61 Questions
What is the final electron acceptor in carbon oxidation?
Oxygen
Which compound is an activated carrier of phosphoryl groups used to form ATP?
Acetyl CoA
What type of reaction is dehydrogenation?
Oxidation
Which molecule is responsible for transferring high-potential electrons in reductive biosynthesis?
Nicotinamide Adenine Dinucleotide Phosphate
What is the reactive site in Coenzyme A for acyl group transfer?
Thioester bonds
Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?
NADH
What is the primary function of activated carriers of electrons for fuel oxidation?
To generate ATP
What is the derivative of vitamin riboflavin that accepts electrons and protons forming FADH2?
Isoalloxazine ring
What type of reactions are characterized by the gain of electrons?
Reduction
What drives thermodynamically unfavorable reactions by being coupled with them?
Nicotinamide Adenine Dinucleotide Phosphate
What is the unifying motif of biochemistry as mentioned in the text?
Homeostasis maintenance
Which process involves the regulation of gene transcription to control the amounts of enzymes?
Rate of synthesis regulation
What is the primary function of activated carriers of electrons for the synthesis of biomolecules?
Transfer high-potential electrons
What do enzymes control in relation to the flow of free energy and reducing power according to the text?
Kinetic stability
How are thermodynamically unfavorable reactions driven in metabolic pathways as per the text?
Activated carriers of electrons
Which molecule acts as an electron donor in most reductive biosynthesis processes?
NADPH
What is the role of NADH, NADPH, and FADH2 in the absence of an enzyme according to the text?
Reaction with O2
Which molecule is involved in transferring acyl groups in both catabolism and anabolism based on the text?
$CoA$
What is the role of activated carriers of electrons for fuel oxidation?
Transport high-potential electrons in catabolic reactions
What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?
Carbon Oxidation paired with a Reduction
Which molecule is involved in transferring acyl groups in both catabolism and anabolism based on the text?
Coenzyme A
What is the primary function of activated carriers of electrons for the synthesis of biomolecules?
Act as electron donors in reductive biosynthesis
Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?
Flavin adenine dinucleotide
In addition to ATP, what else is required in anabolic reactions according to the text?
High-potential electrons
What characteristic is associated with NADH, NADPH, and FADH2 reacting slowly with O2 in the absence of an enzyme?
Kinetic stability
What is the reactive site in Coenzyme A for acyl group transfer?
Terminal sulfhydryl group
What is the derivative of vitamin riboflavin that accepts two electrons and two protons forming FADH2?
Flavin adenine dinucleotide
What is the primary function of activated carriers of electrons for fuel oxidation according to the text?
Transfer high-potential electrons in catabolic reactions
What is the ultimate electron acceptor in carbon oxidation?
O2
Which molecule is an activated carrier of phosphoryl groups and is used to form ATP?
ATP
What is the primary role of activated carriers of electrons for fuel oxidation?
Transfer high-potential electrons to O2
What is the common reactive site in Coenzyme A for acyl group transfer?
Sulfhydryl group
What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?
Activated carriers of electrons
Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?
FADH2
What is the function of nicotinamide adenine dinucleotide phosphate in reductive biosynthesis?
Provide high-potential electrons
What drives a thermodynamically unfavorable reaction by being coupled with it in metabolic pathways?
Activated carriers of electrons
What is the primary function of nicotinamide adenine dinucleotide phosphate in reductive biosynthesis?
High-potential electron donor
Which molecule is involved in the transfer of acyl groups in both catabolism and anabolism?
Coenzyme A
What is the common reactive site for acyl group transfer in Coenzyme A?
Terminal sulfhydryl group
Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?
Flavin adenine dinucleotide
What is the primary role of activated carriers of electrons for fuel oxidation?
Transfer electrons to O2
What drives the thermodynamically unfavorable reaction in metabolic pathways?
Activated carriers of electrons
Which molecule acts as an electron donor in most reductive biosynthesis processes?
NADPH
What is the final electron acceptor in carbon oxidation?
Molecular oxygen
What type of reactions are characterized by the gain of electrons?
Reduction
What is the primary function of nicotinamide adenine dinucleotide phosphate?
To accept high potential electrons for anabolic reactions
Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?
FADH2
What is the role of NADH, NADPH, and FADH2 in the absence of an enzyme according to the text?
React slowly with O2
What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?
Activated carriers of electrons
What is the common reactive site for acyl group transfer in Coenzyme A?
Terminal sulfhydryl group
What is the primary role of activated carriers of electrons for the synthesis of biomolecules?
Transfer high-potential electrons for anabolic reactions
What is the final electron acceptor in carbon oxidation?
Molecular oxygen
Which molecule acts as an electron donor in most reductive biosynthesis processes?
NADPH
What type of reactions are characterized by the gain of electrons?
Reduction
What is the common reactive site for acyl group transfer in Coenzyme A?
Thioester bonds
What drives thermodynamically unfavorable reactions by being coupled with them in metabolic pathways?
ATP
Which molecule has a higher affinity for electrons than fuel molecules but lower affinity than O2?
Nicotinamide adenine dinucleotide phosphate
What is the primary function of activated carriers of electrons for fuel oxidation?
Making ATP
What drives a thermodynamically unfavorable reaction by being coupled with it in metabolic pathways?
ATP
What is the role of activated carriers of electrons for the synthesis of biomolecules?
Provide high potential electrons for anabolic reactions
What do enzymes control in relation to the flow of free energy and reducing power according to the text?
The reaction rates
Test your knowledge on the synthesis of macromolecules and other biomolecules, energy production from the environment, phototrophs, chemotrophs, and the linked series of chemical reactions in metabolism. Explore the concepts of catabolism and anabolism in this quiz.
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