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23 Jan 2009, 10:19 AM
| #1 (permalink) |
| New Member HSC: 2009 Gender: Male
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18 Oct 2009, 2:07 PM  | A few questions You can hide this advertisement by registering. I have one question to ask. I'm sorry if it has been asked before. I'm also sorry if it is a dumb question but I dont know the answer lol.Explain why the removal of carbon dioxide from living cells is important? Thanks...I might have more questions later  |
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23 Jan 2009, 11:49 AM
| #2 (permalink) |
| Junior Member  HSC: 2009 Gender: Female
Join Date: Aug 2007
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22 Sep 2009, 9:20 AM | Re: A few questions 1. takes up space (dont know if that is significant) 2. More importantly, if it builds up could (i.e. in blood) change the pH, which would inhibit the function of enzymes essential for cellular function I think that the reasons...anyhow thats what im saying |
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23 Jan 2009, 1:21 PM
| #3 (permalink) |
| Faith.  HSC: 2008 Gender: Male
Join Date: Oct 2008
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Today, 9:09 PM | Re: A few questions Carbon dioxide is produced as a result of respiration. When it dissolves it forms carbonic acid. In body fluid, including the blood, the presence of acid lowers the pH. [A first hand investigation should be performed] To maintain a normal pH balance carbon dioxide must be removed quickly. Too much carbon dioxide causes the rate and depth of breathing to increase. Low levels of carbon dioxide lead to a slowing of the rate and depth of breathing.
__________________ Biology & Legal Studies Tutoring http://community.boredofstudies.org/...ies-tutor.html for sample notes and details. |
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11 Mar 2009, 9:27 PM
| #4 (permalink) |
| New Member HSC: 2008 Gender: Female Location: Townsville
Join Date: Nov 2007
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29 Mar 2009, 12:57 AM | Re: A few questions As everyone else has said above, Carbon Dioxide is a waste product is is toxic to your body due to it's combination with water to create HCO3- which causes the blood to become acidic. As you learnt from the earlier dotpoints, change of pH causes the enzymes to slow down or denature in their function, thus killing the organism. Thus, it is necessary to remove carbon dioxide. Carbon dioxide also slows your breathing rate, so it is needed to remove this. As earch haeme group in a redblood cell holds 4 O or 4 CO2 at a time, removal of CO2 is necessary for gas exchange with the intake of oxygen. |
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21 Mar 2009, 12:10 AM
| #6 (permalink) | |
| Faith. HSC: 2008 Gender: Male
Join Date: Oct 2008
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Today, 9:09 PM | Re: A few questions Quote:
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21 Mar 2009, 12:17 AM
| #7 (permalink) |
| Exalted Member  HSC: 2009 Gender: Male
Join Date: Jan 2007
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Today, 8:28 PM | Re: A few questions Additionally, a lowered pH in the blood, changes the shape of the haemoglobin, making it less likely to carry 4 oxygen molecules, inhibiting the blood's full potential of supplying a large amount of oxygen to the cells.
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21 Mar 2009, 7:42 AM
| #8 (permalink) | |
| ♥♥♥♥♥♥♥♥  HSC: 2009 Gender: Female
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Today, 9:09 PM  | Re: A few questions Quote:
__________________ if you dont stand for something, you'll fall for anything ♥ ATAR aim: 80+ | |
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21 Mar 2009, 1:34 PM
| #9 (permalink) |
| Exalted Member  HSC: 2009 Gender: Male Location: Turra
Join Date: Aug 2008
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Today, 8:50 AM | Re: A few questions HMMMMMMMMM a lot of you are saying that carbon dioxide lowers pH of blood this is true however IT DOESNT ANSWER THE QUESTION!!!!! most of the answer will be marked WRONG in an exam (dat wat happened to most kids in my half yearlies we had that EXACT question lol) it want to know why it removed from living cells, not from the body so it more suitable to say that it lower the pH of the CYTOPLASM, by dissolving in it to form carbonic acid, rather than in the blood and also takes up space as a waste product, not allowing for nutrients such as oxygen to move into the cell !!!! |
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17 May 2009, 3:22 PM
| #10 (permalink) |
| New Member HSC: 2010 Gender: Female
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15 Nov 2009, 8:03 PM | Re: A few questions all living things recquire oxygen for respiration as a result of respiration c02 is produced when carbon dioxide dissolves in water it makes carbonic acid this means that if alot of carbon dioxide is produced the body cells and d blood and lymph will become acidic as studied b4 enzymes can only function within a specific range so an increase in carbon dioxide will result in lowering of ph and interfere with thhe enzyme functioning and therefore will affect the overall metabolism of the body. |
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17 May 2009, 3:41 PM
| #11 (permalink) | |
| hihiwhywhy  HSC: 2008 Gender: Female Location: Sydney, for now
Join Date: Jun 2005
Posts: 1,779
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31 Oct 2009, 2:14 AM  | Re: A few questions Quote:
You have to ALWAYS relate it back to its effect on metabolic functioning. Well, you might sometimes get away with it, depends on how many marks the question is worth... Jeff Wong's answer is good, but I would also specify exactly why this build up of carbonic acid and thus lowering of pH must be countered. | |
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