Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

7. Gene Expression

Transcriptional Regulators

Cell Biology

7. Gene Expression

Transcriptional Regulators

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Multiple Choice

Which of the following is not a DNA binding motif?

Zinc Finger

Leucine Zipper

Helix-loop-Helix

Helix-zipper-Helix

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Verified step by step guidance

Understand what a DNA binding motif is: A DNA binding motif is a structural domain within a protein that is responsible for binding to specific DNA sequences, allowing the protein to regulate gene expression.

Identify the common DNA binding motifs: Some well-known DNA binding motifs include Zinc Finger, Leucine Zipper, and Helix-loop-Helix. These motifs have specific structural features that facilitate DNA binding.

Analyze each option: Examine the structural characteristics of each motif to determine if it is known for binding to DNA.

Zinc Finger: This motif is characterized by the coordination of one or more zinc ions to stabilize its fold, allowing it to interact with DNA.

Leucine Zipper: This motif facilitates dimerization of two protein molecules, which then bind to DNA. Helix-loop-Helix: This motif is involved in dimerization and DNA binding. Helix-zipper-Helix is not a recognized DNA binding motif, making it the correct answer.