Predicting Inheritance: Test Crosses A test cross can be used to deduce the genotype of an unknown individual that is expressing a dominant phenotype The individual in question is crossed wi...
Dihybrid Crosses Monohybrid crosses look at how the alleles of one gene transfer across generations Dihybrid crosses look at how the alleles of two genes transfer across generations The gene...
Monohybrid Crosses Monohybrid inheritance looks at how the alleles for a single gene are passed on from one generation to the next Known information about the genotypes, phenotypes and the p...
Osmoregulation The control of the water potential of body fluids is known as osmoregulation Osmoregulation is a key part of homeostasis Specialised sensory neurones, known as osmoreceptors, ...
Ultrafiltration The nephron is the functional unit of the kidney – the nephrons are responsible for the formation of urine The process of urine formation in the kidneys occurs in two stages:...
Structure of the Kidney and the Nephron Humans have two kidneys The kidneys are responsible for carrying out two very important functions: As an osmoregulatory organ - they regulate the wate...
Required Practical: Producing a Dilution Series and Calibration Curve An alternative version of Benedict’s solution can be used to carry out a quantitative test on an unknown urine sample to...
The Causes of Diabetes There are over 3 million people suffering from diabetes in the UK Diabetes is a condition in which the homeostatic control of blood glucose has failed or deteriorated ...
The Role of the Liver in the Conversion Between Glycogen & Glucose The liver plays a vital role in the conversion between glycogen and glucose The conversion between these molecules help...
