Types of Nitrogenous Waste Nitrogenous waste?comes from the?breakdown of excess dietary amino acids?and?nucleic acids The waste is first converted into?ammonia; some organisms excrete it in this fo...
ADH Living organisms can maintain a?safe balance of water and solutes?in their bodies by?osmoregulation Osmoregulation?is an example of homeostasis The kidneys play an important role in osmoregulat...
Conserving Water & the Loop of Henlé Animals that live in dry environments such as deserts depend on their ability to?conserve water?for survival Such animals often have?very long loops of Henl...
Ultrastructure of the Glomerulus and Bowman's Capsule Introduction to kidney structure Humans have?two kidneys, which remove waste products from the blood and maintain the blood's balance of water ...
Organisms & Osmolarity in the Environment Living organisms need to maintain a?safe balance of water and?solutes?in their cells Failure to maintain this balance will mean that an organism's cell...
Analysing Muscle Contractions in Electron Micrographs Many biological structures are?too small to be seen by the naked eye Optical microscopes?are an invaluable tool for scientists as they allow fo...
Annotating the Human Elbow The human elbow is an?articulated synovial joint?which means that it is a?junction where two moving bones meet encapsulated in synovial fluid It consists of several compo...
Sliding Filament Model The?thick filaments?within a myofibril are made up of?myosin?molecules These are?fibrous protein?molecules with a?globular head The fibrous part of the myosin molecule?anchor...
Skeletal Muscle Fibres: Structure Muscles in the body that are attached to the skeleton and aid movement are called?skeletal muscles Other muscle types include: Cardiac muscle?which is found in the...
今年，香港中文大學、新加坡國立大學紛紛開放提前批入學申請，預示著2023年申請季正式開始了！對于22fall申請沒有得到滿意結果的同學來講：錯峰申請，春季入學，也許是留學的一個新思路，不必再多等一年！ 新加坡...
Bones & Exoskeletons The effective movement of the human body requires both?muscle?and an?incompressible skeleton Bones and exoskeletons provide?anchorage for muscles?and?act as levers Mammals ...
Analysing Epidemiological Data Epidemiology?is the study of the?distribution and incidence of diseases?in the population and the associated or contributory risk factors It has contributed to our?un...
