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Principle of Bioenergetics Quiz

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Questions and Answers

Which of the following is the primary function of catabolic reactions?

Regeneration of reducing power (NADPH)

Formation of excretory products in the cells

Accumulation of energy as ATP (correct)

Production of building blocks for anabolic metabolism

What is the main purpose of stage I in the stages of catabolism?

Generation of ATP

Hydrolysis of macromolecules into their respective monomers (correct)

Capture of energy in the form of ATP

Conversion of monomers to acetyl CoA

What is the sum total of the chemical activities of all cells known as?

Bioenergetics

Thermodynamics

Metabolism

Cellular metabolism (correct)

In cellular metabolism, what happens if energy needs are not met by carbohydrates and fat?

Amino acids are broken down Signup and view all the answers

What captures 40% of the energy released in catabolism?

ATP Signup and view all the answers

Which stage of catabolism involves the conversion of monomers to acetyl CoA?

Stage II Signup and view all the answers

In bioenergetics, which process involves the complete oxidation of acetyl CoA to CO2 and the synthesis of ATP by oxidative phosphorylation?

Catabolism Signup and view all the answers

Which term refers to the branch of biochemistry focusing on how cells transform energy, often by producing, storing, or consuming ATP?

Bioenergetics Signup and view all the answers

What is the main function of anabolic pathways in cellular metabolism?

Convert small precursors into macromolecules Signup and view all the answers

Which type of reaction requires a net input of energy and is exemplified by photosynthesis?

Endergonic Reactions Signup and view all the answers

According to bioenergetics, which thermodynamic quantity represents the amount of energy capable of doing work during a reaction at constant temperature and pressure?

Gibbs free energy (G) Signup and view all the answers

What is the main focus of the study of bioenergetics in living cells?

Energy transduction and transformation Signup and view all the answers

Which type of reaction releases energy and is exemplified by cellular respiration?

Exergonic Reactions Signup and view all the answers

In bioenergetics, what do catabolic pathways deliver for use in anabolic pathways?

$ATP$ and $NADPH$ Signup and view all the answers

What is the main goal of anabolic pathways in cellular metabolism?

$Convert$ small precursors into macromolecules Signup and view all the answers

In the context of bioenergetics and thermodynamics, what does the 1st law state about the total amount of energy in the universe?

$Energy$ may change form or it may be transported from one region to another, but it cannot be created or destroyed. Signup and view all the answers