PPQ's Flashcards
What is the three-dimensional shape of a protein also known as
Tertiary structure
Describe the 3D structure of an enzyme
- Globular/Fibrous (non-protein)
- specific shape of active site
- disulphide bonds/hydrogen bonds/hydrophobic interactions
How does the primary structure determine the 3D shape and its properties
- position/sequence of amino acids
- position of R groups determines
- determines position/type of bonds/folding
Explain the term causal relationship
Change in 1 variable directly results in a change of another
What bonds are between amino acids
Peptide
Where are the bonds between amino acids formed?
Between amino group of 1 and carboxyl group of another
3 differences between HDL and LDL
HDL is smaller - HDL contains more proteins - HDL contains less cholesterol
What drugs reduce blood cholesterol level
Statins
What are phospholipid made from
- Phosphate head
- two fatty acid tails
- water bond between fatty acids and glycerol
How can atherosclerosis lead to the damage of the heart muscle
- Narrows the lumen of coronary arterie
- reduces blood flow to cardiac muscle
- rescuing aerobic respiration
Explain the effects of temp on growth rate of an organism
- Temperature effects enzymes
- Higher temp increases kinetic energy
- producing more frequent collisions between enzyme and substrate
Describe the role of decomposes in the carbon cycle
- decomposes break down organic material
- so they respire
- giving off Co2
Explain redness and swelling at site of inflammation
- Histamines cause arterioles to dilate
- increasing blood flow to area
- also causing permeability of capillaries to increase
- allowing blood plasma to enter tissue
What does interferon do?
An infected cell will release interferon which will diffuse into surrounding cells, inhibiting protein synthesis, stopping viral replication
Role of tRNA in protein production
- tRNA transports amino acid to ribosome
- tRNA has anticodon that binds to complimentary codon on mRNA
- each tRNA carries particular amino acid
