Homeostasis and Excretion notes
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This page gathers Homeostasis and Excretion notes on topics from blood glucose to the kidneys. School students can use them to revise these topics, while teachers can find material for lessons. There are over 60 notes by more than 50 GoConqr users, mostly at secondary level. Pick a note to begin.
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- Feedback Mechanisms52
- Coordination and Cell Signalling95
- Thermoregulation138
- Blood Glucose Regulation and Diabetes116
- Control of Breathing6
- Excretory and Urinary Systems124
- Liver Function and Excretion19
- Kidney Structure and Function185
- Urine Formation23
- Osmoregulation and Water Balance75
- Kidney Disease and Dialysis34
Notes
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3. Plants and animals regulate the concentration of gases, water and waste products of metabolism in Explain why the concentration of water in cells should be maintained within a narrow range for optimal functionWhy water is important -75% of cells are made from water1. Water is the solvent for all metabolic rea...
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Homeostasis HomeostasisHomeostasis is the balancing of body functions to maintain constant internal environmentThe body needs to be kept in a steady condition so that the cells in the body can perform correctly and efficiently. T...
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Chapter 15: Homeostasis 15.1 The principles of homeostasis Homeostasis is the process of keeping a constant internal environment. It is important for the body to have a stable environment so that cells can function properly. In ord...
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Chapter 17: Energy for biological processes 17.1 Energy cycles 15.2 Thermoregulation in ectotherms
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Control of Blood Glucose Concentration Eating and Exercise Change the Concentration of Glucose in your Blood All cells need a constant energy supply to work - so blood glucose concentration must be carefully controlled. The concentration of glucose in the ...
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Blood Glucose Regulation Blood Glucose · Glucose C6H12O6 o Glucose: 6C monosaccharide- type of carbohydrate o Destination: cell cytoplasm and mitochondria o Glucose converted (pyruvic acid which enter the mitochondria then) to ATP to release ...
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Controlling Blood Water Potential The Kidneys Regulate the Water Potential of the Blood Water is essential to keep the body functioning, so the amount of water in the blood (and so the water potential of the blood) needs to be kept constant. Mammals e...
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Osmoreglation Regulation of the water potential of the bloodWater potential depends on the concentration of solutes (i.e glucose, mineral ions etc.)Body response to a fall in water potentialChange Fall in water potentialReceptor Os...
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Homeostasis The principles of homeostasisReceptors and effectorsIts impossible to maintain a living mammal in a completely stable state because everything causes minute changes, instead the body maintains a dynamic equilibrium wi...
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BIOLOGY - MAINTAINING A BALANCE MAINTIANING A BALANCE QUESTIONS 1. Describe a current theory that plains the movement of materials through xylem xylem is not alive therefor physical processes are responsible for the upward mo...
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Chapter 1: Communication Homeostatis:Maintenance of a stable internal environment Factors: -Amount of water (Osmosis)-Glucose (Affects respiration)-Temperature (Metabolism and denature) Amount of water:Low temperature slo...
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The liver and the kidneys Histology of the liver Oxygenated blood from the heart. blood travels from the aorta via the hepatic artery into the liver. This supplies the oxygen that is essential for aerobic respiration. The liver cells are activ...
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Homeostasis and Response Homeostasis Conditions inside the body need to be steady Cells need to be at the right conditions to function Homeostasis - regulation of conditions inside body (and cells) to maintain stable internal environmen...
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Untitled_2 Keywords for B4 21st Century Science OCR Homeostasis Keeping a steady state inside your body Receptor The part of the control system that detects changes in the system and passes this information to the process...
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Thermoregulation Tolerance Ranges • The best range of conditions for an organism to live in is called its optimal range. • However, as not all animals can live in their optimal range, they can sustain life within a range of conditions...
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Communication, Homeostasis and Energy
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Maintaining a Balance - created from Mind Map 1.Most organisms are active in a limited temperature range Plants and animals transport dissolved nutrients and gases in a fluid medium Plants and animals regulate the concentration of gases, water and waste products ...
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Homeostasis Basics Homeostasis is the Maintenance of a Stable Internal Environment Changes in your external environment can affect your internal environment - the blood and tissue fluid that surrounds your cells. Homeostasis involves co...
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CHAPTER 8 NOTES MAINTAINING A BALANCE:HOMEOSTASIS - the maintenance of a relatively stable internal environmentMechanisms used in complex organism are called homeostatic mechanisms - this includes mostly the nervous and hormone syste...
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B10- Human Nervous System B10.1 B10.1- The Principles of Homeostasis Homeostasis in Action Internal environment: the conditions inside your body Homeostasis: the regulation of internal conditions of cells to maintain optimum conditions f...
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Thermoregulation Thermoregulation · Body temperature: 37˚ optimum internal temperature o TOO HOT – cells at risk of denature o TOO COLD – cells too slow to metabolize enough for survival · Temperature receptors monitor temperature and...
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maintaing a balance Enzymes- Role of enzymes Enzymes are organic catalysts. Catalyst is a substance that speeds up or brings about a chemical change without itself being used up in a reaction. As well as speeds up reactions, enzymes enab...
