Task 4 Unit 13 - Understand and Interpret Animal Behaviour and Communication (THIS WILL SHOW UP IN THE MARK BOOK AS PLAGIARISM AND YOU WILL GET EXCLUDED OUT THE COURSE) THIS WORK IS MEANT TO BE AS A REFERENCE OR GUIDANCE FOR YOU'RE WORK PLEASE RESPECT MY WORK AND MAKE SURE YOU GIVE ME CREDIT OR PUT...
the work was not unit 13 at all, it wasnt even animal management work, but applied science!
By: bziman • 5 year ago
It was my mistake while naming the documents, perhaps I have dozens of them to upload and it is human to make mistakes I apologise, and will correct very soon, in fact If you just read the assignment you can tell it is named by mistake since the content is something else ❤️If you check my other reviews I have 5 star reviews just don’t judge too soo
Unit 13 ressubmition Task 4
Iman Boukjija Zamani
11053457
Unit 13: Biochemistry and Biological Technique
Task 4: Describe why starch and cellulose have different shapes even though they are both
made from glucose subunits. (M1)
Starch and cellulose are both composed of the same substance but with different structures.
Both starch and cellulose are polysaccharides; that is, both molecules are made up of a lot
of sugar molecules. In particular, starch and cellulose are made of the
sugar molecule glucose.
Glucose
Glucose is a type of sugar made of carbon (C), hydrogen (H), and oxygen
(O). These elements form a ring with one of the carbons sticking off the
end, kind of like a ball of yarn with an unraveled string. There are also
alcohol (OH) groups attached to the carbons. There are six carbons
numbered from 1 to 6, with the 'unraveled string' hanging off taking the 6th
position.
Glucose is a 3D molecule; this means the attached elements can be pointed in different
directions at any given time. There are two main forms of glucose: alpha and beta. In alpha
glucose, the alcohol attached to carbon 1 is down. In the beta glucose, the alcohol attached
to carbon 1 is up.
When one molecule of glucose joins with another, the two alcohols attached to the carbons
combine, causing the new molecule to kick away water and share oxygen. A common way
the molecules are linked is for carbon 1 on one glucose to share oxygen with carbon 4 on
another.
Starch Structure
A starch molecule is a polysaccharide assembled
from the simple sugar glucose; it can contain
anywhere from five hundred to several hundred
thousand glucose molecules joined by covalent
bonds.
Starch is composed of two different molecules, amylose and amylopectin. Amylopectin is
very similar to glycogen in that it is made of many 1,4 linked alpha-glucose molecules, and
branches via 1,6 linkages - the main difference is that amylopectin branches less than
glycogen. Amylose, on the other hand is a very long, unbranched chain of several thousand
1,4 linked glucose molecules, and as in glycogen and amylopectin, these chains curve to coil
up into helical structures for compactness. Amylose chains are usually longer than
amylopectin. Plant starch is typically 20 to 30 percent amylose and 70 to 80 percent
amylopectin. The general form of starch are grains.
Cellulose Structure
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller bziman. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £3.49. You're not tied to anything after your purchase.
