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Cells & DNA Make a foldable to organize your notes

Cells & DNA Make a foldable to organize your notes

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Page 1: Cells & DNA Make a foldable to organize your notes

Cells & DNAMake a foldable to organize your

notes

Page 2: Cells & DNA Make a foldable to organize your notes

http://web.jjay.cuny.edu/~acarpi/NSC/13-cells.htm

Page 3: Cells & DNA Make a foldable to organize your notes

DQ: Warm-up Question

List the components of the cell that control traits from smallest to largest.

Cells

Page 4: Cells & DNA Make a foldable to organize your notes

Searching for DNA? (pp. 42-43)

• The DNA of a cell is organized into structures called chromosomes.

• Body cells have 23 pairs (46 total)

• One half the genetic instructions comefrom the father, the other ½ from the mother

• Made up of approximately 60,000 genes

• Genes control traits

Page 5: Cells & DNA Make a foldable to organize your notes

Chromosomes p. 43 & 91

http://www.tutorvista.com/content/biology/biology-iii/chromosomes/chromosomes-structure.phphttp://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1054885

Page 6: Cells & DNA Make a foldable to organize your notes

Boy or Girl? P. 73

Page 7: Cells & DNA Make a foldable to organize your notes

DNAp. 89

• DNA Molecule– Sugars outer frame of “ladder”

• Nitrogen bases for rungs of “ladder”– Adenine Guanine– Cytosine Thymine

• The Order of the bases determines the genetic code.

Page 8: Cells & DNA Make a foldable to organize your notes

• Chromosomes are made of twisted strands of DNA.

• Chromosomes are in the nucleus.

• The nucleus is in the cell.

• Organisms are made of millions of cells.

Page 9: Cells & DNA Make a foldable to organize your notes

Mitosis pp. 44-45

• Process of cell duplication in body cells.

• Purpose: Growth and Repair

• Exact copy of the original cell is made

• Then it divides into 2http://www.biology.arizona.edu/Cell_bio/tutorials/cell_cycle/cells3.htmlhttp://www.cellsalive.com/mitosis.htm

Page 10: Cells & DNA Make a foldable to organize your notes

Meiosis pp. 70-71

• The process of cell duplication in sex cells• Purpose: reproduction• Chromosomes separate and go into 2 different

cells• Egg & sperm cells have ½ as many

chromosomes as body cells.

http://www.biology.arizona.edu/CELL_BIO/tutorials/meiosis/meiosis1_movie.htmlhttp://www.cellsalive.com/meiosis.htm

Page 11: Cells & DNA Make a foldable to organize your notes

X X

X XX X

X X

/ /

/ /

X X

X X

\ \

\ \

Mom

Egg Cell

Sperm Cell

½ of the genes come from mother

½ of the genes come from father

Dad