Naturally Occurring Polymers
This lesson covers:
- How amino acids combine to form 'polypeptides' (and proteins)
- How nucleotides combine to form 'nucleic acids' (and DNA)
- How sugars combine to form carbohydrates
Which monomers combine to form a polypeptide?
Amino acids
Nucleotides
Dicarboxylic acids and diols
Sugars
|
What do polypeptides form once they fold up?
A fat molecule
A protein
A starch molecule
|
The above molecule is an amino acid.
Which functional groups does an amino acid have?
(Select all that apply)
A carboxylic acid group
An 'R' group
An ester group
An amino group
|
What type of reaction takes place when amino acids combine to form a polypeptide?
Combustion reaction
Addition reaction
Condensation reaction
|
Which of the following names can be used to refer to the bond formed in a condensation reaction between amino acids?
(Select all that apply)
Peptide bond
Amino bond
Amide link
Amide bond
|
Using pen and paper, complete the equation for the condensation reaction between amino acids.
(Click 'Continue' when you're ready to check your answer)
|
Which monomers combine to form DNA?
Dicarboxylic acids and diols
Sugars
Amino acids
Nucleotides
|
Which letters do we use to represent the four nucleotides that make up DNA?
(Select all that apply)
T
G
A
C
P
|
one / two / three / helix / damage / pathogens
DNA molecules consist of polymer chains that coil around each other in a double . This helps to protect the DNA from .
|
What are the three elements that make up carbohydrates?
Oxygen
Nitrogen
Hydrogen
Carbon
|
Which of the following are examples of carbohydrate polymers?
(Select all that apply)
Polypeptide
Cellulose
Starch
Glycogen
|
Which of the following are examples of carbohydrate monomers?
(Select all that apply)
Fructose
Fatty acids
Glucose
Amino acids
|