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The Kidneys The Kidneys Excrete Waste and Regulate Blood Water Potential One of the main functions of the kidneys is to excrete waste products, such as urea. The kidneys also regulate the water potential of the blood. As the bloo...
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Homeostasis Responding to Change • In order to survive, and organism must be able to adapt to its environment, whether to an internal or external condition • Homeostasis is the ability for an organisms body to adapt or change to ...
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The kidneys - Excretion The Kidneys.The kidney's are part of the urinary system and provide 3 main functions.1) Removal of Urea from the blood. Urea is produced in the liver from excess amino acids.2) Adjustment of salt levels in the b...
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Communication Systems Conditions that cells require to work properly: temperature pH humidity water concentration (of enzyme/substrate) cofactors and prosthetic groups inhibitors aqueous environment - keeps the substrate and products in so...
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Homeostasis Homeostasis is maintaining a constant internal environment. Conditions in the body need to be kept steady so cells will function properly. This involves balancing input with outputs.• Levels of co2 - respiration const...
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Unit 5: Section 2 3.5.4 Homeostasis is the maintenance of a constant internal environment. Principles Homeostasis in mammals involves physiological control systems that maintain the internal environment within restricted limits. T...
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Untitled EXCRETION Process of removing waste products from the body If waste is not removed, toxic substances build up and these damage organs in the body. Excretory organs Skin Lungs Kidney SKINExcretory products:waterm...
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Homeostasis - created from Mind Map Water Content - (Osmoregulation) Temperature Blood sugar concentration
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Homeostasis and Excretion HOMEOSTASIS:Maintenance of a constant and stable internal environment THE URINARY SYSTEM: Two kidneys at back of abdominal cavity Excrete waste nitrogen as urea Eliminate excess salts Osmoregulate to maintain water co...
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Hormones and homeostasis Homeostasis and hormones test 1. What happens to the body during homeostasis? 2. What does a negative feedback system involve and what is the result of this?3. What does peripheral vasodilation involve?4. What are eff...
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B10 B10.1 Homeostasis is the maintenance of a constant internal environment. Organs cannot work if conditions in the internal environment keep changing. Important to respond to changes in the internal or external en...
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Homeostasis HomeostasisHomeostasis is the maintenance of constant internal environment.-There are 4 main things that need to be controlled; body temperature, water content, ion content and blood sugar level. Body Temperature-Enzy...
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The liver - created from Mind Map Detoxification of alcohol Blood supply Functions
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Untitled homeostasis the body's mechanism of keeping the body's internal conditions at a set level in response to internal and external changes. 3 conditions hat need to be controlled in the human body . body temperature&...
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Excretion Notes BIOLOGY:EXCRETIONSecretion: the release of useful substances formed in the cells of the body (ie. enzymes like salivary amylase in saliva and hormones like adrenaline)Defaecation/Egestion: the elimination of undigeste...
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Excretion Excretion test 1. Hormones messages differ from nerve messages in that hormones...2. Our body filters urea from blood in the ?3. Fish excrete...4. Dialysis fluid does not contain...5. Name the light pink part, the dar...
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Surviving the Cold: Learning Outcomes Learning outcomes Define the terms cold tolerance and cold adaptation and explain the physiological differences between them. Compare some of the thermoregulation strategies adopted by different organisms. Outline how...
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Kidney's Things are filtered via Nephrons Ultrafiltration- - A high pressure is built up- This squeezes water, urea, ions, and sugar out of the blood- This goes into the Bowman's capsule- Big molecules such as ...
More Homeostasis and Excretion resources
About homeostasis and excretion notes
GoConqr OriginalUsing Homeostasis and Excretion notes
The notes cover several aspects of the unit. Blood Glucose Regulation and Control of Blood Glucose Concentration focus on glucose, while Controlling Blood Water Potential looks at water balance and the kidneys. Other notes cover thermoregulation, excretion and the liver.
Where to start and what to do next
For an overview, start with the Homeostasis note that introduces receptors and effectors. Then choose a more focused note, such as Controlling Blood Water Potential, to study one part of the unit in more detail.
After reading, cover the note and write down its main points in your own words. Check what you remembered against the original, then revisit any sections you missed. If you want short recall prompts, switch to flashcards on the unit page; when you are ready to check your understanding, try a quiz. Choose a note and work through it at your own pace.
Frequently asked questions
Which note is a useful place to start?
The Homeostasis note that introduces receptors and effectors is a useful starting point because it sets out the principles of homeostasis. For a narrower topic, Blood Glucose Regulation focuses on glucose, while Controlling Blood Water Potential looks at water balance and the kidneys.
Are these notes free to use?
Yes. Every note listed here is free to open and study without an account. The resources were made by GoConqr users. A free account also lets you save quiz scores and make your own notes, quizzes, mind maps and flashcards.
Who are these notes for?
The notes are mostly at secondary level. School students can use them to revise topics such as blood glucose and excretion, and teachers can look for material on the same topics. The listed resources mention courses including GCSE Biology, IGCSE Biology and A-level Biology.