ATAR Notes: Forum
VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: monokekie on March 09, 2010, 09:55:43 pm
-
this questions confused me badly, could someone help?
If the lysosomes in a cell suddenly ruptured, why would macromolecules in cytosols break down?
thanks..
-
Lysosomes have special enzymes inside that break up and digest what ever they intake or 'eat'.
If a lysosome was to suddenly rupture (break open) it would spill its contents all throughout the cell.
So, the special enzymes inside the lysosomes would be floating around the cell breaking up things.
Hope i helped,
~kingpomba.
(not sure its the answer but i reckon it is)
-
thank you Kimpomba! :)
so.. also.. another question, what color are lysosomes?
-
Dont know that one sorry man
-
dark yellow or something ?
not sure
-
dark yellow or something ?
not sure
that was my guess haha!
well explained kp....helpfull for all :)
-
yeah .. i think they are trasparent ..
-
i see :) thanks so much people :):)
-
also..
through how many membranes would a molecule have to pass in moving from the interior-stroma-of a chloroplast to the interior - matrix- of a mitochondrion?
-
yep lysosomes contain lots of enzymes which break down proteins etc.. it contains proteases which hydrolyse the peptide bonds and lysozymes, phospholipases, ribonucleases, deoxyribonucleases... yeah so just various forms of hydrolases...and some lysosomes also contain reactive oxygen species, superoxides..hydrogen peroxide... so just many enzymes and molecules that attack bonds within proteins or lipids and degrade the cell...and it can also induce apoptosis by cleaving some proteins in that pathway..
yeah and lysosomes are really really small... it can be around 50nm to 500nm and several microns as well in diameter...
http://www.springerlink.com/content/m7836867muk33268/ read that if you want to see what colour it is...
but yeah you gotta stain it to even see it or else it would be impossible to see and differentiate ...
ah lol more questions! ..mm not attempting to answer that PLANT question ew...
-
:D thanks andrewlolpool and TL(now i understand it better)!!
then...how many membranes would a molecule have to pass in moving from the interior of a lysosome to the outside of a cell?
so lysosome is only present in animal cells, so there are 3 membranes in animal cells right? and lysosomes have single membranes...? so.... the molecule have to pass 4 membranes.....? i have this feeling that i m wrong, haha
-
shes just messing with us
-
NO! lol i was saying it jokingly
-
aiya, i messed up the plant cell with the animal cell. animal cell = 1 phospholipid bilayer, plant cell = 3 layers. I m never gonna make that mistake again! maybe i do need some sleep my mind is going wiered ..
thanks again, you guys helped me soo much!!
-
huh? plants have a cell membrane..and a cell wall.. how is that 3?
-
....:( silly...
Plant Cells: 2 cell walls, one plasma membrane, one outer membrane made up of cellulose.
Animal cells: 1 cell wall, make up of phospholipid bilayer of peptidoglycan.
Prokaryotic cells: 3 cell walls, one capsule, one outer membrane, one plasma membrane.
I checked the books this time! haha
-
ahh , i see, i ll watch out,and use membranes instead of cell walls next time :)
thanks!!!
-
when you say animal cell
ur talking human cell? human cells don't have a peptidoglycan layer... only bacterial cell walls do
and when you say eukaryotic? you talk about a capsule? some bacteria have capsules and they are prokarytotic organisms ... and gram negative bacteria have a outer membrane
-
This thread has unnecessarily confused me about my knowledge of cells. Lol. Thank goodness andrewloppol put everything back into perspective :P
-
This thread has unnecessarily confused me about my knowledge of cells. Lol. Thank goodness andrewloppol put everything back into perspective :P
lol dont worry just keep the basics of cells in your head, dont lose focus by reading this if you already know what you do... i think monokekie is just confused a little
-
when you say animal cell
ur talking human cell? human cells don't have a peptidoglycan layer... only bacterial cell walls do
and when you say eukaryotic? you talk about a capsule? some bacteria have capsules and they are prokarytotic organisms ... and gram negative bacteria have a outer membrane
oops i meant prokaryotes, i swear that was a typo... o.O lol
someone's gonna have 1337 posts soon by the way, heh
-
This thread has unnecessarily confused me about my knowledge of cells. Lol. Thank goodness andrewloppol put everything back into perspective :P
lol, sorry akira if my silly questions have confused you a bit.. :P hopefully next time i will have better questions so that you you won't get confuzed :)
-
when you say animal cell
ur talking human cell? human cells don't have a peptidoglycan layer... only bacterial cell walls do
and when you say eukaryotic? you talk about a capsule? some bacteria have capsules and they are prokarytotic organisms ... and gram negative bacteria have a outer membrane
oops i meant prokaryotes, i swear that was a typo... o.O lol
someone's gonna have 1337 posts soon by the way, heh
Like nao? :D
(http://img163.imageshack.us/img163/3736/leet.png)
congrats :)! LOL awesomely you took a pic of it
-
This thread has unnecessarily confused me about my knowledge of cells. Lol. Thank goodness andrewloppol put everything back into perspective :P
lol, sorry akira if my silly questions have confused you a bit.. :P hopefully next time you won't get confuzed :)
Haha that's alright :)
Biology wooo. Where is everyone up to in biology? My class is going at an incredibly slow rate, and we are on chapter 4- DNA.
-
i dunno where my class's up to o.O i am behind....
-
haha! good idea! i ought to try that :)