Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
What are the two main components of a lipid molecule?
|
Fatty acids and Glycerol
|
|
|
What is the difference between a saturated fatty acid and an unsaturated fatty acid?
|
An unsaturated fatty acid has at least one C=C bond, and a saturated fatty acid has all C-C single bonds.
|
|
|
What is the difference between a lipid and a phospholipid?
|
In the phospholipid a fatty acid molecule is replaced by a phosphate group.
|
|
|
Which four elements are present in every amino acid?
|
Carbon Hydrogen Oxygen Nitrogen
|
|
|
Which of these elements are not present in carbohydrates or lipids?
|
Nitrogen
|
|
|
What is the formula for an amino acid?
|
NH2
|
|
|
What is the formula for a carboxyl group?
|
-COOH
|
|
|
Explain how the primary structure of a protein determines its 3D-dimenstional shape.
|
The 3D shape is determine by the bonds that form between the R groups of different amino acids in the chain. The sequence of these amino acids therefore affects where these bonds will form.
|
|
|
In cartilage the collagen rods are arranged in many different directions. Suggest the advantage of this.
|
The tangle of collagen rods makes it less likely that the cartilage will tear and gives strength to the structure.
|
|
|
In the cornea, collagen rods are stacked in neat piles. Suggest the advantage of this.
|
The cornea has to be transparent. The regular stacking of the collagen rods prevents light being scattered in all directions.
|
|
|
|
|
