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Biology The study of Life!

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Presentation on theme: "Biology The study of Life!"— Presentation transcript:

1 Biology The study of Life!

2 What is Biology? Biology is the study of all living things
Living things are called organisms Organisms include bacteria, protists, fungi, plants, & animals

3 All Living Things Share Common Characteristics
Cells Reproduction Metabolism Homeostasis Heredity Evolution Interdependence

4 Characteristics of Organisms

5 All Organisms are made of Cells

6 Facts About Cells Cells are the smallest living unit of an organism
All cells contain: Cytoplasm Cell Membrane DNA Ribosomes Cytoskeleton

7 More Cell Facts Cells are complex & highly organized
Cells have parts called organelles that do different jobs e.g. Chloroplasts in plants make sugars

8 Organisms are Grouped by their Number of Cells
Unicellular Organisms Living Organism Made Up Of One Cell Multicellular Organisms Living Organism Made Up Of Many, Specialized Cells

9 Reproduction process by which organisms make more of their kind

10 Sexual Reproduction Involves 2 parents
Egg fertilized by sperm to make a ZYGOTE Offspring DIFFERENT from parents

11 Asexual Reproduction Involves a single organism or cell Cell divides
Offspring IDENTICAL to parent

12 Metabolism Sum of all the chemical reactions in an organism
All require energy Sunlight is the ultimate energy for life on Earth

13 Metabolism All living things use energy to run the process of life.
All living things use energy to grow, to move, and to process information. Examples: Photosynthesis, Cellular Respiration, Digesting food

14 Homeostasis Keeping the internal environment of the cell or organism within the ranges required for life Stable internal conditions of pH, temperature, water balance, etc. Maintaining a balance

15 Heredity The passing of traits from parent to offspring

16 Heredity Gene is the basic unit of heredity.
DNA carries the genetic code for all organisms All organisms contain DNA

17 Evolution Change over time
Groups Of Organisms (Not Individuals) Change Over Time In Order To Survive Within Changing Environments. Fossil records show changes in groups of organisms

18 Interdependence organisms are dependent on one another and their environment Ecology – the study of the interactions of organisms with one another and with the non-living part of their environment

19 Life is Organized on Several Levels

20 Levels Atoms Molecules Organelles Cells – life starts here Tissues
Organs System Organism

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