9700/42 · Oct/Nov 2024

Ultrafiltration in the glomerulus and selective reabsorption in the proximal convoluted tubule.

Processes that change allele frequencies, and selective breeding of maize for vigour and uniform height.

Genetic engineering and gene therapy for an inherited eye disease, and why the eye suits gene therapy.

A monohybrid genetic diagram for tomato fruit colour and the ratios from a dihybrid cross.

Continuous and discontinuous variation, causes of variation, and natural selection.

Using DCPIP as a redox indicator to measure the effect of temperature on yeast respiration.

Chromatography of chloroplast pigments, the role of accessory pigments, and the light-independent stage.

Structure of a motor neurone, the neuromuscular junction and the order of events in muscle contraction.

Why the red ruffed lemur is critically endangered, and captive breeding programmes in zoos.

Principles of homeostasis for blood glucose, and how a glycogen phosphorylase mutation affects glucagon signalling.