Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

26. Nucleic Acids and Protein Synthesis

Steps of DNA Replication

GOB Chemistry

26. Nucleic Acids and Protein Synthesis

Steps of DNA Replication

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Multiple Choice

Which of the following statements correctly describes the difference between the leading and the lagging strands of DNA during DNA replication?

The leading strand is synthesized by adding nucleotides to the 3' end of the growing strand, and the lagging strand is synthesized by adding nucleotides to the 5' end.

The leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.

The lagging strand is synthesized continuously, whereas the leading strand is synthesized in short fragments that are ultimately stitched together.

The leading strand slows its rate of replication so that the lagging strand can catch up.

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Verified step by step guidance

Understand the basic concept of DNA replication: DNA replication involves the synthesis of new DNA strands from a template strand. This process occurs at the replication fork, where the DNA double helix is unwound.

Identify the directionality of DNA strands: DNA strands have directionality, characterized by a 5' to 3' orientation. Nucleotides are added to the 3' end during synthesis.

Differentiate between leading and lagging strands: The leading strand is synthesized continuously in the same direction as the replication fork movement, while the lagging strand is synthesized in short fragments called Okazaki fragments, in the opposite direction.

Clarify the synthesis process: The leading strand is synthesized smoothly and continuously, whereas the lagging strand requires multiple starts and stops, resulting in fragments that are later joined by DNA ligase.

Evaluate the statements: Based on the understanding of DNA replication, identify the correct statement that describes the synthesis direction and process of the leading and lagging strands.