Flashcards
B1 Topic 2 Edexcel
Flashcards do conjunto (25)
- 1If a tropism is positive, what does this mean?It grows towards the stimulus
- 2What is geotropism?A growth response to gravity
- 3Name a plant hormoneAuxin or Gibberellin
- 4What effect does light have on auxin?It decomposes it (breaks it down)
- 5What is phototropism?A growth response to light
- 6Where is insulin produced?Pancreas
- 7What causes type 2 diabetes? Give two ways type 2 diabetes can be controlled.A person being resistant to insulin. Controlled diet and injecting insulin
- 8What causes type 1 diabetes? How can it be controlled?A lack of insulin. Controlled diet and injecting insulin.
- 9What hormone acts in the opposite way to insulin?Glucagon
- 10Where is excess glucose stored?The liver and muscles
- 11What is excess glucose stored as?Glycogen
- 12What hormone reduces blood sugar levels?Insulin
- 13How are hormones transported around the body?the bloodstream
- 14What is the name given to the quick response that protects us from harm?Reflex
- 15What is the Myelin Sheath made of and what is its role?Fat to insulate the axon
- 16Define a synapse and state the generic name for the chemical that crosses it?The gap between two neurones. Neurotransmitters
- 17What is the function of a dendrite?to connect neurones
- 18What part of the neurone transmits information to different neurones, muscles and glands?Axon
- 19What are the cells in your eye that detect light?Light sensitive cells in the retina
- 20What makes up the Central Nervous System?The brain and Spinal Chord
- 21What does Negative Feedback mean?When a change in one direction is detected a mechanisms reverses the change
- 22Explain why we look red when we are hot?Vasodilation occurs allowing more blood to flow near the skins surface, increasing heat energy loss
- 23What method of heat energy transfer does sweating utilise to cool us down?Evaporation
- 24Which part of the brain controls body temperature?Hypothalamus
- 25Define HomeostasisThe maintenance of a stable internal enviroment
Informações
- Descrição
- How confident are you at Biology? ~ TEST YOUR KNOWLEDGE
- Criado por
- Princess Terin · abr 2016
- Atualizado
- 10 jan 2017
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