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15 Cards in this Set

  • Front
  • Back
Order of the cell cycle
What happens during prophase?
Nuclear membrane disappears, chromosomes coil, assembly of spindle apparatus completed.
What happens during metaphase?
Chromosomes line up on the equatorial plate of the cell.
What happens during anaphase?
Fibers of spindle apparatus pull each other pair of sister chromatids apart, one goes to one side of the cell, the other goes to the other side.
What happens during telophase?
Nuclear membrane reforms. Chromosomes uncoil, spindle apparatus disassembled.
What are chromosomes made of? Where are they found?
Chromosomes are tiny "X" looking structures in a cell that package chromatids which are joined by Histones. Inside these chromatids are gentic sequences known as deoxyribonucleic acid. All of this is located in the nucleus.
What is a centromere?
The point on a chromosomes by which it is attached to a spindle fiber during cell division.
How many chromosomes are in a human body cell?
What are centrioles? What types of cells have them?
A minute cylindrical organelle near the nucleus in animal cells, occurring in pairs and involved in the development of spindle fibers in cell division.
What is the spindle?
the spindle is a network of microtubules which are basically long filaments which help assist movement.. These attach to the centromeres of the chromosomes and contract, pulling the separate chromatids on each side of the cell.
What is cytokinesis?
The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
What two things limit the size of cells?
Two things that limit the size of a cell are Surface area and Volume Surface.
What limits cell division?
The main things that limit the cell division is size. Cells cannot continue to divide if they have no room to do so. Certain cells need larger surface are to divide, while others can divide and take up very little room.
What is cyclin?
Any of a number of proteins associated the cycle of cell division that are thought to initiate certain processes of mitosis.
Define Cancer. What causes cancer?
The disease caused by an uncontrolled division of abandoned cells in a part of the body.