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...
想留學英國的同學有很多，大家都知道進入英國大學主要有兩種方式，A-Level課程和大學預科，但是大家都會有著各種疑惑和糾結，到底該選擇哪一種方式呢？ 很多學生并不理解A-Level和英國大學預科課程的不同，將兩者...
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...
Limiting Factors of Photosynthesis Plants need several factors for?photosynthesis?to occur: the presence of?photosynthetic pigments a supply of?carbon dioxide a supply of?water light?energy a?suita...
Stages of the Calvin Cycle Energy from?ATP?and?hydrogen from reduced NADP?are passed from the light-dependent stage to the light-independent stage of photosynthesis The energy and hydrogen are used...
Types of Photophosphorylation The?thylakoid membrane?is the site of the?light-dependent stage?of photosynthesis During the?light-dependent?stage of photosynthesis: Light energy is used to breakdown...
