Crash Course Cell Cycle

How many cellular co-stars does the narrator claim to have in their body?

• Around 50 billion cells

• Exactly 1 million cells

• Over 100 trillion cells

• About 37 trillion cells

What is the main purpose of cellular division in multicellular organisms like humans?

• To create new organisms

• To increase the size of cells

• To replace old or damaged cells

• To decrease the number of cells

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

• G1 phase

• Cytokinesis

• Mitotic phase

• Interphase

What is the mnemonic device used to remember the steps of mitosis?

• Pass Me A Taco, Chef

• Please Make Another Test, Child

• Please Meet At The Church

• Pass My Anatomy Test, Coach

What happens during the S phase of the cell cycle?

• Proteins are synthesized

• Cells divide into two

• Cells perform their specific functions

• DNA is replicated

What is the role of centrosomes during the cell cycle?

• They transport proteins

• They organize materials for cell division

• They replicate DNA

• They produce energy for the cell

What is the final step of mitosis before cytokinesis?

• Telophase

• Anaphase

• Metaphase

• Prophase

What is a key difference between cell division in plant cells and animal cells?

• Animal cells use a cell plate to divide

• Plant cells use a cleavage furrow to divide

• Plant cells build a wall to divide

• Animal cells do not undergo cytokinesis

What triggers the flurry of cell division to repair a skin wound?

• The activation of muscle cells

• A cut or scrape

• A signal from the brain

• The release of insulin

What can result from a failure in the cell cycle control system?

• Increased cell efficiency

• Decreased need for nutrients

• Uncontrollable cell division

• Faster healing of wounds