define cleavage furrow
Answers
Answer:
In cell biology, the cleavage furrow is the indentation of the cell's surface that begins the progression of cleavage, by which animal and some algal cells undergo cytokinesis, the final splitting of the membrane, in the process of cell division.
Explanation:
Hope it helps you
Answer:
A cleavage furrow is an indentation that appears in a cell’s surface when the cell is preparing to divide. It marks the beginning of the cell’s “pinching” its cell membrane and cytoplasm down the middle. Eventually, the cell will pinch itself completely in two, forming two daughter cells.
This furrow is created by the same proteins that allow muscle cells to contract: actin and myosin. These proteins, which have the ability to expand or contract, form a “contractile ring” that begins squeezing the cell along its middle.
Explanation:
The squeezing creates a drawstring effect, by this contractile ring until the opposite ends of the ring meet in the middle of the cell. At this point, the cell membrane fuses shut on either side of the contractile ring – creating the membranes of two new and independent cells.
Cleavage furrows are primarily found in animal cells and some algal cells. Plant cells, which have stiff, inflexible cell walls that cannot be easily bent or “pinched,” use a cell plate instead.
The cell plate grows a new cell wall from the middle of the cell outward to touch the edges, instead of pinching the cell membrane inward until it meets in the middle.
