Neurones - Study guides, Class notes & Summaries

What is homeostasis? - answer The maintenance of a constant internal environment. What is a stimulus? - answer A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - answer Detect the stimulus or change in environment. What happens after the receptors? - answer Receptors send messages to the CNS via the sensory neurone. What makes up the central nervous system? - answer The brain or spinal cord ...

AQA GCSE Biology topic 5 - Homeostasis and Response Homeostasis maintaining a stable environment e.g. nervous and hormonal communications, body temp, blood glucose levels. negative feedback A process that counteracts a change - increasing and decreasing levels to maintain homeostasis, e.g. sweating to lower the body temp the nervous system A system that manages the body through negative feedback, hormones and effectors made up of Central nervous system (CNS - brain + spinal cord), se...

What is a kinetic response? Non directional random movement in response to a stimulus What is a positive and negative taxis? Positive taxis- organism moves towards stimulus Negative taxis - organism moves away from stimulus What Are receptors? Detect stimuli- can be cells or proteins on cell surface membrane , loads of different types What are effectors? Cells that bring about a response to a stimulus to provide an effect ( muscle cells, glands) Receptors communicate with effectors via...

What is a stimulus? - correct answer A change in the environment to which an organism responds to. What is a response? - correct answer A change in behaviour in response to a stimulus. What is the central nervous system (CNS) made of? - correct answer The brain and the spinal cord. What makes up the nervous system? - correct answer ...

AQA A LEVEL RESPIRATION EXAM QUESTIONS WITH ANSWERS VERIFIED. Suggest the advantages of the change in blood flow in blood vessels during exercise. [3 marks] -more blood flow to muscles during exercise -supplying more glucose and oxygen/ removing carbon dioxide/ lactic acid/ heat -for high rate of respiration/ to meet increased demand for energy Explain how microorganisms contributed to the increase in temperature during processing of organic waste. [2 marks] respiration produces heat ex...

AQA GCSE Biology Paper 2 Questions and Answers 100% Pass What is homeostasis? - Answer️️ -The maintenance of a constant internal environment. What is a stimulus? - Answer️️ -A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - Answer️️ -Detect the stimulus or change in environment. What happens after the receptors? - Answer️️ -Receptors send messages to the CNS via the sensory ...

acquired characteristic ֎ -:- A characteristic that is changed by the environment. adaptation ֎ -:- How organisms change in order to be more suited to their environment. addiction ֎ -:- When someone is dependent on a drug and can't do without it. allele ֎ -:- Alternative forms of the same gene. For each gene we have one allele from each parent in our cells. amphibians ֎ -:- Vertebrates that have moist, permeable skin and lay jelly-coated eggs. Animalia E x c e l l e n c e i s ...

negative tropisms - Answer-growth away from a stimulus Define homeostasis - Answer-Homeostasis is the regulation of internal conditions in the body. It is necessary to maintain optimal conditions for body functioning. These internal conditions can change as a result of processes within the body and as external conditions change. systems responsible for homeostasis - Answer-the nervous system - uses electrical impulses to communicate the endocrine system - uses chemical molecules to commun...

What is homeostasis? - correct answer The maintenance of a constant internal environment. What is a stimulus? - correct answer A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? - correct answer Detect the stimulus or change in environment. What happens ...

What is homeostasis? correct answers The maintenance of a constant internal environment. What is a stimulus? correct answers A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? correct answers Detect the stimulus or change in environment. What happens after the receptors? correct answers Receptors send messages to the CNS via the sensory neurone. What makes up the central nervous system? co...