Day Flashcards
Phospholipids bylayer
A double layer of phospholipids form where the tails are facing inward and the heads are facing outward, toward the water. This separates the inside and outside of the cell membrane
Protein functions (6)
structural support
storage
transport
cellular communication
movement
defense against foreign substances
Polar R groups
Serine, Threonine, Cysteine, Tyrosine, Asparagine, Glutamine
Where do humans and mammals store fat?
adipose cells
Fat composition/purpose
glycerol (alcohol) and fatty acids synthesis through dehydration
store large amounts of energy
Saturated Fatty acid (comp)
no carbon-carbon double bonds
solid in room temperature
associated with cardiovascular health
Lipid composition
mostly hydrocarbons in nonpolar covalent bonds.
Triglycerol
3 fatty acids linked to a glycerol in an ester linkage
Unsaturated fatty acid (comp)
cis double bond that causes a kink in one of the fatty acids
liquid in room temperature
amino acid composition
alpha carbon in the middle (asymmetrical) with an H under it, a amino group to the left, a carboxyl group to the right, and an R group above
Steroids comp and examples
4 fused carbon rings
cholesterol and hormones
Protein composition
unbranched polymer from 20 amino acid monomers
three dimensional because it’s one or more polypeptides layered on top of each other
Acidic R groups
Aspartic acid, Glutamic Acid
Most important function of protein
acts as an enzyme catalyst in cells
Non polar R groups
Glycine, Alanine, Valine, Leucine, Isoleucine, Methionine, Phenylalanine, Tryptophan, Proline
