Biology - Cell Division, Cancer, Meiosis

ASEXUAL REPRODUCTION

ASEXUAL REPRODUCTION

________: In single- celled organisms, mitosis is a way to reproduce.

Tumours

________ are mass of cancer cells that grow and divide.

Centrioles

________ used to move the chromosomes, migrate towards opposite ends of the cell " (the poles)

DNA

Sometimes ________ can mutate leading to uncontrolled cell growth (cancer)

Centromere

________- used to hold together the chromatids.

Plants

________ undergo a slightly different process, building up a new cell wall between the two halves of the nearly divided cell.

Humans

________ start with one cell and then cells divide at a rapid pace during pregnancy and continue after birth.

Simple fibres

________ begin to retract.

Nuclear membrane

________ begins to dissolve.

Genetic material

________ begins to re- condense.

Single fibres

________ connect to the centromeres of chromosomes.

Chromatids

________ reach the opposite pole.

number of chromosomes doesnt

The ________ determine the complexity.

process of mitosis

The ________ produces identical copies of the parent cell, but sometimes an identical copy is not desirable.

Different organisms

________ have different amounts.

Cell membrane

________ begins to pinch and form two cells.

Cells

________ can not simply grow in size; the distance of the nucleus from all parts of the cytoplasm must be kept small for efficient communication.

Gametic cells

________ must be haploid; thats to say, they must have half the number of chromosomes as somatic cells.

Cancer cells

________ divide at a faster rate than normal cells.

nuclear membrane

A(n) ________ begins to form around each set of chromatids.