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1. Overview of Cell Biology(0)

Evolution of the Cell
(0)

Properties of the Cell
(0)

History of Cell Biology
(0)

Prokaryotic Cell Architecture
(0)

Eukaryotic Cell Architecture
(0)

Prokaryotes vs. Eukaryotes
(0)

Model Organisms
(0)

Viruses
(0)

Overview of Tissue Structures
(0)

2. Chemical Components of Cells(0)

Small Molecules
(0)

Chemical Bonds
(0)

Acids, Bases, and Buffers
(0)

Four Classes of Macromolecules
(0)

Properties of Macromolecules
(0)

3. Energy(0)

Energy Sources and Generation
(0)

Gibbs Free Energy and Equilibrium
(0)

Activated Carriers
(0)

Enzymes
(0)

Enzyme Kinetics
(0)

Enzyme Inhibitors
(0)

4. DNA, Chromosomes, and Genomes(0)

DNA Discovery
(0)

Structure and Function of DNA
(0)

Helical Formations of DNA
(0)

DNA vs. RNA
(0)

Packaging of DNA
(0)

The Epigenetic Code
(0)

Evolution of the Genome
(0)

Genomic Comparison
(0)

Human Genetic Variation
(0)

Transposons and Viruses
(0)

5. DNA to RNA to Protein(0)

DNA Transcription
(0)

mRNA Processing
(0)

tRNA, rRNA and the Codon Code
(0)

Translation
(0)

mRNA Export and Nuclear Structures
(0)

RNA and the Origins of Life
(0)

6. Proteins(0)

Protein Basics
(0)

Protein Folding
(0)

Complex Protein Structures
(0)

Enzymes and Protein Binding
(0)

Protein Regulation
(0)

Protein Degradation
(0)

7. Gene Expression(0)

Basics of Gene Expression Control
(0)

Epigenetic Regulation of Gene Expression
(0)

Transcriptional Regulators
(0)

Action of Transcriptional Regulators
(0)

Post-Transcriptional Regulators
(0)

8. Membrane Structure(0)

The Lipid Bilayer
(0)

Membrane Proteins
(0)

9. Transport Across Membranes(0)

Principles of Transmembrane Transport
(0)

Passive Transport: Diffusion and Osmosis
(0)

Transporters
(0)

Ion Channels and Membrane Potential
(0)

Ion Channels and Neurons
(0)

10. Anerobic Respiration(0)

Breakdown and Utilization of Sugars and Fats
(0)

Glycolysis
(0)

Fermentation
(0)

Gluconeogenesis
(0)

11. Aerobic Respiration(0)

Overview of Cellular Respiration
(0)

Mitochondria
(0)

Citric Acid Cycle
(0)

Electron Transport
(0)

ATP Synthesis Driven from Proton Gradients
(0)

12. Photosynthesis(0)

Overview of Photosynthesis
(0)

Chloroplast
(0)

Light Dependent Reactions
(0)

Light Independent Reactions
(0)

13. Intracellular Protein Transport(0)

Membrane Enclosed Organelles
(0)

Protein Sorting
(0)

ER Processing and Transport
(0)

Golgi Processing and Transport
(0)

Vesicular Budding, Transport, and Coat Proteins
(0)

Targeting Proteins to the Mitochondria and Chloroplast
(0)

Lysosomal and Degradation Pathways
(0)

Endocytic Pathways
(0)

Exocytosis
(0)

Peroxisomes
(0)

Plant Vacuole
(0)

14. Cell Signaling(0)

Overview of Cell Surface Receptors
(0)

Overview of Signaling Molecules
(0)

G Protein Coupled Receptors
(0)

Protein Kinase Receptors
(0)

Intracellular messnegers: Hormones and Nitric Oxide
(0)

Phosphoinositide Signaling Pathways
(0)

Integration of Multiple Signaling Pathways
(0)

Signaling in Plants
(0)

15. Cytoskeleton and Cell Movement(0)

Overview of the Cytoskeleton
(0)

Intermediate Filaments
(0)

Microtubules
(0)

Kinesins and Dyneins
(0)

Cilia and Flagella
(0)

Microtubules and Cell Division
(0)

Actin Filaments
(0)

Actin Based Movement
(0)

Muscle Contractions
(0)

