16 Questions
What is the overall process through which living systems acquire and utilize the free energy they need to carry out their various functions?
Metabolism
What are the series of consecutive enzymatic reactions that produce specific products referred to as?
Metabolites
Which category of reaction pathways involves breaking down nutrients and cell constituents exergonically to salvage their components and/or to generate free energy?
Catabolism
How many enzymes catalyze each reaction in metabolic pathways?
4000 enzymes
What kind of group transfer involves the addition of a nucleophile to the electrophilic carbon atom of an acyl compound?
Acyl group transfer
Which type of group transfer yields a trigonal bipyramidal intermediate with apical positions occupied by the leaving group and the attacking group?
Phosphoryl group transfer
In which type of reaction is peptide bond hydrolysis a familiar example?
Acyl group transfer
What is the most commonly transferred group in biochemical reactions according to the text?
Acyl groups
What type of reaction is the aldose–ketose interconversion?
Base-catalyzed reaction
Which enzyme catalyzes the aldose–ketose interconversion?
Phosphoglucose isomerase
What is the result of racemization in a molecule with one chiral center?
The chiral center inverts
What type of reaction is the conversion of L-methyl malonyl-CoA to succinyl-CoA by methylmalonyl CoA mutase?
Rearrangement reaction
What is the ultimate fate of the two bonding electrons lost by the carbon atom in redox reactions?
They are transferred to an electron acceptor such as NAD
What is the terminal electron acceptor for the electron pairs removed from metabolites by their oxidation in aerobic organisms?
Molecular oxygen (O2)
What type of reactions result in the formation of a double bond between two previously single-bonded saturated centers?
Elimination reactions
Which coenzyme can undergo two sequential one-electron transfers or a simultaneous two-electron transfer that bypasses the semiquinone state?
Flavin adenine dinucleotide (FAD)
Test your knowledge on oxidation–reduction (redox) reactions, particularly those occurring in metabolic pathways. Explore the concepts of electron loss or gain, bond cleavage, and electron transfer to electron acceptors like NAD. Understand the oxidation of alcohols and redox bond cleavage reactions. Date: 12/27/2023.
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