The Control of Blood Glucose If the concentration of glucose in the blood?decreases?below a certain level, cells may not have enough glucose for?respiration?and may not be able to function normally...
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, monitor...
Formation of Urine in the Nephron 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?...
Nephron Structure Each kidney contains?thousands?of?tiny tubes, known as?nephrons The nephron is the?functional unit?of the kidney – the nephrons are responsible for the?formation of urine The loca...
Structure of the Human Kidney Humans have?two?kidneys The kidneys are responsible for carrying out two very important functions: As an?osmoregulatory organ?-?they regulate the water content of the ...
Production of Urea Many?metabolic reactions?within the body produce?waste products The removal of these waste products is known as?excretion Many excretory products are formed in humans, with two i...
Homeostasis In order to?function?properly and?efficiently, organisms have different?control systems?that ensure their?internal conditions?are kept relatively?constant The process of maintaining con...
想留学英国的同学有很多，大家都知道进入英国大学主要有两种方式，A-Level课程和大学预科，但是大家都会有着各种疑惑和纠结，到底该选择哪一种方式呢？ 很多学生并不理解A-Level和英国大学预科课程的不同，将两者...
Investigating the Rate of Photosynthesis: Redox Indicators The?light-dependent reactions?of photosynthesis take place in the thylakoid membrane and involve the?release of high-energy electrons?from...
