Cell Biology Mitosis DNA RNA Mitosis Cell Reproduction

Cell Biology Mitosis, DNA, RNA

Mitosis (Cell Reproduction) This is the process of cell division resulting in the production of 2 daughter cells from a single parent cell. p The daughter cells are identical to one another and to the parent cell. p Happens during growth or repair. p Mitosis is divided into 4 main stages: p Prophase M etaphase A naphase Telophase p

Prophase n Metaphase 1) Prophase n p Chromosomes are duplicated (become 2 sisters) 2) Metaphase (Middle phase) n Chromosomes are aligned in the middle of the cell

Anaphase and Telophase 3) Anaphase n p The paired chromosomes separate and move to the opposite sides of the cell. 4) Telophase n Cell membrane pinches inwards, forming two daughter cells

Mitosis Video clips p Mitosis TPRs p http: //www. youtube. com/watch? feature= player_detailpage&v=3 kp. R 5 RSJ 7 SA p http: //www. cellsalive. com/mitosis. htm

Plant Cell v/s Animal Cell p Has a LARGE vacuole Has small vacuoles Has a CELL WALL Does NOT have a cell wall Has a rectangular shape Has a oval shape

Which set of drawing shows what happens to cells in plant root tips during growth?

DNA and RNA Is the hereditary material in all organisms located in the cell nucleus. p Information in DNA is stored in 4 bases: p n n A – Adenine T – Thymine C – Cytosine G – Guanine A and T always form a base unit (AT & T) C and G form another base unit

DNA video clip p http: //learn. genetics. utah. edu/content/be gin/tour/ Remember p A always pairs with T p C and G go together p

Remember AT & T, C with G G T T C

Remember AT & T, C with G T C A A G G T T C 3’ AGTTC 5’

Now for RNA p p p RNA is similar to DNA except that ‘T’ is replaced by ‘U’ or Uracil. To convert DNA to RNA Step 1: Replace C with G, G with C, A with T and T with A. Step 2: Replace only ‘T’ with ‘U’ What is the RNA molecule coded from the DNA molecule ATGCGC? T A C GCG UACGCG Step 1 Step 2

Find the RNA molecule For the DNA molecule Step 1 Step 2 A G T T C A G U U C http: //www. youtube. com/watch? v=v. JSm. Z 3 Dsnt. U

Review p Mitosis n n Prophase, Metaphase, Anaphase and Telophase Difference between Animal and Plant cells p RNA transcription p Complete the worksheet on Mitosis and DNA