Exploring the Cell Cycle and Mitosis

Dr. Sammy introduces the concept of cells as co-stars in our life story, explaining the cell cycle and its phases: interphase, mitosis, and cytokinesis. The video covers how cells divide for growth and repair, the role of checkpoints in the cell cycle, and the consequences of cell cycle control failure, such as cancer. The episode concludes with a teaser for the next topic on meiosis.

How many cells act as co-stars in the story of our life?

• About 37 thousand

• About 37 trillion

• About 37 million

• About 37 billion

What triggers a flurry of cell division to repair a skin injury?

• Drinking water

• Getting a cut or scrape

• Eating healthy food

• Sleeping well

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During which phase do cells spend 90% of their time?

• G1 phase

• Mitotic phase

• Interphase

• Cytokinesis

What does the G0 phase signify for a cell?

• It is about to divide

• It is preparing for DNA replication

• It is in a state of active division

• It has exited the cell cycle and is not dividing

What is the purpose of the S phase in the cell cycle?

• DNA replication

• Cell growth

• Cell division

• Protein synthesis

What happens during cytokinesis in plant cells?

• A new wall is formed in the middle

• Spindle fibers form

• The cell membrane cinches in

• Chromosomes are replicated

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What mnemonic helps remember the phases of mitosis?

• Please Make Another Tea, Chef

• Pass My Anatomy Test, Coach

• Pass Me A Taco, Chef

• Please Move Aside, Tiny Cells

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What is the significance of the mitotic spindle?

• It helps in DNA replication

• It synthesizes proteins

• It organizes the cell's organelles

• It assists in chromosome alignment and separation

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What is the role of checkpoints in the cell cycle?

• To ignore DNA damage

• To stop the cell cycle if necessary

• To speed up cell division

• To ensure cells divide uncontrollably

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What can cause cancer cells to form?

• Drinking plenty of water

• Eating vegetables

• A breakdown in the cell cycle control system

• Regular exercise

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