DNA Replication

The video explains the process of cell division, starting from a single cell called a zygote. It highlights the importance of cell division for growth, repair, and asexual reproduction. The video delves into DNA replication, describing the structure of DNA and the role of enzymes like helicase and polymerase. It compares DNA replication with transcription, noting their similarities and differences. The video concludes with a recap of the key points discussed.

What is the primary purpose of cell division in humans?

• To eliminate waste

• To produce energy

• To repair and grow tissues

• To create new species

How many pairs of chromosomes are found in a human body cell before division?

• 46 chromosomes

• 23 chromosomes

• 46 pairs

• 23 pairs

Which enzyme is responsible for unzipping the DNA strands during replication?

• Ligase

• DNA helicase

• RNA polymerase

• DNA polymerase

What is the complementary base pair for adenine (A) in DNA?

• Uracil (U)

• Cytosine (C)

• Guanine (G)

• Thymine (T)

In what way does transcription differ from DNA replication?

• Transcription occurs in the cytoplasm

• Transcription results in two identical DNA molecules

• Transcription produces RNA, not DNA

• Transcription uses DNA polymerase