Definitions Flashcards
Specific Heat Capacity
The heat needed to raise the temperature of 1kg of water by 1°C
Latent heat of vapourisation
The energy absorbed when changing state
Primary structure of a protein
The specific sequence of amino acids that make a polypeptide chain
Secondary structure of a protein
The shape of a protein due to hydrogen bonding (alpha helix or beta pleated sheat)
Tertiary structure of protein
The folding of alpha helices and beta pleated shears into a globular 3D structure
Quarternary structure of protein
The combination of 2 or more individual types of proteins (not all proteins have this)
Semi-conservative replication
One new and one old strand
Coenzyme
Conjugate protein with an organic additional group
(eg NADP, NAD, glycoprotein)
Cofactor
Conjugate protein with an inorganic and not tightly bound group attached
(Cl-)
Prosthetic group
Tightly bound addition to a protein
(Haem, Zn 2+)
Diffusion
Net movement of a substance from a region of high conc to a region of low conc
(Facilitated allows water soluble, charged ions and larger molecules to diffuse- carrier/channel proteins)
Active transport
Movement of molecules against the concentration gradient which requires energy (ATP)
Osmosis
Diffusion of water from a region of high water potential to a region of low water potential through a partially permeable membrane
Water potential
The tendency of water molecules in a system to move
