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Frage | Antworten |
question 1 what does you body produce when it is under stress or fear | your body produces noradrenalin |
question 2 how does noradrenalin affect the heart | -it increases/decreases the rate at which it beats -strength of the contraction |
question 3 by how much can noradrenalin speed up the heart rate | it can speed it up by five times the normal rate |
question 4 how does vigorous exercise affect the heart rate | -it speeds up the heart rate -it affects the strength of contraction |
question 5 what are receptors | specialized cells that detect changes in stimuli |
question 6 what happens when you stop exercising vigorously | your heart rate decreases |
question 7 what is your body made up of | your body is made up of cells,tissue,fat,muscles and organs |
question 8 what is mitochondria | the organelles in which cellular respiration occurs |
question 9 what is the reaction for cell respiration | glucose+oxygen+water+energy |
question 10 what do ribosomes do | they produce proteins in a cell |
question 11 what do lysosomes do | they create wastes in your body |
question 12 what is the largest internal organ | the liver |
question 13 what does the liver do | -it breaks down hormones -breaks down haemoglobin -breaks down toxic substances -converts ammonia to urea |
question 14 what does interdependent mean | something that relies on another thing to work wth |
question 15 what is metabolism | the chemical process that maintains organisims |
question 16 what are enzymes | special proteins in your body that can speed up a reaction |
question 17 how many enzymes are their in a humans body | over 700 |
question 18 what is a catabolic reaction | a larger molecule that has been splitted onto smaller ones |
question 20 what is difusion | movement of particles in a substance |
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