11-04-2004, 07:29 PM #1
Need help with college biology!!! someone please help me answer this lol!
Ok guys and gals, here's the question. I need some help and i've been looking for hours...but there is no clear cut answer to me.
Some algae have complex glassy structures in their cell walls. These structures form within the Golgi apparatus. How do these structures reach the cell wall without having to pass through a membrane?
question 2 is...
In mammals, fish and insects, Rotenone blocks the transfer of electrons from NADH to the electron transport chain. Exactly how does this affect glycolosis and the TCA cycle? What happens to ATP production and electron transport? Be sure to couch your answers in terms of cellular regulation.
someone please help!
11-04-2004, 07:50 PM #2
my best guess on question 1 is that it travels in a vesicle all the way through,and then fuses with the plasma membrane.
2 is guess as well, because its been a long time. i think it would cause anerobic metabolism, and cause an increase in lactic acid fermentation.
11-04-2004, 07:56 PM #3
Is this question #1 from the chapter... 5.8 membrains are dynamic 92?
11-04-2004, 08:20 PM #4Originally Posted by sin
Im trying to finish this take home test, and these answers are definetely not clear cut in the text. One must analyze thoroughly!
11-04-2004, 08:20 PM #5Originally Posted by BigMike J
11-04-2004, 08:21 PM #6VET
- Join Date
- Sep 2001
6. Golgi Apparatus / Complex / Bodies
• Found in dictyosomes
• Found in both plants and animals
• Series of flattened sacks
- Composed of plasma membrane
- Cisternae - partitions off cytoplasm
• Secretary Vessicles - contain enzymes
- Transport stuff around in cell
11-04-2004, 08:22 PM #7Originally Posted by sin
11-04-2004, 08:23 PM #8Originally Posted by KeyMastur
11-04-2004, 08:24 PM #9VET
- Join Date
- Sep 2001
hell if i know. i just searched through my notes that i had taken and posted that up there. left the rest for you to figure out.
btw, did you ask jeeves yet ??
11-04-2004, 08:26 PM #10Originally Posted by KeyMastur
lemme at him haha! i need this answer, ive been stuck forever.n/m im a dumbass...it's a search engine yes? i'll try
Last edited by big_mike; 11-04-2004 at 08:30 PM.
11-04-2004, 08:27 PM #11
Hey witch doctors, take your "science" elsewhere. Your big words enfeeble and scare me. When someone takes my picture, I wonder, "are they stealing my soul??" How do they get those little men and women inside the glass box in my living room to perform so reliably, night in and night out, without me having to give them food or water? I don't know.
11-04-2004, 08:27 PM #12VET
- Join Date
- Sep 2001
11-04-2004, 08:48 PM #13Originally Posted by BigGreen
Last edited by sin; 01-21-2007 at 05:30 PM.
11-04-2004, 08:51 PM #14Originally Posted by big_mike
you dont necessarily have exocytosis from vesicles fusing with the pm. this is also the way that integral membrane proteins end up in the outer membrane.
11-04-2004, 09:16 PM #15
The inbound path, The movement of cisternal contents through the stack means that essential processing enzymes are also moving away from their proper site of action.
Using a variety of signals, the Golgi separates the products from the processing enzymes that made them and returns the enzymes back to the endoplasmic reticulum.
This transport is also done by pinching off vesicles, but the inbound vesicles are coated with COPI (coat protein I)
The outbound path,Transition vesicles pinch off from the surface of the endoplasmic reticulum carrying
integral membrane proteins
soluble proteins awaiting processing
Pinching off requires that the vesicle be coated with COPII (Coat Protein II)
The transition vesicles move toward the cis Golgi on microtubules.
As they do so, their COPII coat is removed and they may fuse together forming larger vesicles.
These fuse with the cis Golgi
Sugars are added to proteins in small packets so many glycoproteins have to undergo a large number of sequential steps of glycosylation, each requiring its own enzymes.
These steps take place as shuttle vesicles carry the proteins from cis to medial to the trans Golgi compartments.
At the outer face of the trans Golgi, vesicles pinch off and carry their completed products to their various destinations.
Its been a few years sence i've had an actual bio class....
11-04-2004, 10:08 PM #16Originally Posted by Philliagorillia
11-04-2004, 11:09 PM #17
simple answer, it needs a protein transport
11-05-2004, 07:15 AM #18
endoplasmic reticulum is the mode of transport from the golgi i believe.
as for #2 believe the elecrtron transport chain becomes uncoupled, therefor ATp production decreases.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)