1. Do Now: Take out notebook and pencil
Explain how our bodies break down molecules and form new ones.
Include which molecules we break down and which ones we form

2. Cell Reproduction Engage Video

3. Reproduction Explore Activity
Follow the Explore It! Card in order
Use the 3 organisms card sheet to answer the questions

4. Glue notes page on to page

5. Chromosomes- thread like molecules that carry DNA
Genes- made of DNA, each person has 2 copies of each gene, one from each parent
DNA- deoxyribonucleic acid, contains instructions organisms need to develop and reproduce
Chromosomes- thread like molecules that carry DNA

6. Asexual Reproduction- offspring arise from a single organism, done through mitosis
Genes inherited from only one parent, so offspring is genetically identical to the parent

7. Types of Asexual Reproduction
Binary Fission- single celled organisms, parent cell splits into 2 halves making 2 new cells
Budding- offspring grows out of the body of the parent

8. Types of Asexual Reproduction
Fragmentation- parent body breaks into pieces and each piece can then produce offspring
Regeneration- a piece of parent body is detached and then grows into completely new offspring

9. Advantages Disadvantages
Good for non-mobile organisms, numerous offspring with little energy spent, quick
Disadvantages
No variation in genetics, weaknesses of parents shared, hard to adapt to environment changes

10. Sexual Reproduction
Offspring arise from two parents, need sperm from male father and an ovum from female mother
These cells form from meiosis, each cell contains 23 pairs of chromosomes
Offspring appearance varies because of the pairing of chromosomes from both parents

11. Advantages of Sexual Reproduction
Genetic variation so easy to adapt to environment
More protected from parent weaknesses, bad genes removed
Disadvantages of Sexual Reproduction
Must find mate, process takes longer, fewer offspring

12. Mitosis- type of cell division, results in 2 daughter cells with identical genetic makeup
4 Phases, occurs in strict cell cycle order

13. Prophase- first phase
Chromosomes become visible and spindle fibers begin to form, nuclear membrane disappears and chromosomes replicate and form sister chromatids

14. Metaphase- second phase
Spindle fibers attached to chromosomes line up the chromosomes in middle of cell

15. Anaphase- third phase
Spindle fibers pull apart the sister chromatids pulling the chromosomes away from each other to each end of the cell

16. Telophase- fourth and final stage
Chromosomes are pulled completely apart to each cell end, two new nuclear envelopes form around the two sets of chromosomes
Cell divides into 2 exact copies each with a set of chromosomes

17. Interphase- in-between phase, in the middle of 2 separate cell cycles
Chromatin unwinds, cell grows

18. Meiosis- cell division that occurs in 2 sets of divisions
Reduces number of chromosomes by half, produces 4 sex cells
Similar process as mitosis, except chromosomes cross over, which causes mixing of genes

19. Video

20. Create 2 Venn Diagrams
One comparing and contrasting sexual reproduction and asexual reproduction
The second will compare and contrast mitosis and meiosis