AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which part of mitosis does this happen? A nuclear membrane forms around each group of chromosomes.
A
telophase
B
metaphase
C
prophase
D
anaphase
Explanation: 

Detailed explanation-1: -Finally, during telophase, a nuclear membrane forms around each set of chromosomes to separate the nuclear DNA from the cytoplasm.

Detailed explanation-2: -The nuclear envelope, including nuclear pore complexes, breaks down at the beginning of mitosis to accommodate the capture of massively condensed chromosomes by the spindle apparatus. At the end of mitosis, a nuclear envelope is newly formed around each set of segregating and de-condensing chromatin.

Detailed explanation-3: -During telophase, the chromosomes arrive at the cell poles, the mitotic spindle disassembles, and the vesicles that contain fragments of the original nuclear membrane assemble around the two sets of chromosomes. Phosphatases then dephosphorylate the lamins at each end of the cell.

Detailed explanation-4: -Answer and Explanation: During prophase in mitosis is when the nuclear envelope and nucleoli dissolve. Mitosis has several phases and the first phase is called prophase.

Detailed explanation-5: -Cytokinesis performs an essential process to separate the cell in half and ensure that one nucleus ends up in each daughter cell. Cytokinesis starts during the nuclear division phase called anaphase and continues through telophase.

There is 1 question to complete.