Lecture 10

Question 1

metabolism

Answer 1

The sum of all chemical reactions. Biological molecules wear out. Damaged proteins are broken down and amino acids are recycled to make new ones.

Question 2

Catabolism vs anabolism

Answer 2

Catabolism: making large molecules from small ones

anabolism: making small molecules from large ones

Question 3

macro vs micro nutrients

Answer 3

Macro: Larger, fuel, construction elements in tissues

Micro: smaller, cofactor for enzymes

Question 4

Glycosidic bond formation

Answer 4

forward reaction = anabolic, backward reaction=catabolic. Occurs in carbs. A H from one sugar and OH from the other break off to form H2O and the carbon bond (from sugar that lost OH) forms s bond with the O (from the other sugar). A loss of H2O = anabolism. Liver is very generous when donating sugars.

Question 5

Fats

Answer 5

Long C chains. Saturated (full of H) and unsaturated (double bonds therefore, missing H). Travels around body via lipoproteins. Glycerol (3C) with fatty acid chain i.e triglyceride. Stored in adipose cells

Question 6

ATP to ADP

Answer 6

when phosphate is lost, it attaches to the + end of a protein. Then protein is then dephosphorylated, causing it to become - and the edges of the protein repel. Then a protein comes and removes a phosphate group and the ends become attracted. This makes the protein do work. Or it can add to an enzyme.