Question

without checkpoints:

• cells could divide with damaged dna
• chromosomes could be unevenly distributed
• cells could become abnormal

this can lead to uncontrolled cell division, which is linked to cancer.

1. complete the sentence:

cell cycle checkpoints help protect organisms by...
escriba una respuesta

Explanation:

Cell cycle checkpoints monitor the cell cycle to ensure accurate DNA replication, proper chromosome segregation, and overall cell health. By doing so, they prevent cells with damaged DNA, unevenly distributed chromosomes, or abnormal characteristics from dividing uncontrollably. This protection helps maintain the integrity of the organism's cells, preventing issues like cancer (as hinted in the text about uncontrolled cell division linked to cancer) and ensuring normal growth, development, and function. So the sentence should be completed by stating that cell cycle checkpoints help protect organisms by ensuring that cells divide only when conditions are favorable (or preventing abnormal cell division, maintaining genomic stability, etc.). A suitable completion is "ensuring that cells divide only when conditions are favorable (or preventing abnormal cell division, maintaining genomic stability, etc.)" (a more precise biological answer would be something like "maintaining genomic integrity and preventing uncontrolled cell division (which can lead to cancer and other disorders)").

Answer:

Cell cycle checkpoints help protect organisms by ensuring that cells divide only when conditions are favorable (or preventing abnormal cell division, maintaining genomic stability, etc.) (a more precise biological answer: "maintaining genomic integrity and preventing uncontrolled cell division (which can lead to cancer and other disorders)")