Glycolysis produces nadh. however, nadh cannot cross the inner mitochondrial membrane to be used in the electron transport chain (respiratory chain). the malate-aspartate shuttle in some animal cells transfers electrons from cytosolic nadh to the matrix. a diagram of the malate-aspartate shuttle is given below. you can use it as a reference to answer parts (a) and (b)

a) which compound accepts electrons from nadh, producing a compound that can pass through the inner membrane?
a. glutamate
b. aspartate
c. α- ketoglutarate
c. oxaloacetate
b) which compound transfers reducing equivalents (electrons) into the mitochondrial matrix? o
a. malate
b. α-ketoglutarate
c. oxaloacetate
d. glutamate
e. aspartate