Long Test 5

Chromosomes are duplicated during what stage of the cell cycle?

• G₁ phase

• prophase

• prometaphase

• S phase

Which of the following events does not occur during some stages of interphase?

• DNA duplication

• increase in cell size

• organelle duplication

• separation of sister chromatids

The mitotic spindle arise from which cell structure?

• centromere

• centrosome

• cleavage furrow

• kinetochore

Attachment of the mitotic spindle fibers to the kinetochore is a characteristic of which stage of mitosis?

• anaphase

• metaphase

• prometaphase

• prophase

Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis?

• anaphase

• metaphase

• prometaphase

• telophase

Separation of the sister chromatids is a characteristic of which stage of mitosis?

• anaphase

• metaphase

• prometaphase

• telophase

The chromosomes become visible under a light microscope during which stage of mitosis?

• anaphase

• metaphase

• prometaphase

• prophase

The fusing of Golgi vesicles at the metaphase plate of dividing plant cells forms what structure?

• actin ring

• cell plate

• cleavage furrow

• mitotic spindle

What is the main prerequisite for clearance at the G₂ checkpoint?

• cell has reached a sufficient size

• an adequate stockpile of nucleotides

• accurate and complete DNA replication

• proper attachment of mitotic spindle fibers to kinetochores

If the M checkpoint is not cleared, what stage of mitosis will be blocked?

• anaphase

• metaphase

• prometaphase

• prophase