Why is an enzyme considered "specific"? A. Only one type of enzyme is found in our bodies B. Only certain enzymes can pass through the cell membrane C. Its active site must match the substrate to do its job D. The enzyme can only move from high to low concentration

Why is an enzyme considered "specific"? A. Only one type of enzyme is found in our bodies B. Only certain enzymes can pass through the cell membrane C. Its active site must match the substrate to do its job D. The enzyme can only move from high to low concentration

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter5: Ground Rules Of Metabolism

Section: Chapter Questions

Problem 8SA

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Concept explainers

Electron Transport Chain

The electron transport chain, also known as the electron transport system, is a group of proteins that transfer electrons through a membrane within mitochondria to create a gradient of protons that drives adenosine triphosphate (ATP)synthesis. The cell uses ATP as an energy source for metabolic processes and cellular functions. ETC involves series of reactions that convert redox energy from NADH (nicotinamide adenine dinucleotide (NAD) + hydrogen (H)) and FADH2(flavin adenine dinucleotide (FAD)) oxidation into proton-motive force(PMF), which is then used to synthesize ATP through conformational changes in the ATP synthase complex, a process known as oxidative phosphorylation.

Metabolism

Picture a campfire. It keeps the body warm on a cold night and provides light. To ensure that the fire keeps burning, fuel needs to be added(pieces of wood in this case). When a small piece is added, the fire burns bright for a bit and then dies down unless more wood is added. But, if too many pieces are placed at a time, the fire escalates and burns for a longer time, without actually burning away all the pieces that have been added. Many of them, especially the larger chunks or damp pieces, remain unburnt.

Cellular Respiration

Cellular respiration is the cellular process involved in the generation of adenosine triphosphate (ATP) molecules from the organic nutritional source obtained from the diet. It is a universal process observed in all types of life forms. The glucose (chemical formula C6H12O6) molecules are the preferred raw material for cell respiration as it possesses a simple structure and is highly efficient in nature.

Question

Why is an enzyme considered "specific"?

A. Only one type of enzyme is found in our bodies

B. Only certain enzymes can pass through the cell membrane

C. Its active site must match the substrate to do its job

D. The enzyme can only move from high to low concentration

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