biology - energy from respiration

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  • Created by: phoebe
  • Created on: 02-05-13 15:33
what is aerobic respiration?
aerobic respiration takes place in the mitochondria and invloves chemical reactions that use oxygenand sugar and then release the energy
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what is the reaction summarized as?
GLUCOSE + OXYGEN = carbon dioxide and water these are watse products ( + energy)
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why do the mitachondria have a big surface area?
due to their inner folded membrane it then provides a large surface for the enzymes involved in aerobic resperation to work on
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what are the mitachondria?
they provide energy for all the functions of your cells and the number of mitachondria in a cell shows how acticve the cell is.
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what are the uses of repiration?
resperation releases energy from the food we eat so that our cells can use it.
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why do living cells need resperation?
they need to carry out the basic functions for life.tey build up large molecules from smaller ones this makes new cell material.
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why do animals need energy from respiration?
energy from respiration is used to make muslces cotract, all muscular activities use energy eg when your heart beats.
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why do mammals and birds nee energy from respiration?
they keep their body at a constant temperature inside the body regardless the temp of the surroundings.
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the effect of exercise on the body- what causes muscle contraction?
muscle tissue are made up of protein fibres they contract when they are supplied with energy from respiration they contain many mitochondria to carry out aerobic respiration
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what do your muscles do?
muscle fibres usally occur in big groups known as muscles which contract and cause movment. they also store glucose as the carbohydrate glycogen?
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what is glucose used for?
the gucose is used in aerobic respiration to provide energy to the muscles.
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responding to exercise?
when you exercise many muscles contract harder and faster this means they need more glucose and oxygen supply. due to all the exercise the muscle produces increased amounts of carbon dioxide
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body responses to exercises include what?
during exercise muscular activity increases so several changes take place in the body, such as an increase in heart rate, in breathing, glycogen stores in the muscle are converted into glucose for cellular respiration.
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what do these do?
they act to increase supply of glucose and oxygento the muscle and remove more carbon dioxide.
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what are the benifits of exercise on the body?
our heart and lungs benfit from regular exercise and they become larger. during exercise the heart rate and breathing rate increases to supply the muscles with what they need and remove the extra waste product.
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what is anerobic respiration?
if muscles work hard for a long time they become fatigued and dont contract efficiently. if they dont get enough oxgen they will respire anerobically. in anaerobic respiration the glucose is not broken down completely. it produces latic acid.
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whats latic acid?
the cause of muscle fatigue is down to the build up of latic acid. its made by anaerobic respiration in the muscle cells, blood flowing through the muscles removes the latic acid.
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Other cards in this set

Card 2

Front

GLUCOSE + OXYGEN = carbon dioxide and water these are watse products ( + energy)

Back

what is the reaction summarized as?

Card 3

Front

due to their inner folded membrane it then provides a large surface for the enzymes involved in aerobic resperation to work on

Back

Preview of the back of card 3

Card 4

Front

they provide energy for all the functions of your cells and the number of mitachondria in a cell shows how acticve the cell is.

Back

Preview of the back of card 4

Card 5

Front

resperation releases energy from the food we eat so that our cells can use it.

Back

Preview of the back of card 5
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