Cell Division: Mitosis and Meiosis Explained

The video tutorial by Mrs. Singer Li covers the topic of cell division, explaining its importance for growth, repair, and reproduction. It distinguishes between asexual and sexual reproduction, highlighting the processes of mitosis and meiosis. The tutorial delves into the structure of chromosomes, DNA replication, and the phases of mitosis and meiosis, emphasizing the significance of genetic variation and the role of gametes. The video also touches on the implications of uncontrolled cell division, such as cancer.

What are the three main reasons cells divide?

• Growth, replacement, and repair

• Replacement, repair, and photosynthesis

• Growth, repair, and photosynthesis

• Growth, photosynthesis, and reproduction

In asexual reproduction, how many parents are involved?

• One

• Four

• Two

• Three

What is the process called when DNA is copied exactly before cell division?

• Mutation

• Replication

• Translation

• Transcription

During which phase of the cell cycle is DNA replicated?

• M phase

• G2 phase

• S phase

• G1 phase

What is the final step of mitosis where the cytoplasm divides?

• Prophase

• Metaphase

• Anaphase

• Cytokinesis

What is the term for uncontrolled cell division that can lead to tumors?

• Apoptosis

• Cancer

• Meiosis

• Mitosis

How many chromosomes do human diploid cells have?

• 92

• 69

• 46

• 23

What is the main purpose of meiosis?

• Growth

• Asexual reproduction

• Repair

• Sexual reproduction

How many daughter cells are produced at the end of meiosis?

• Three

• Two

• Four

• One

What is the term for the exchange of genetic material between homologous chromosomes during meiosis?

• Independent assortment

• Crossing over

• Replication

• Segregation