cheungcheung Posted May 21, 2004 Share Posted May 21, 2004 Is chloroplast considered as cell? Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 21, 2004 Share Posted May 21, 2004 Is chloroplast considered as cell? no, it's an organelle Link to comment Share on other sites More sharing options...
YT2095 Posted May 21, 2004 Share Posted May 21, 2004 it`s Part of a plant cell yes, but they are not cells themselves and you don`t have to call any of us "Sir" Link to comment Share on other sites More sharing options...
cheungcheung Posted May 21, 2004 Author Share Posted May 21, 2004 it`s Part of a plant cell yes' date=' but they are not cells themselves and you don`t have to call any of us "Sir" [/quote'] Hi YT, how about the liver? Some books said it consists of cells. ----------------difficult... Link to comment Share on other sites More sharing options...
YT2095 Posted May 21, 2004 Share Posted May 21, 2004 Hi Dude animal biology isn`t really my area of knowledge, I have basic High school education in Bio, but if I remember correctly the liver is made of many cells, but is different to regular animal cells in that it`s missing something that the others have, but I can`t remember what I`m sure the others will know though Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 21, 2004 Share Posted May 21, 2004 http://ilil.essortment.com/liverscellsstr_ricl.htm Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 You remembered correcly YT! Plant Cells have: -Nucleus -Cell membrane -Vacuole -Cell wall -Chloroplasts Animal cells have: -Nucleus -Cell membrane The vacuole, cell wall and the chloroplasts are the only parts that the animal cell doesn't have! I have obviously left out other smaller parts like the mitochondrion as both cells have them. I have only written about the main parts Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 21, 2004 Share Posted May 21, 2004 You remembered correcly YT! Plant Cells have: -Nucleus -Cell membrane -Vacuole -Cell wall -Chloroplasts Animal cells have: -Nucleus -Cell membrane The vacuole' date=' cell wall and the chloroplasts are the only parts that the animal cell doesn't have! I have obviously left out other smaller parts like the mitochondrion as both cells have them. I have only written about the main parts [/quote'] and here i was banging my head against the wall trying to figure out what is it that the liver cell don't have should have thought/remembered that this thread from the get-go was about plant cells which then moved on to animal cells. Doh!!! and actually, animal cells do have vacuoles Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 Do they? I don't think so, because the vaculoe controls the amount of water in the cell of plants. Turgidity means that the plant cells are stiff, and this is caused by the vacuole pushing against the cell wall! Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 21, 2004 Share Posted May 21, 2004 yeah, but vacuols also help with the intracellar digestion if i recall corectly it's just in animal cells they are not as big and can easily be overlooked Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 oh, didn't know that! Now I can impress by biology teacher! Link to comment Share on other sites More sharing options...
felinlasv Posted May 21, 2004 Share Posted May 21, 2004 Yes, animals do have vacuoles but way smaller than plants cells because animalcells don't need to be so stiff (waterpressure from the vacuole against the cellwall). Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 Then what is the animal cell's vacuole used for? Link to comment Share on other sites More sharing options...
YT2095 Posted May 21, 2004 Share Posted May 21, 2004 ya know, for the life of me I still can`t remember what it was about either red blood cells or maybe it was liver cells (or both) that differ from ordinary animal cells??? it`s driving me nuts and I can`t find my notes Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 Its the red blood cells YT. They have nothing in them. No nucleus at all. This is to make space for the haemoglobin so that they can carry oxygen better. The negative thing is that they can only live for about a month before dying because they have no nucleus to maintain them! Link to comment Share on other sites More sharing options...
YT2095 Posted May 21, 2004 Share Posted May 21, 2004 AHA! Thank you! ) btw, to the original poster, this maybe of some help to you http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/AnimalCells.html Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 Ur welcome YT, glad to be of any help! Link to comment Share on other sites More sharing options...
felinlasv Posted May 21, 2004 Share Posted May 21, 2004 If I'm not mistaking the animal vacuoles are somewhat used like a waterreserve or to deposit and store several chemicals produced by the cells metabolism Link to comment Share on other sites More sharing options...
aommaster Posted May 21, 2004 Share Posted May 21, 2004 Hmm.... that looks like the only thing it can be used for Link to comment Share on other sites More sharing options...
aommaster Posted May 22, 2004 Share Posted May 22, 2004 Yes, animals do have vacuoles but way smaller than plants cells because animalcells don't need to be so stiff (waterpressure from the vacuole against the cellwall). You have just amde a gigantic mistake I talked to the biology teacher. He says that animal cells do NOT have vacuoles. What you were talking about are vesicles! Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 23, 2004 Share Posted May 23, 2004 You have just amde a gigantic mistake I talked to the biology teacher. He says that animal cells do NOT have vacuoles. What you were talking about are vesicles! well, we're on the internet, so let me look it up to make sure: http://sun.menloschool.org/~cweaver/cells/c/vacuole/ A vacuole is membrane bound sac found in plant and animal cells that is used for storage. It also plays a role in intracellular digestion and release of cell waste. It has a variety of functions ranging from protection of a plant to endocytosis. Each plant cell also has a central vacuole, which is formed by the coalescence of smaller vacuoles. The vacuole is very important to the cell. http://www.botany.uwc.ac.za/SCI_ED/grade10/cells/vacuoles.htm Vacuoles are seldom prominent features in animal cells and are normally confined to simple animal forms where they are observed as small contractile vacuoles. http://www.georgetown.txed.net/faculty/forbes/SheffieldCells/Period%208/animalcellsarahkensleybrandon.htm (surely, you can find hundreds or thousands other websites that say the same thing) Link to comment Share on other sites More sharing options...
aommaster Posted May 23, 2004 Share Posted May 23, 2004 Yeah, looks correct to me! I actaully beleived that there were vacuoles in the first place when you told me so. But, when I told him about it, he said no. They were called Vesicles. What could have led him to say that? Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 23, 2004 Share Posted May 23, 2004 Yeah, looks correct to me! I actaully beleived that there were vacuoles in the first place when you told me so. But, when I told him about it, he said no. They were called Vesicles. What could have led him to say that? that's negotiable and a thing of perspective/preference. some choose to call them vesicles, others call them vacuoles Link to comment Share on other sites More sharing options...
aommaster Posted May 23, 2004 Share Posted May 23, 2004 well actually according to this site: http://www.enchantedlearning.com/subjects/animals/cell/ it has both of them. A vacuole is under a vacuole topic and a vesicle is under the golgi body topic. have a look! Link to comment Share on other sites More sharing options...
admiral_ju00 Posted May 23, 2004 Share Posted May 23, 2004 well actually according to this site:http://www.enchantedlearning.com/subjects/animals/cell/ it has both of them. A vacuole is under a vacuole topic and a vesicle is under the golgi body topic. have a look! just remember, if the teacher is not an active in his/her field and aquiring new information, then his/her worth is only as good as the book that they teach from. Link to comment Share on other sites More sharing options...
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