Describe whether health is more than simply the absence of a disease complete physical, mental and social being
Category: GCE A-level Biology
Gaseous exchange – HHD
The gaseous exchange system links the circulatory system with the atmosphere – It is adapted to Clean and
Electron Transport Chain
ETC couples electron transfer between an electron donor (such as NADH) and an electron acceptor (such as O2)
Chemiosmosis
Chemiosmosis: The generation of ATP by the movement of H+ across a membrane during cellular respiration. ATP synthase allows
The C4 Pathway
Photorespiration, caused by the oxygenase activity of RuBisCo/ Oxygenase and the ensuring glycolate salvage (C2) pathway, significantly diminishes
Selection
Selection a mechanism in which physically, physiologically, environmentally and generally adapted organisms survive and reproduce organisms best suited
ATP Structure and Synthesis
The need for energy in living organisms Anabolic reactions e.g growth. Active transport of sustains against concentration gradient.
Sickle cell anaemia and cystic fibrosis
Sickle cell anaemia Autosomal Recessive Inheritance Prevalent in Afro-Caribbean populations o More common in malaria-affected areas – malarial
Biological Molecules
Testing for Biological Molecules Benedict’s test for reducing sugars Equal volume of sample being tested, and Benedict’s solution