By Martin Rowland, Steve Potter
Excellent for revision, those publications clarify the unit requisites, summarise the content material and contain specimen questions with graded answers.
Martin Rowland has taught and tested A-level Biology for over 30 years and is at present a Chair of Examiners in Biology. he's co-author of the winning titles AQA Biology for AS and AQA Biology for A2, released by way of Hodder schooling.
Read or Download AQA AS Biology Student Unit Guide : Unit 1 Biology and Disease PDF
Best diseases books
It is a 3-in-1 reference booklet. It provides an entire clinical dictionary protecting countless numbers of phrases and expressions with regards to gynecomastia. It additionally supplies large lists of bibliographic citations. ultimately, it presents info to clients on tips to replace their wisdom utilizing numerous net assets.
Imaging of Perianal Inflammatory Diseases
This sensible quantity is meant for all radiologists, gastroenterologists, and surgeons who're answerable for, or attracted to, the prognosis and care of sufferers with ailments of the anal and perianal quarter. After an introductory part targeting surgical, MRI, and US anatomy, up to date medical and healing info is equipped at the complete diversity of perianal inflammatory stipulations, with precise realization to Crohn’s affliction, ulcerative colitis, and sexually transmitted ailments.
Diseases of the Brain, Head and Neck, Spine: Diagnostic Imaging and Interventional Techniques
The foreign Diagnostic path in Davos (IDKD) bargains a special studying adventure for imaging experts in education in addition to for skilled radi ologists and clinicians wishing to be up to date at the present cutting-edge and the newest advancements within the fields of imaging and image-guided interventions.
Cell Adhesion Molecules: Implications in Neurological Diseases
Phone Adhesion Molecules: Implications in Neurological illnesses comprises assessment articles on fresh advancements within the box of neural mobile adhesion molecules (CAMs). the main target is at the position of mobilephone adhesion molecules in numerous neurological and neurodegenerative illnesses. this angle has been primarily ignored in lately released books on neural CAMs.
- Coffee: Emerging Health Effects and Disease Prevention (Institute of Food Technologists Series)
- Risky Trade: Infectious Disease in the Era of Global Trade
- Evidence-Based Medical Consultation, 1e
- Pain Medicine and Management
- Chemotherapy of Fungal Diseases
- Diseases in the Homosexual Male
Extra resources for AQA AS Biology Student Unit Guide : Unit 1 Biology and Disease
Example text
The Golgi apparatus modifies proteins (for example by adding carbohydrates to them to make glycoproteins) that are synthesised by the ribosomes and transported by the rough ER. It releases vesicles (sacs) containing the modified proteins. ●● The plasma membrane controls what enters and leaves the cell. ●● Microvilli are finger-like folds of the plasma membrane that increase the surface area available for absorption of molecules. Absorption from the small intestine: why plasma membranes are a barrier Key concepts you must understand Figure 30 shows that in order to pass from the lumen of the gut into the bloodstream, digested molecules pass through two plasma membranes of an epithelial cell.
Moves in. ●● Exhaling creates a higher pressure in the lungs than in the atmosphere and so air moves out. The amount of air we inhale in one minute is the pulmonary ventilation rate. It Knowledge check 20 depends on: If you know the pulmonary ventilation rate and the breathing rate, how would you find the tidal volume? e. breathing rate) pulmonary ventilation rate = tidal volume × ventilation rate Gas exchange in the alveoli Concentration gradients allow oxygen to diffuse from the air in the alveoli into the red blood cells and carbon dioxide to diffuse from the blood plasma into the alveoli.
There is a response to foreign antigens on the surface of our own cells that are infected by viruses or are cancerous. This is the cell-mediated response, brought about by T lymphocytes (T cells). The humoral response and the cell-mediated response both depend on an initial recognition process by white blood cells called macrophages. The initial immune response to a foreign antigen is called a primary immune response. It destroys the microorganisms or toxins and creates memory cells. These cells have an immunological memory and ‘recognise’ the same antigen if it enters the body again.