Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
BioChem C3:E1
Chap 3 Exam 1
| Question | Answer |
|---|---|
| What are carbohydrates? | (CH2O)n , n>3 |
| What are monosaccarides? What biological molecule are they categorized under? | A sugar, Carbohydrates |
| What are Disaccharides? | two sugars bound together |
| What type of bond links together polysaccharides | glycosidic |
| What is the simplest aldose? | Glyceraldehyde |
| What is the simplest Ketose? | Dihydroxyacetone |
| What are some examples of common monosaccharides? | Ribose, Glucose, Fructose |
| Ribose is a(n) | aldose, pentose |
| Glucose is a(n) | aldose, hexose |
| Fructose is a(n) | ketose, hexose |
| Most sugars in nature have the _ configuration | D |
| Stereoisomer definition | any of a group of isomers in which atoms are linked in the same order but differ in their spatial arrangement |
| enantiomer definition | non-superimposable, They are MIRROR images (ex: hands) |
| Diastereomer | non-superimposable NON MIRROR images, when there are 2 or more chiral carbons , they have different configurations at one or more (but not all) stereocenters |
| an aldopentose has this many number of stereoisomers (3 chiral centers) | 2^3 = 8 |
| Epimers definition | differ only by the configuration around one chiral carbon, special diasteromers, non-superimposable |
| diastereomers must have _ chiral carbons | 2 or more |
| cyclical sugars are ______ | non planar |
| Glycosidic bonds links the _____ carbon to another group | anomeric |
| Glycoside definition | a molecule consisting of a suar linked to another molecule by glycosidic bond |
| Phosphorylated sugars: _______ | Glyceraldehyde-3-phosphate and Fructose-6-phosphate are intermediates in the metabolic pathways fro the breakdown of GLUCOSE |
| Ribose | RNA |
| Deoxyribose | DNA |
| Lactose and Sucrose are a source of what? | Metabolic fuel , Disaccharides |
| Starch and Glycogen do what? | Fuel storage, Polysaccharides |
| Cellulose does what? | Structural support |
| Biofilm is an example of what? | Structural bacterial polysaccharide |
| Lactose is a _____ and has what bond? | milk sugar, B(1,4) glycosidic bond, Disaccharide complex (galactose and glucose) |
| Sucrose is a _____ and has what bond? | the most abundant sugar in nature, a(1,2) glycosidic bond, Disaccharide complex (Glucose and Fructose) |
| Starch and Glycogen are ______ forms of glucose | storage forms |
| Glucose polymers are linked by a(1,4) glycosidic bonds such as | starch and glycogen |
| cellulose is linked by what? | B(1,4), forms extended fibers that lend rigidity and strength to plant cell walls. WE CANNOT DIGEST (no trees for dinner) |
| Why are biofilms problematic? | create a barrier for antibiotics (bacterial extracellular polysaccharide) |
| Glycoproteins definition | Oligosaccharides chains are covalently attached to the proteins as N-linked or O-linked oligosaccharides |
| What is the function of Glycoproteins? | Protection and Recognition Markers |
| Glycoproteins : N-linked via | Asparagine (Asn) |
| Glycoproteins : O-linked via | Serine (Ser) or Threonine (Thr) |
Created by:
user-1982281