Class notes
Class notes Introductory biology (BIOL1010) Lesson 2
- Course
- Institution
Entire collection of class notes taken from Dalhousie university BIOL1010, in detail and excellent to use while studying for the exam.
[Show more]
Seller
Follow
nkohoot
Content preview
MacromoleculesMacromolecules are polymers built from monomers.
Polymers: A long molecule made from many similar building blocks linked
together by covalent bonds. (Proteins, carbohydrates, nucleic acids)
Monomers: The repeating building blocks of polymers
Polymer assembly: Facilitated by enzymes
Dehydration reaction
● Bond forms between two monomers
○ Each monomer contributes part of an H2O molecule what was
released in the reaction
○ One monomer provides OH, the other provides H
● Reaction repeats as monomers are added
● Polymer constructed
Polymer disassembly
Hydrolysis (Greek = Break using water)
Monomer bond broken with addition of water molecule
H attaches to monomer and OH attaches to adjacent monomer
, Carbohydrates
Simple:
- Monosaccharides
- Essential for cellular respiration
- Simple sugars
Complex:
- Constructed from simple carbohydrates
Sugars
Monosaccharides:
- General molecular formula CH2O
- (ex. glucose)
Disaccharides:
- Two monosaccharides
- Joined by glycosidic linkage
Polysaccharides:
- Polymers with many monosaccharides joined with glycosidic linkages
- Used as storage or structure
- Function determined by sugar monomers and the position of its glycosidic
linkages
Storage polysaccharides
- Plants store starch
- Can later be withdrawn by hydrolysis
- Animals store glycogen
- Hydrolysis releases glucose
Structural polysaccharides
- Plants produce cellulose, tough walls of plants
- Glycosidic linkage differs from storage polysacc-
Glycosidic Linkage:
● Covalent bond
● Between two monosaccharides
● From dehydration reaction
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 or Stuvia-credit 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 nkohoot. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.69. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now