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ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS The basis of life CONTENTS RESOURCES.

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Presentation on theme: "ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS The basis of life CONTENTS RESOURCES."— Presentation transcript:

1 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS The basis of life CONTENTS RESOURCES

2 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS CONTENTS Vital functions Biomolecules Cells History of cell discovery Size and shape Structure and composition Types of cells Cellular nutrition Autotrophic nutrition Heterotrophic nutrition Photosynthesis Cell division Genetic material Mitosis THE BASIS OF LIFE Cellular respiration Cellular respiration

3 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS RESOURCES Vital functions Biomolecules History of cell discovery Types of cells Structure and composition of cells Cellular nutrition Autotrophic nutrition Heterotrophic nutrition Cell division Genetic material Mitosis Size and shape of cells Cellular respiration Photosynthesis Links Introducing cells

4 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Vital functions NUTRITION INTERACTION REPRODUCTION VITAL FUNCTIONS Living beings

5 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Vital functions NUTRITION Living beings obtain the matter and energy necessary for life. Autotrophic organisms inorganic matter organic matter Heterotrophic organisms Living beings GO BACK

6 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Living beings Vital functions INTERACTION Living beings relate with their surrounding environment. Animals have receptors and effectors. Plants do not have receptors, but they can respond to stimuli. GO BACK

7 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Vital functions REPRODUCTION New individual living beings are produced. Asexual reproduction: one parent Sexual reproduction: male and female parents Living beings GO BACK

8 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS water mineral salts Biomolecules calcium, iron, magnesium, etc. Organic molecules

9 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS History of cell discovery 1675 Anthony van Leeuwenhoek microscope “animacules” He was the first person to use the word “cell”. He discovered tiny organisms in a drop of water Robert Hooke microscope cork under a microscope

10 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS History of cell discovery 1838 Matthias J. Schleiden and Theodor Schwann CELL THEORY The cell is the structural and functional unit of all living things Rudolf Virchow CELL THEORY All cells come from pre-existing cells.

11 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS microscope Size and shape of cells 1 micrometre (μm) equals millimetres (mm) cell

12 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Structure and composition of cells Animal cell Plant cell mitochondrion 1 cell membrane cytoplasm nucleus Golgi body 2 vacuoles 3 rough ER 4 chloroplast 5 cell membrane nucleus cell wall cytoplasm CLICK ON THE NUMBERS

13 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Types of cells bacteria Prokaryotic cells The genetic material is loose in the cytoplasm. NEXT

14 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Types of cells Eukaryotic cells The genetic material is enclosed in a nucleus. Animal cellPlant cell nucleus

15 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Cellular nutrition Amoeba nutrients CATABOLISM ANABOLISM

16 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Cellular nutrition CELLULAR METABOLISM Catabolism GO BACK complex organic substances simple substances energy

17 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Cellular nutrition METABOLISM Anabolism complex organic substances simple substances energy CELLULAR METABOLISM GO BACK

18 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Autotrophic nutrition CLICK ON NUMBERS

19 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS sunlight O 2 H 2 O CO 2 mineral salts Autotrophic nutrition simple organic matter GO BACK 1 Inorganic matter is taken in.

20 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS O 2 Autotrophic nutrition simple organic matter 2 energy Catabolism GO BACK

21 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS CO 2 Autotrophic nutrition 3 Carbon dioxide is expelled. GO BACK

22 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS other functions Autotrophic nutrition complex organic matter energy simple organic matter Anabolism 4 GO BACK

23 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Heterotrophic nutrition CLICK ON NUMBERS

24 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Heterotrophic nutrition 1 Organic matter is taken in. GO BACK simple organic matter

25 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Heterotrophic nutrition 2 simple organic matter Catabolism O 2 H 2 O CO 2 energy GO BACK

26 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Heterotrophic nutrition 3 Carbon dioxide is expelled. CO 2 GO BACK

27 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Heterotrophic nutrition 4 simple organic matter Anabolism energy complex organic matter other functions GO BACK

28 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS organic matter oxygen mineral salts water sunlight carbon dioxide Photosynthesis CO 2 H2OH2O O2O2 sunlight carbon dioxide water mineral salts organic matter oxygen CHLOROPLAST

29 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS MITOCHONDRION carbon dioxide water oxygen organic matter energy organic matter oxygen carbon dioxide water Cellular respiration CO 2 H2OH2O O2O2 energy

30 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Cell division parent cell UNICELLULAR ORGANISMS population growth MULTICELLULAR ORGANISMS growth daughter cells

31 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Cell division Binary fissionMultiple fission BuddingSporulation spores In fungi, algae, moss and ferns In some protozoa In yeast In bacteria and protozoa

32 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Karyotype of a human being 46 chromosomes Eukaryotic cell Genetic material nucleus chromatin Before cell division chromosomes

33 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Mitosis SEE PROCESS

34 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Mitosis GO BACK

35 ESSENTIAL NATURAL SCIENCE 2 Unit 1 HOMECONTENTS RESOURCES CLOSE BACK LINKS Links Introducing cells RR/SCIENCE/sciber00/7th/cell s/sciber/intro.htm Cell Inspector interactive activity m/activity/cell/cell.html Cells alive /3dcell.htm The virtual cell ll/textbook/chapter3/chapter3. htm The Virtual Cell Textbook ll/textbook/chapter2/chapter2. htm Cell growth and division bio1/


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