lecture 3

Question 1

building block examples

Answer 1

simple carbohydrates
lipids
nucleobases
amino acids

Question 2

macromolecule examples

Answer 2

complex carbohydrates
lipids
nucleic acids (DNA, RNA)
protein

Question 3

supramolecular assembly examples

Answer 3

membranes
ribosomes
chromatin

Question 4

organelles

Answer 4

nucleus
mitochondria
golgi
ER

Question 5

hexose monosaccharides

Answer 5

building blocks of higher order carbohydrates

Question 6

pentose monosaccharides

Answer 6

part of larger molecules e.g nuclei acids

Question 7

carbohydrate polysaccharide examples

Answer 7

plants: starch- amylose, amylopectin
cellulose fibre
animals- glycogen

Question 8

functions of carbohydrates

Answer 8

structure (e.g cellulose microfibrils in cell wall)
energy (source)
recognition (cell-cell)

Question 9

characteristics of lipids

Answer 9

not polymers
hydrophobic
heterogeneous- e.gs= triacyglycerols, steroids, phospholipis, fat soluble vitamins

Question 10

functions of lipids

Answer 10

structural (cholesterol and phospholipids)
energy (e.g triacylglycerol)
regulatory (e.g hormones chlolesterol> testosterone, estrogen

Question 11

purines (2 rings)

Answer 11

adenine and guanine

Question 12

pyridamines (1 ring)

Answer 12

thymine, cytosine, uracil

Question 13

functions of proteins

Answer 13

structural (collagen- protein in skin bones)
storage (seed proteins, egg white-albumin)
contractile (actin, myosin)
catalytic (amylase RNA polymerase)
transport (haemoglobin)
toxic (botulinum toxin)
protective (antibodies immune proteins)
regulatory (insulin- peptide hormone)