bobson Posted May 23, 2011 Report Share Posted May 23, 2011 hi, I will have an exam on wednesday (biology-cell respiration). Do You have, Mahuta, any additional exercises to that topic? I feel not good in the subject and I am worried.. Reply Link to post Share on other sites More sharing options...
Mahuta ♥ Posted May 23, 2011 Author Report Share Posted May 23, 2011 If this is a final exam, I am pretty sure it's going to be from past paper questions. Doing online exercises wont really be that useful for your exam. Just make sure you really really understand cell respiration. Believe me if you got to a point where you understand it, you are ready for the exam. Are there any specific parts you don't understand that I can explain?As for the past questions, here's a page with past questions on respiration: Respiration Reply Link to post Share on other sites More sharing options...
bobson Posted May 24, 2011 Report Share Posted May 24, 2011 I think, I understand.. And I got some exercies from other class that had an exam.. so I think if I read it some times else, I will pass the exam ;D Keep Your fingers crossed for me, Mahuta, thank you so much Reply Link to post Share on other sites More sharing options...
Markee Posted June 4, 2011 Report Share Posted June 4, 2011 (edited) Hello guys! I'm sure some of you know who I am, but anyway...Does any body know the consequence for the lack of lipids in the body?Does any one also have a good knowledge about the Pancreas?, Pancreatic Lipase?, Lipid digestion in other organs of the body/within the digestive system? and any indicators for Fatty Acids & Glycerol? Edited June 4, 2011 by Ma2K Reply Link to post Share on other sites More sharing options...
Mahuta ♥ Posted June 4, 2011 Author Report Share Posted June 4, 2011 lol of course we do, haha I told you give me one day. Anyways, tell me what you need to know about the pancreas, it's enzyme or anything of that sort in the digestive system. I just sat an exam on it today. Reply Link to post Share on other sites More sharing options...
Markee Posted June 4, 2011 Report Share Posted June 4, 2011 LOOL! As expected, you come right on cue my lady ;)I wish we were related or someting Hmm... Let's see, (types very slowly 'coz left fingers just had rigorous guitar playing) ... So, how can Pancreatic Disease affect the production of Lipase?, What happens if the body has a lack of lipids? Reply Link to post Share on other sites More sharing options...
Mahuta ♥ Posted June 4, 2011 Author Report Share Posted June 4, 2011 Lol, yeah well you know I am always online.Noway Mark! This is your exact EE question (sort of). If I answer that question, then the whole research is done for you!You have to ask specific questions that will help you answer that big question. Reply Link to post Share on other sites More sharing options...
Markee Posted June 4, 2011 Report Share Posted June 4, 2011 Erm, not most of the time apparently Daaww B-but, I have been doing this thing for nearly 2 hours now and Google is just giving me useless links But a book I have does make some sense, but doesn't tell me how lack of lipids will actually do with the body? Those are specific Maha . Reply Link to post Share on other sites More sharing options...
Mahuta ♥ Posted June 4, 2011 Author Report Share Posted June 4, 2011 Well for starters, search the importance of lipids in our body. Here's one, you need lipids for synthesis of certain hormons, you will do this next year in bio. Steroid muscles are very important and you need lipids in your body to make them. Also, a lot of tissues in the body that cover important organs have lipids in them, which protects them from shocks (talking about organs like the heart).Lack of lipids will affect the body, but depends on how much you're lacking. If you dont have pancreatic lipase at all, then most of the lipids will not be digested. Don't say all, because you do have other enzymes that break down certain types. 1 Reply Link to post Share on other sites More sharing options...
Markee Posted June 4, 2011 Report Share Posted June 4, 2011 I seriously wish we are related Maha XP That's a pretty good starter You should give me more of this often Now I have an exact idea now Maha, could I talk about the importance of lipids in terms of diet? Would that suffice? =/ Reply Link to post Share on other sites More sharing options...
Mahuta ♥ Posted June 4, 2011 Author Report Share Posted June 4, 2011 Well you're investigating about the effect of pancreatectomy on the body no? So you have to consider the effect of lack of lipids everywhere. What do you mean in terms of diet only? Oh and no problemo. Reply Link to post Share on other sites More sharing options...
