Question

Which of the following explains why normal cells grown in a petri dish tend to stop growing once they have covered the bottom of the dish?answer choicesThe cells lack cyclinPetri dish and inhabits cell growthContact with other cells stop cell growthMost cells grown in Petri dishes have a defective p53

Answer 1

Answer: Contact with other cells stop cell growth

Step-by-step explanation:

Normal cells grown in a petri dish tend to stop growing once they have covered the bottom of the dish because they have reached a state known as contact inhibition. This is a phenomenon where cells stop growing and dividing once they come into contact with other cells and form a confluent layer. This is a mechanism that prevents cells from overgrowing and forming tumors. This process is regulated by contact-dependent signaling pathways, where the cells sense their environment and respond by slowing or stopping their growth and division.