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The Human Organism and the Perpetuation of Life
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Write the black, read the red
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WHAT DO YOU KNOW ABOUT CELLS?
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Follow in workbook pg. 67
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The Cell building blocks of all living organisms.
Start= all the same, become specialized.
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Use pg. 127 of your textbook to help you fill in the cell diagram
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Homework: Workbook pg. 68
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DNA (DeoxyriboNucleic Acid)
DNA = a double helix molecule located in the cell’s nucleus when straightened looks like a ladder.
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2 base pairs = a nucleotide
adenine thymine guanine cytosine order = determines the genetic information
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Label diagram on pg. 69 of workbook
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A genome = complete set of genetic information
The Human Genome A genome = complete set of genetic information In humans = approximately 3 billion base pairs
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Genes
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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
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Genetic Diversity variation of genes = e.g. blue, brown eyes
Only identical twins are genetically identical Prevents extinction of a species
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More individuals in a population = greater the genetic diversity (larger gene pool)
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The smaller the gene pool, the more genetic abnormalities
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Crash course heredity
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Homework: Workbook pg. 70
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Discussion: Textbook Pg 152, Questions 1-7
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Cell Division
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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
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Chromosomes Has genetic material from father and mother
23 pairs = total of 46 chromosomes (2n, or diploid)
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Chromosomes Human Cells contain 23 pairs of chromosomes
Tightly coiled DNA strand gives the chromosome its recognizable shape
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Caryotype of a male Caryotype of a female
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(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
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Fill in Workbook pg. 71 and the handout using pg. 134 of textbook
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Stages of Mitosis film
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mitosis models
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Mitosis splitting up is hard
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Meiosis (sex cell division)
division of certain cells = produce sperm and ovum (gametes) Gives 4 daughter cells, each with 23 chromosomes (n or haploid)
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Meiosis film
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Fill in workbook pg. 72 using pg. 135 of textbook
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Daughter cell comparison
Mitosis Meiosis 23 pairs of chromosomes 2n diploid 2 daughter cells produced 23 chromosomes n Haploid 4 daughter cells produced
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Homework: workbook pg. 73 & 74
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Discussion: textbook Pg. 152, questions 8-15
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Movie Meiosis- where the sex starts
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Reading: birth order Get into groups according to your birth order
Read your section only Does it describe you?
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Cellular Specialization
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Follow on pg. 75 of workbook
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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
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Tissues Epithelial tissue:
Function: Covers & protects organs (inside and out) E.g. skin, lining of stomach, lining of lungs, etc.
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Connective tissue: Function: Binds & supports tissues and organs, provides protection & nutrients E.g. tendons, cartilage, blood, bones, fat
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Nervous tissue: Function: Control and guide body activity, transmit messages E.g. brain, spinal cord, nerves
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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
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Organ Systems group of organs and tissues that work together to perform a task. e.g. The respiratory system
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Discussion: Textbook Pg. 153, questions 16-18
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Homework: Workbook pg. 76
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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.
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Cancer, Uncontrolled Cell Divisions
Read the article on page 156 and answer the questions at the bottom.
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Study questions: workbook pg. 85-86, questions 1-11
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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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