Topic 1.5
Presentation
•
Science, Biology
•
KG - University
•
Easy
MICHAEL SZCZEPANIK
Used 2+ times
FREE Resource
16 Slides • 18 Questions
1
2
Multiple Choice
DNA is often described as "antiparallel" when describing the directionality of the molecule. Which of the following answer reflects the antiparallel directionality of DNA?
The strands are parallel to each other but one strand is 5'-3' while the other is opposite (3'-5')
DNA is made up of 4 bases, adenine, thymine, guanine and cytosine.
Opposite strands of DNA are connected via hydrogen bonds between complementary bases
The DNA backbone consists of alternating sugar and phosphate components
3
4
Multiple Choice
1. Which group on amino acids leads to the folding of the protein?
2. Which level of folding is affected by this group?
1. R-group
2. Tertiary
1. Carboxyl-group
2. Tertiary
1. R-group
2. Primary
1. Carboxyl-group
2. Primary
5
6
Open Ended
Describe the Primary structure of potein
7
8
Multiple Choice
Secondary Structure results from hydrogen bonding between which groups of amino acids?
The Amine and Carboxyl groups
The Amine and R groups
The R and Carboxyl groups
Only the R groups
Only the Amine groups
9
Multiple Choice
What are the two categories of secondary structure?
Alpha helix and Beta pleated sheet
Alpha pleated sheet and Beta helix
Hydrogen bonding and R groups
Primary and Tertiary structures
10
11
Reorder
Tertiary structure involves folding of __1__ structures along the entire __2__. The four interactions that direct this folding are: ionic bonding, __3__ interactions, __4__ bridges and __5__ bonding
secondary
polypeptide
hydrophobic
disulfide
hydrogen
12
13
Match
Ionic bond
Hydrophobic interactions
Disulfide bridge
Hydrogen bond
Ionic bond
Hydrophobic interactions
Disulfide bridge
Hydrogen bond
14
15
Reorder
__1__ structure does not occur in all proteins, but some proteins require __2__ polypeptides folded at the __3__ structure to form a __4__ protein
Quaternary
multiple
Tertiary
functional
16
17
Multiple Choice
Isomers are defined as molecules with ...
the same number and type of atoms that are arranged differently.
a different number and type of atoms that are arranged differently.
the same number and type of atoms that are arranged identically.
a different number and type of atoms that are arranged identically.
18
Multiple Choice
Alpha and Beta glucose isomers differ by
the number of carbons in the ring
the arrangement of the -H and -OH on the 1st carbon
their structural formula
19
20
Match
Lactose
Maltose
Sucrose
Beta-glucose and Beta-galactose
Two alpha-glucose
Alpha-glucose and Beta-glucose
Beta-glucose and Beta-galactose
Two alpha-glucose
Alpha-glucose and Beta-glucose
21
22
Reorder
The most common polysaccharides are cellulose, __1__, and glycogen. The differences are a function of the __2__involved and the __3__ joining the monomers. Different polysaccharides can thus be a source of __4__ or a structural material that resists __5__.
starch
glucose isomers
types of linkages
readily available glucose
digestion
23
24
Reorder
Cellulose is found in __1__ and is made of __2__ linked by __3__. Few organisms can break beta-linkages because they lack the proper __4__ thus making it an ideal __5__ material.
structural
enzymes
beta-1,4 glycosidic linkages
beta-glucose molecules
plant cell walls
25
26
Reorder
Starch contains a mixture of 25-30% __1__ (unbranched chains linked by __2__ bonds) and 70-75% __3__ (branched chains with __4__ bonds every 24-30 glucose units). Starch can be easily hydrolyzed by __5__ to soluble sugars when required.
amylose
alpha-1,4 glycosidic
amylopectin
alpha-1,6 glycosidic
enzymes
27
28
Multiple Choice
Glycogen is
more highly branched and water-soluble compared to starch and is found in the liver and muscle of animals
less branched and water-insoluble compared to starch and is found in the roots of plants
more highly branched and water-soluble compared to starch and is found in the roots of plants
less branched and water-insoluble compared to starch and is found in the liver and muscle of animals
29
30
Reorder
Chitin is similr to __1__ but __2__ due to the addition of an __3__ group. It is found in the __4__ of many __5__.
cellulose
stronger
amine
exoskeleton
insects
31
32
33
Open Ended
Describe some of the structural and functional differences between Starch and Cellulose.
34
Poll
I feel ___ about this material
confident
good
just ok
lost
Show answer
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