IMAT - International Medical Admissions Cellular Biology and Division Questions and Answers

Question 1

A scientist is studying a cell that has just passed the G1 checkpoint. Which of the following processes is the cell now irreversibly committed to?

Accepted Answer

Replicating its DNA

Answer

Synthesizing proteins for mitosis

Answer

Undergoing cytokinesis

Answer

Entering the G0 resting phase

Question 2

Which of the following correctly describes a key difference between mitosis and meiosis?

Accepted Answer

Mitosis is involved in growth and repair, while meiosis produces gametes for sexual reproduction.

Answer

Mitosis results in four genetically distinct haploid cells, while meiosis produces two identical diploid cells.

Answer

Crossing over between homologous chromosomes occurs only during prophase of mitosis.

Answer

Both processes consist of two rounds of nuclear division.

Question 3

A new drug is developed that inhibits the function of the Golgi apparatus. A cell treated with this drug would be unable to properly perform which of the following functions?

Accepted Answer

Modifying, sorting, and packaging proteins and lipids

Answer

Synthesizing lipids and detoxifying poisons

Answer

Generating ATP through cellular respiration

Answer

Replicating DNA before cell division

Question 4

During which phase of meiosis do homologous chromosomes separate and move to opposite poles of the cell?

Accepted Answer

Anaphase I

Answer

Anaphase II

Answer

Prophase I

Answer

Metaphase II

Question 5

A patient is diagnosed with a condition where their cells are unable to break down and recycle waste products, leading to an accumulation of cellular debris. This condition is most likely caused by a malfunction in which organelle?

Accepted Answer

Lysosomes

Answer

Ribosomes

Answer

Mitochondria

Answer

The nucleus

Question 6

Which of the following is assessed at the M (spindle) checkpoint during the cell cycle?

Accepted Answer

Whether all sister chromatids are correctly attached to the spindle microtubules

Answer

Whether the DNA has been completely replicated without damage

Answer

Whether the cell is large enough to divide

Answer

Whether there are sufficient growth factors to stimulate division