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Specialty Chemistry Forums => Biochemistry and Chemical Biology Forum => Topic started by: cloudy1290 on June 22, 2019, 07:51:35 AM

Title: Which statement is correct about cellulose and amylose?
Post by: cloudy1290 on June 22, 2019, 07:51:35 AM
Choice A : Cellulose is more stable than Amylose

Choice B : Amylose is more stable than cellulose

Choice C : Cellulose have helical structure while amylose does not

Choice D : Amylose have helical structure while cellulose does not

I searched on google for "helical structure" and found only "alpha helix". So I don't have any idea

but guessing from choices it must be A or B. But I don't know which one is more stable
Title: Re: Which statement is correct about cellulose and amylose?
Post by: Babcock_Hall on June 22, 2019, 09:25:00 AM
Did you Google amylose?  BTW the question is a little open-ended.  It might help to define what one means by stability.
Title: Re: Which statement is correct about cellulose and amylose?
Post by: cloudy1290 on June 22, 2019, 09:34:23 AM
Did you Google amylose?  BTW the question is a little open-ended.  It might help to define what one means by stability.

I'm not sure what stable means. I just remembered from a test. But I think there wasn't description for stable.

Yes, I searched for both amylose and cellulose. But found only cellulose's stability compared with its 1-4 type or something http://www1.lsbu.ac.uk/water/cellulose.html
Title: Re: Which statement is correct about cellulose and amylose?
Post by: AWK on June 22, 2019, 09:37:48 AM
https://www.e-education.psu.edu/egee439/node/662
http://beerandwinejournal.com/starch-ii/
https://de.dreamstime.com/illustration-d-der-st%C3%A4rke-schraubenartiges-amylosenbiomolek%C3%BCl-organisches-polymer-von-glukoseuntereinheiten-image108167006
Title: Re: Which statement is correct about cellulose and amylose?
Post by: cloudy1290 on June 22, 2019, 09:41:33 AM
https://www.e-education.psu.edu/egee439/node/662

What does this tell?
Title: Re: Which statement is correct about cellulose and amylose?
Post by: AWK on June 22, 2019, 09:44:00 AM
https://www.e-education.psu.edu/egee439/sites/www.e-education.psu.edu.egee439/files/5.jpg
Title: Re: Which statement is correct about cellulose and amylose?
Post by: cloudy1290 on June 22, 2019, 09:57:56 AM
https://www.e-education.psu.edu/egee439/sites/www.e-education.psu.edu.egee439/files/5.jpg

That's helical structure?
Title: Re: Which statement is correct about cellulose and amylose?
Post by: Babcock_Hall on June 22, 2019, 10:45:24 AM
For starch, which is closely related to amylose, there is a discussion of its structure here:  https://pubs.acs.org/doi/abs/10.1021/ed077p988
Title: Re: Which statement is correct about cellulose and amylose?
Post by: cloudy1290 on June 22, 2019, 10:50:54 AM
For starch, which is closely related to amylose, there is a discussion of its structure here:  https://pubs.acs.org/doi/abs/10.1021/ed077p988

for choice a and b, it can't be answered anyway? which one is correct