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The Human Organism and the Perpetuation of Life

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Presentation on theme: "The Human Organism and the Perpetuation of Life"— Presentation transcript:

1 The Human Organism and the Perpetuation of Life

2 Write the black, read the red

3 WHAT DO YOU KNOW ABOUT CELLS?

4 Follow in workbook pg. 67

5 The Cell building blocks of all living organisms.
Start= all the same, become specialized.

6 Use pg. 127 of your textbook to help you fill in the cell diagram

7 Homework: Workbook pg. 68

8 DNA (DeoxyriboNucleic Acid)
DNA = a double helix molecule located in the cell’s nucleus when straightened looks like a ladder.

9 2 base pairs = a nucleotide
adenine thymine guanine cytosine order = determines the genetic information

10 Label diagram on pg. 69 of workbook

11 A genome = complete set of genetic information
The Human Genome A genome = complete set of genetic information In humans = approximately 3 billion base pairs

12 Genes

13 Genes = a section of DNA with genetic information required for a particular job. small differences between each of our genes, making us all different Human and Chimpanzee = 99% identical

14 Genetic Diversity variation of genes = e.g. blue, brown eyes
Only identical twins are genetically identical Prevents extinction of a species

15 More individuals in a population = greater the genetic diversity (larger gene pool)

16 The smaller the gene pool, the more genetic abnormalities

17 Crash course heredity

18 Homework: Workbook pg. 70

19 Discussion: Textbook Pg 152, Questions 1-7

20 Cell Division

21 Cell Division The process to produce new cells Purpose:
increase cell count (grow) regenerate damaged/broken tissue sexual reproduction Cells not dividing all the time = interphase

22 Chromosomes Has genetic material from father and mother
23 pairs = total of 46 chromosomes (2n, or diploid)

23 Chromosomes Human Cells contain 23 pairs of chromosomes
Tightly coiled DNA strand gives the chromosome its recognizable shape

24 Caryotype of a male Caryotype of a female

25 (standard cell division)
Mitosis (standard cell division) Before cell divides = copies all DNA bases = proper sequence until 2 identical strands. DNA strands = unzipped like a zipper

26 Fill in Workbook pg. 71 and the handout using pg. 134 of textbook

27 Stages of Mitosis film

28 mitosis models

29 Mitosis splitting up is hard

30 Meiosis (sex cell division)
division of certain cells = produce sperm and ovum (gametes) Gives 4 daughter cells, each with 23 chromosomes (n or haploid)

31 Meiosis film

32 Fill in workbook pg. 72 using pg. 135 of textbook

33 Daughter cell comparison
Mitosis Meiosis 23 pairs of chromosomes 2n diploid 2 daughter cells produced 23 chromosomes n Haploid 4 daughter cells produced

34 Homework: workbook pg. 73 & 74

35 Discussion: textbook Pg. 152, questions 8-15

36 Movie Meiosis- where the sex starts

37 Reading: birth order Get into groups according to your birth order
Read your section only Does it describe you?

38 Cellular Specialization

39 Follow on pg. 75 of workbook

40 Tissues ,Organs and Systems
Our cells = specialized but work together Tissues = Cells with common function Organs= structure made of various tissues with specific function Systems= group organs and tissues working together

41 Tissues Epithelial tissue:
Function: Covers & protects organs (inside and out) E.g. skin, lining of stomach, lining of lungs, etc.

42 Connective tissue: Function: Binds & supports tissues and organs, provides protection & nutrients E.g. tendons, cartilage, blood, bones, fat

43 Nervous tissue: Function: Control and guide body activity, transmit messages E.g. brain, spinal cord, nerves

44 Function: contract & regain shape =making body move
Muscular tissue: Function: contract & regain shape =making body move e.g. heart, internal organs, skeletal muscles Some voluntary- skeletal Some involuntary- internal organs, brain

45 Organ Systems group of organs and tissues that work together to perform a task. e.g. The respiratory system

46 Discussion: Textbook Pg. 153, questions 16-18

47 Homework: Workbook pg. 76

48 Build a Concept Map Using the the words on page 155 to fill in concept maps 1-3 for Chapter 5 of your textbook. You can use your notes too.

49 Cancer, Uncontrolled Cell Divisions
Read the article on page 156 and answer the questions at the bottom.

50 Study questions: workbook pg. 85-86, questions 1-11

51 Cells and tissues colouring
Colour the diagram according to the cell and tissue type All similar letters get coloured the same colour E.g. This handout shows individual epithelial cells, a small group of epithelial cells, and epithelial tissue. They all get coloured the same colour


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