Cell Growth and Division

Formation of New Cells With a partner, come up with an explanation about how new cells develop inside of your body? If new cells do not develop inside your body explain why.

Formation of New Cells

Formation of New Cells

Formation of New Cells New cells are necessary for repair and growth, development, and reproduction.

Formation of New Cells DNA (deoxyribonucleic acid) tells your cells what to do, and when to do it. Located in the nucleus of cells.

Formation of New Cells by Cell Division Prokaryotic Cell reproduction Eukaryotic Cell reproduction

Prokaryotic Cell Reproduction Reproduce by a type of cell division called binary fission. Binary fission is a form of asexual reproduction that produces identical offspring.

Prokaryotic Cell Division Wait, NO SEX?? Amoeba asexually reproducing.

Asexual Reproduction

Eukaryotic Cell Reproduction DNA must replicate and the end result is 2 genetically identical cells.

Chromosomes

Chromosomes Composed of a cells DNA and associated proteins. Chromosome, chromatid, and centromere drawing.

How Chromosomes Affect Development Each human somatic cell (all cells except sperm and egg) has 2 copies of 23 different chromosomes for a total of 46 chromosomes. Each chromosome contains thousands o genes to keep you alive. You received a set from your biological mother and father.

Sets of Chromosomes

Chromosome

Chromosomes Homologous chromosomes- chromosomes that are similar in size, shape, and genetic content. Diploid-when a cell contains two sets of chromosomes. (46, somatic cells) Haploid- when a cell contains one set of chromosomes. Number of chromosomes represented by the letter n.

Mitosis vs. Meiosis Mitosis: Cell division for growth and development (our focus now) Meiosis: Cell division for production of gametes? Soo what’s a gamete?

Mitosis

Do all cells divide at the same rate? Why or why not?

The Cell Cycle Focus: What must happen for the cell cycle to occur.

The Cell Cycle The Cell Cycle Control of the Cell Cycle