16. Cell Division(0)

Overview of the Cell Cycle
(0)

Control of the Cell Cycle
(0)

G1 Phase
(0)

DNA Replication
(0)

DNA Repair and Recombination
(0)

Mitosis
(0)

Cytokinesis
(0)

Control of Cell Size
(0)

Control of Cell Death
(0)

17. Meiosis and Sexual Reproduction(0)

Basics of Meiotic Genetics
(0)

Mendel and the Laws of Inheritance
(0)

Meiosis
(0)

18. Cell Junctions and Tissues(0)

Cell-Cell Adhesion
(0)

Cell-Cell Junctions
(0)

Extracellular Matrix of Animal Cells
(0)

The Basal Lamina
(0)

Plant Tissue
(0)

19. Stem Cells(0)

Stem Cells
(0)

20. Cancer(0)

Overview of Cancer
(0)

Oncogenes and Tumor Suppressors
(0)

Carcinogens
(0)

Tumor Viruses
(0)

Metastasis and Cancer Spread
(0)

Cancer Treatment
(0)

21. The Immune System(0)

Overview of Host Defenses
(0)

The Innate Immune Response
(0)

B Cell Development
(0)

Antibody Structure and Diversity
(0)

T Cells
(0)

MHC and Antigen Presentation
(0)

Immune System Collaboration
(0)

22. Techniques in Cell Biology(0)

The Light Microscope
(0)

Electron Microscopy
(0)

The Use of Radioisotopes
(0)

Cell Culture
(0)

Isolation and Purification of Proteins
(0)

Studying Proteins
(0)

Nucleic Acid Hybridization
(0)

DNA Cloning
(0)

Polymerase Chain Reaction - PCR
(0)

DNA Sequencing
(0)

DNA libraries
(0)

DNA Transfer into Cells
(0)

Tracking Protein Movement
(0)

RNA interference
(0)

Genetic Screens
(0)

Bioinformatics
(0)

11. Aerobic Respiration

Citric Acid Cycle

11. Aerobic Respiration

Citric Acid Cycle: Videos & Practice Problems

Video Lessons Practice Worksheet

Citric Acid Cycle Practice Problems

20 problems

Problem 1Multiple Choice

What is the primary role of the citric acid cycle in cellular respiration?

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Problem 2Multiple Choice

Which enzyme complex is responsible for converting pyruvate into Acetyl CoA?

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Problem 3Multiple Choice

Why is Acetyl CoA considered a crucial molecule for the citric acid cycle?

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Problem 4Multiple Choice

Which of the following are main products of the citric acid cycle?

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Problem 5Multiple Choice

Why is the citric acid cycle considered aerobic even though it does not directly use oxygen?

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Problem 6Multiple Choice

Which step in the citric acid cycle involves the formation of citrate?

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Problem 7Multiple Choice

What is the significance of the isomerization step in the citric acid cycle?

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Problem 8Multiple Choice

How do oxidation reactions in the citric acid cycle contribute to energy production?

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Problem 9Multiple Choice

Which of the following best describes the role of enzymes in the citric acid cycle?

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Problem 10Multiple Choice

How does the citric acid cycle impact overall cellular metabolism?

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Problem 11Multiple Choice

Which process directly follows the citric acid cycle in cellular respiration?

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Problem 12Multiple Choice

What is the fate of pyruvate in the presence of oxygen?

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Problem 13Multiple Choice

In a scenario where Acetyl CoA is not available, what would be the immediate impact on the citric acid cycle?

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Problem 14Multiple Choice

How many molecules of NADH are produced per turn of the citric acid cycle?

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Problem 15Multiple Choice

What role does oxygen play in the citric acid cycle?

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Problem 16Multiple Choice

Which step in the citric acid cycle involves the release of CO2 and the production of NADH?

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Problem 17Multiple Choice

How does the isomerization of citrate to isocitrate facilitate the citric acid cycle?

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Problem 18Multiple Choice

Evaluate the impact of inhibiting oxidation reactions in the citric acid cycle.

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Problem 19Multiple Choice

Which enzyme catalyzes the conversion of citrate to isocitrate?

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Problem 20Multiple Choice

In a cell with a high demand for ATP, how might the citric acid cycle be regulated?

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Mitochondria Practice Problems Electron Transport Practice Problems

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