Cell Cycle and Cell Division Lecture Quiz

The two kinds of cell division mentioned in the text are mitosis and meiosis. Mitosis is the most common form of cell division, forming all the cells in our bodies except the sex cells. Meiosis occurs in the sex organs and produces sex cells or gametes, which contain only half the original number of chromosomes.

Human body cells have 46 chromosomes in 23 pairs called homologous pairs, making them diploid cells. Sex cells have 23 chromosomes, making them haploid cells.

Cells need to divide in most parts of the body so that organisms can grow and replace old or damaged cells. The cells produced by this type of cell division should be exactly the same as the cells they are replacing.

<p>During cell division, DNA replication and cell growth occur together. Although cell growth is a continuous process, DNA synthesis occurs only during one specific stage in the cell cycle.</p> Signup and view all the answers

<p>When male and female gametes join together at fertilization, the resulting cell, called a zygote, will contain the full set of chromosomes and can then divide and grow into a new individual.</p> Signup and view all the answers