Overview of Metabolism

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What is the energy currency of life?

GTP

ADP

NAD+

ATP (correct)

Which phase of intermediary metabolism involves the energy-requiring biosynthesis of cell components from smaller precursors?

Oxidative phosphorylation

Glycolysis

Anabolism (correct)

Catabolism

What are the biological transformations of energy called?

Exergonic reactions

Endergonic reactions

Metabolism (correct)

Energy transductions

What are the two types of reactions involved in metabolism that involve the release or requirement of energy?

Endergonic and exergonic reactions Signup and view all the answers

What is the term for the highly ordered macromolecules synthesized from simple precursors using chemical energy in fuels?

Anabolism Signup and view all the answers

What regulates metabolic pathways?

Regulatory enzymes Signup and view all the answers

What is degraded or synthesized in a series of reactions termed metabolic pathways?

Molecules Signup and view all the answers

Which compound is mentioned as an example that can form ATP by oxidation?

Glucose Signup and view all the answers

What are conversions of one form of energy to another called?

Energy transductions Signup and view all the answers

Which type of reaction involves a net release of free energy?

Exergonic reaction Signup and view all the answers

What is the role of ATP in cells?

ATP is the energy currency of cells, linking catabolism and anabolism. Signup and view all the answers

What components make up adenosine triphosphate (ATP)?

Adenine, ribose, and three phosphate groups. Signup and view all the answers

What happens when ATP is hydrolyzed?

Energy is released. Signup and view all the answers

Which process carries energy from catabolism to the energy-requiring processes of cells?

Oxidative phosphorylation Signup and view all the answers

What is the primary function of oxidative phosphorylation?

$\text{Production of ATP}$ Signup and view all the answers

What are the products of the oxidation of coenzymes NAD+ and FAD2+?

NADH and FADH2 Signup and view all the answers

What characterizes a redox reaction?

Transfer of electrons from a donor to an acceptor molecule. Signup and view all the answers

What is the primary function of substrate-level phosphorylation?

Production of ATP without the involvement of the electron transport chain. Signup and view all the answers

What is a characteristic feature of oxidative phosphorylation compared to substrate-level phosphorylation?

It is more efficient in producing ATP. Signup and view all the answers

Which compound serves as an alternative source for resynthesizing ATP due to its higher energy release than ATP?

1,3-BPG (1,3-bisphosphoglycerate) Signup and view all the answers

Which process involves the transfer of electrons to allow the formation of ATP?

Electron transport chain Signup and view all the answers

What is the primary function of catabolism in intermediary metabolism?

Energy-yielding degradation of nutrient molecules through oxidative processes. Signup and view all the answers