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

4. DNA, Chromosomes, and Genomes

Transposons and Viruses

Cell Biology

4. DNA, Chromosomes, and Genomes

Transposons and Viruses

Previous problemNext problem

Struggling with Cell Biology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following is not considered a mobile genetic element?

DNA transposons

SINEs

Transposase

Retrotransposons

Previous problemNext problem

Verified step by step guidance

Understand the concept of mobile genetic elements: Mobile genetic elements are sequences of DNA that can change their position within the genome. They include transposons, retrotransposons, and SINEs (Short Interspersed Nuclear Elements).

Identify the role of DNA transposons: DNA transposons are a type of mobile genetic element that can move around the genome by a 'cut and paste' mechanism, facilitated by the enzyme transposase.

Recognize the function of SINEs: SINEs are short DNA sequences that can move within the genome. They are considered non-autonomous retrotransposons because they rely on other elements for their movement.

Understand retrotransposons: Retrotransposons are mobile genetic elements that move within the genome through an RNA intermediate, using a 'copy and paste' mechanism.

Clarify the role of transposase: Transposase is an enzyme that facilitates the movement of DNA transposons. It is not a mobile genetic element itself but rather a protein that assists in the mobility of transposons.