanisms Explain how the use of GM soya bean plants and glyphosate can increase the yield of soya beans. 09.2 · 2 marks GM soya environmental concerns Suggest two reasons why some people are concerned about the use of GM soya bean plants. Do not refer to ethical concerns or...
AQA · GCSE · Biology
Inheritance, variation and evolution
01.4 · 5 marks Punnett square inheritance probability A person with the genotype Dd and a person with the genotype dd plan to have a child. Determine the probability that the child... 01.3 · 1 mark Naming a heterozygous genotype A person with the genotype DD is homozygous. What word describes the genotype Dd? 05.6 · 3 marks Sperm-cell and liver-cell division There are two different processes of cell division in humans. Describe three differences between cell division to form sperm...
AQA · GCSE · Biology
Homeostasis and response
AQA · GCSE · Biology