EVERYDAY SCIENCE

SCIENCE

CELL BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The body cells of both plants and animals divide mitotically to produce identical cells. The stage at which the chromosomes are aligned exactly in the middle of the spindle, each attached to the spindle fibres (microtubule) is called.
A
Prophase
B
Metaphase
C
Anaphase
D
Interphase
Explanation: 

Detailed explanation-1: -All the chromosomes align at the metaphase plate (not a physical structure, just a term for the plane where the chromosomes line up). At this stage, the two kinetochores of each chromosome should be attached to microtubules from opposite spindle poles.

Detailed explanation-2: -Cytokinesis is the process following the division of the nucleus, the cytoplasm and plasma membrane are divided, resulting in two cells, each with its own nucleus and cytoplasm surrounded by a plasma membrane. It occurs in both plant cells and animal cells.

Detailed explanation-3: -Cytokinesis is the physical process that finally splits the parent cell into two identical daughter cells. During cytokinesis, the cell membrane pinches in at the cell equator, forming a cleft called the cleavage furrow.

Detailed explanation-4: -Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. These phases occur in this strict sequential order, and cytokinesis-the process of dividing the cell contents to make two new cells-starts in anaphase or telophase. The mitotic phase is a relatively short period of the cell cycle.

Detailed explanation-5: -During mitosis, a cell duplicates all of its contents, including its chromosomes, and splits to form two identical daughter cells.

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