THE LIFE OF SCIENCE the science of life.pptx

THE LIFE OF SCIENCE

1. THE LIFE OF SCIENCE CHAPTER 1 Pg # 1 By Naina Kalra O’ level Biology

2. 1.1. What is Biology? What leads to study of living things? Definition: Biology is the science of life Involves the study of living things and world of life Greek word Bios- life Logos – knowledge Biologists study Biology Curiosity ? ?

3. What is Biology? Questions biologists seek to answer What is life? Difference between living and non-living things How many types of living things exist in world How do they function Organism – living things Biologist choose to study a particular organism at a time

4. What is Biology? Biologist choose to study a particular organism at a time Study questions include What this organism is made up of? How does this function Where does it live and why? –Habitat How does it interact with other organisms and surroundings? Answer above-mentioned questions for the simplest organism Amoeba.

5. What is Biology? In this particular chapter, the organism of focus is “HUMAN BEINGS” What is human body made of? How does it function/works when it is healthy and when it is sick Where do they live – requirements How other organisms can affect human life and how humans can affect other organisms Also, similarities with other organisms – as all living things share characteristic of life

6. 1.2. Characteristics of Life Cells Nutrition Respiration Excretion Growth and development Movement Reproduction Sensitivity Adaptability

7. Cells All living organisms are composed of cells – simplest unit of life Cells carry out activities necessary for survival e.g., leaf cells carry out photosynthesis Non-living cells are not made up of cells