Markee Posted June 5, 2011 Report Share Posted June 5, 2011 Well, I saw a site which talks about the importance of lipids, but it is in terms of diet. Reply Link to post Share on other sites More sharing options...
Ilkana Posted June 10, 2011 Report Share Posted June 10, 2011 Hello, I have a question about 'formation of chiasmata' from Topic 10, Genetics (HL). 10.1.2 says "Outline the formation of chiasmata in the process of crossing over." The IB Biology study guide has a whole box describing the actual process of the formation, including 'synapsis' and things like the DNA molecules getting 'cut'. My teacher did not provide any such details about this. In my notes that I was given, there is simply 'When the chromosomes touch [during prophase I] a chiasmata forms and the two sections of chromosome swap places.' I think I'll need to know more than simply that, right? Thankyou! Reply Link to post Share on other sites More sharing options...
Ilkana Posted June 10, 2011 Report Share Posted June 10, 2011 Also, one other question - If two genes are linked, does this refer to the fact that the loci of the alleles of the gene are on the same chromosome? So, if two genes are not linked, crossing over cannot possible occur between them? Thankyou Reply Link to post Share on other sites More sharing options...
Rigel Posted June 10, 2011 Report Share Posted June 10, 2011 Hello, I have a question about 'formation of chiasmata' from Topic 10, Genetics (HL). 10.1.2 says "Outline the formation of chiasmata in the process of crossing over." The IB Biology study guide has a whole box describing the actual process of the formation, including 'synapsis' and things like the DNA molecules getting 'cut'. My teacher did not provide any such details about this. In my notes that I was given, there is simply 'When the chromosomes touch [during prophase I] a chiasmata forms and the two sections of chromosome swap places.' I think I'll need to know more than simply that, right? Thankyou! You should expand that area a little bit, and what it is related to that. Only thing i can help you in, sorry. Reply Link to post Share on other sites More sharing options...
Proletariat Posted June 10, 2011 Report Share Posted June 10, 2011 (edited) It seems to me that your current notes would be sufficient. We only mentioned chiasmata in brief in my class, and that was simply explained as the point where the two pairs touch for crossing over to take place. The May 2011 exam didn't require any knowledge beyond this.And yes, linked genes are genes that are located on the same chromosome. It's more a concept with heredity and inheritance, and crossing over comes into play because the greater the distance between two linked genes, the greater the chance for the two genes to be separated during crossing over. If you have a 30 cm ruler, and you arbitrarily snap it into two pieces, it's much more likely for the "2cm" mark and the "20cm" mark to end up on different pieces than it is for the "2cm" mark and the "5cm" mark. Using this concept, it is possible to produce gene maps of chromosomes by calculating the recombination rates, although I don't believe gene mapping is part of the IB curriculum. Edited June 10, 2011 by Proletariat Reply Link to post Share on other sites More sharing options...
Markee Posted June 13, 2011 Report Share Posted June 13, 2011 How much ENZYME is needed in an AVERAGE PERSON's diet to break down an average amount of calories? (which is between 20 to 30 percent) Reply Link to post Share on other sites More sharing options...
Mahuta ♥ Posted June 13, 2011 Author Report Share Posted June 13, 2011 There's no such thing as X amount of enzyme! At least I believe it's very difficult to measure, it depends on how much the body secretes. Someone correct me if I am wrong. Reply Link to post Share on other sites More sharing options...
Drake Glau Posted June 14, 2011 Report Share Posted June 14, 2011 Well, the calorie is a measurement of energy (heat) so I don't know how it is broken down. Enzymes are also super specific (as you learned, it's an objective, their specificity) on what they affect. So I don't understand your question because it's asking "How much general enzyme (contradiction?) is needed to break down energy (laws of physics don't allow this O.o)?", sorry Reply Link to post Share on other sites More sharing options...
Markee Posted June 19, 2011 Report Share Posted June 19, 2011 Does anyone know any other places in the body where Lipid Digestion occurs? Reply Link to post Share on other sites More sharing options...
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