biochemistry (enzymes) Flashcards
1
Q
function of enzymes
A
speeds up chemical reaction by lowering the activation energy
2
Q
Why can a change in pH or temperature alter the function of biomolecules like enzymes?
A
pH or temperature can change the shape of the protein which will alter the active site and make it so that the substrate cannot bind. The enzyme will become denatured.
3
Q
what types of molecules can pass through the phospholipid bilayer?
A
small and nonpolar
4
Q
how do large, polar or charged materials get in or out of a cell
A
transport protein
5
Q
Why can’t large, polar or charged molecules pass through the phospholipid bilayer?
A
They can’t pass through the nonpolar, hydrophobic tail layer
