Question

what is the outcome when a cell detects errors during mitosis and triggers apoptosis?
a. the cell accelerates its division to complete mitosis faster.
b. the cell corrects the errors and continues to divide.
c. the cell ignores the errors and remains in the mitotic phase.
d. the cell undergoes programmed cell death to prevent potential harm.

what can result from the improper distribution of chromosomes during mitosis in an embryo?
a. reduced cell size
b. enhanced tissue growth
c. developmental abnormalities or birth defects
d. increased mitotic rate

Explanation:

• First question: Apoptosis is programmed cell death. When a cell detects errors during mitosis and triggers apoptosis, it is to prevent potential harm (like becoming a cancer - like cell). Option a is incorrect as apoptosis is not about accelerating division. Option b is wrong because if apoptosis is triggered, the cell does not continue to divide after correcting (apoptosis is a form of cell death). Option c is incorrect as ignoring errors and remaining in mitosis would be dangerous and is not what apoptosis is for.
• Second question: Improper distribution of chromosomes during mitosis in an embryo can lead to cells with incorrect genetic material. This can result in developmental abnormalities or birth defects. Option a (reduced cell size) is not a direct result of improper chromosome distribution. Option b (enhanced tissue growth) is incorrect as improper chromosome distribution is more likely to cause problems rather than enhanced growth. Option d (increased mitotic rate) is not related to improper chromosome distribution in terms of its main consequence.

Answer:

• First question: d. The cell undergoes programmed cell death to prevent potential harm.
• Second question: c. Developmental abnormalities or birth defects.