7604086
Description
Flashcards by raed umair, updated more than 1 year ago
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Created by raed umair
almost 8 years ago
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| Question | Answer |
| 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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