EARTH AND LIFE SCIENCE - EVOLVING CONCEPT OF LIFE

EARTH AND LIFE SCIENCE - EVOLVING CONCEPT OF LIFE

1. EVOLVING CONCEPT OF LIFE Based on Emerging Pieces of Evidence QUARTER 2

2. INTRODUCTION TO LIFE SCIENCE Life science is a collective of disciplines that is made up of theories and principles that tackles the structure and function of living things starting from the molecular level up to the entire ecosystems.

3. CHARACTERISTIC OF LIFE Organisms belonging to different kind share the following characteristics that allow us to identify that they are living: They are made up of cells. They grow and develop. They are capable of reproduction. They respond to their environment

4. TYPES OF ORGANISMS BASED ON CELL STRUCTURE EUKARYOTE any cell or organism that possesses a clearly defined nucleus. contains organelles ex. animals, plants, fungi and protists may be a unicellular (consists of one cell)or multicellular (consists of two or more cells)

5. TYPES OF ORGANISMS BASED ON CELL STRUCTURE any organism that lacks a distinct nucleus and other organelles due to the absence of internal membranes. bacteria and archea unicellular. Portfolio Olivia Wilson 5 PROKARYOTE

6. EUKARYOTE AND PROKARYOTES cell membranes cytoplasm DNA ribosomes Portfolio Olivia Wilson 6

7. HAVE YOU BEEN CURIOUS OF WHEN AND WHERE DID LIFE POSSIBLY START ON EARTH? During the 1800s geologist and naturalists found several forms of physical evidence that confirmed that earth is very old. we have three evidences for that

8. FOSSILS OF ANCIENT SEA LIFE ON DRY LAND FAR FROM OCEANS Portfolio Olivia Wilson 8 This supported the idea that the earth changed over time and some dry land today was once covered by oceans; Or what we call the TRILOBITES

9. THE MANY LAYERS OF ROCK Portfolio Olivia Wilson 8 Allowed the people to realize that rock layers represented the order in which rocks and fossils appeared, thus they were able to trace the history of earth and life on earth

10. THE INDICATIONS THAT VOLCANIC ERUPTIONS, EARTHQUAKES AND EROSION Portfolio Olivia Wilson 8 That happened long ago shaped much of the earth’s surface and supported the idea of an older earth.

11. Activity 2 : Why Should I Study History of Life? Directions: Write at least fifty-word reflection paper on: “Why should I study history of life?