/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 3 Which of the following molecules... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 7: Problem 3

Which of the following molecules are oxidizing agents? a. \(\mathrm{FAD}^{+}\) and \(\mathrm{NAD}^{+}\) b. \(\mathrm{FADH}_{2}\) and \(\mathrm{NADH}\) c. FAD and \(\mathrm{FADH}_{2}\) d. \(\mathrm{NAD}^{+}\) and \(\mathrm{NADH}\)

Short Answer

Expert verified
a. \( \text{FAD}^+ \) and \( \text{NAD}^+ \)

Step by step solution

01

Understand the concept of an oxidizing agent

An oxidizing agent is a substance that gains electrons and, in the process, oxidizes another substance. It is typically in an electron-deficient state because it accepts electrons.
02

Identify the electron-deficient states in the given options

We need to determine which molecules in the given options are in a state where they can accept electrons. Molecules in their oxidized form (such as \( \text{NAD}^+ \) and \( \text{FAD}^+ \)) can act as oxidizing agents.
03

Analyze the given options for oxidizing agents

Option a: \( \text{FAD}^+ \) and \( \text{NAD}^+ \) are both in their oxidized forms, making them capable of acting as oxidizing agents.Option b: \( \text{FADH}_2 \) and \( \text{NADH} \) are both in their reduced forms and cannot act as oxidizing agents.Option c: FAD (which is actually FAD^+ in its oxidized state) and \( \text{FADH}_2 \) (reduced state) includes one oxidizing agent and one reducing agent.Option d: \( \text{NAD}^+ \) (oxidized form) and \( \text{NADH} \) (reduced form) also includes one oxidizing and one reducing agent.
04

Select the correct answer

From the analysis, options a has both molecules in their oxidized states, making both of them oxidizing agents.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Oxidation-Reduction Reactions
Oxidation-reduction reactions, often called redox reactions, are chemical processes where electrons are transferred between molecules. In these reactions:
  • The substance that loses electrons is oxidized.
  • The substance that gains electrons is reduced.
  • An oxidizing agent is a substance that gains electrons and is reduced.
  • A reducing agent is a substance that loses electrons and is oxidized.

For example, in cellular respiration, glucose is oxidized to carbon dioxide, and oxygen is reduced to water. These reactions are crucial for producing energy in cells. Understanding redox reactions helps you grasp how cells generate ATP, the energy currency of the cell.
NAD+
NAD+ (Nicotinamide Adenine Dinucleotide) is an essential electron carrier in cellular respiration. It is a coenzyme found in all living cells.
  • In its oxidized state, it's represented as NAD+.
  • When it accepts electrons, it becomes reduced to NADH.

NAD+ plays a vital role in transferring electrons from one reaction to another. For instance, during glycolysis and the Krebs cycle, NAD+ accepts electrons, turning into NADH. Later, NADH donates these electrons to the electron transport chain, helping to produce ATP. This cyclical process of accepting and donating electrons is key to maintaining the energy flow in cells.
FAD+
FAD+ (Flavin Adenine Dinucleotide) is another crucial electron carrier in cellular respiration. Similar to NAD+, it exists in an oxidized (FAD) and a reduced form (FADH2).
  • FAD is the oxidized form and acts as an oxidizing agent.
  • FADH2 is the reduced form and acts as a reducing agent.

FAD participates specifically in the Krebs cycle. It accepts electrons and hydrogen atoms, converting to FADH2. Like NADH, FADH2 later donates these electrons to the electron transport chain, facilitating further ATP production. Understanding the role of both NAD+ and FAD+ is essential to see the complete picture of cellular respiration and energy production.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Which molecules are produced in glycolysis and used in fermentation? a. acetyl-CoA and NADH b. lactate, ATP, and \(\mathrm{CO}_{2}\) c. glucose, ATP, and \(\mathrm{NAD}^{+}\) d. pyruvate and \(\mathrm{NADH}\)

Which of the following statements about catabolic pathways is false? a. Carbohydrates can feed into oxidative phosphorylation. b. Glycerol can be broken down into glucose and feed into glycolysis. c. Amino acids can feed into pyruvate oxidation. d. Fatty acids can feed into the citric acid cycle.

What evidence provides the strongest support that glycolysis is an older and more conserved pathway than the citric acid cycle? a. Glycolysis is the primitive pathway as it is found in all three domains. It also occurs in anaerobic conditions and in the cytosol. b. This pathway occurs in the cytosol, is found in all animals and plants, and does not require oxygen. c. Glycolysis takes place in anaerobic conditions, can metabolize cholesterol and fatty acids, and occurs even in methanogens. d. This pathway only occurs in the mitochondria. It is highly flexible because it is found in almost all organisms.

In the first step of glycolysis, what is glucose transformed into? a. glucose----phosphate b. fructose- \(1,6\) -bisphosphate c. dihydroxyacetone phosphate d. phosphoenolpyruvate

What happens when a chemical is reduced during a reaction? a. The compound is reduced to a simpler form. b. An electron is added to the chemical. c. A hydrogen atom is removed from the substrate. d. acts as a catabolic reaction
See all solutions

Recommended explanations on Biology Textbooks

Biological Organisms

Read Explanation

Ecological Levels

Read Explanation

Substance Exchange

Read Explanation

Cellular Energetics

Read Explanation

Control of Gene Expression

Read Explanation

Bioenergetics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.