Characteristics of Living Things Section 1.3 Pages 18 & 19

8 Characteristics of Living Things Are based on a universal genetic code Grow and develop Respond to their environment Reproduce 5. Maintain a stable internal environment 6. Obtain and use material and energy 7. Taken as a group, living things evolve 8. Are made up of cells Movement?

Living things are based on a universal genetic code DNA is copied from parents to offspring. This includes the information needed to live, grow and reproduce

Living things grow and develop A single fertilized egg divides again and again Cell differentiate (cell specialization) This means the cells look different from one another and perform different functions

Living things respond to their environment Organisms detect and respond to stimuli (stimulus) from their environment Birds fly south for the winter

Living things reproduce Sexual reproduction Cells from two parents unite to form the first cell of a new organism Asexual reproduction A single organism produces offspring identical to itself

Living things maintain a stable internal environment Organisms need to keep their internal environment relatively stable, even when external conditions change dramatically homeostasis

Living things obtain and use material and energy All organisms need materials and energy to grow, develop, and reproduce. Metabolism is a chemical reaction where the material is either built up or broken down

Living things as a group, evolve Over generations, groups of organisms will evolve Evolution

Living things are made up of cells The smallest unit considered fully alive Cells can grow, respond to their surroundings, and reproduce.

Scientific Attitudes Section 1.2 Pages 10 & 14

Bias A bias is a particular preference or point of view that is personal, rather than scientific

Scientific Attitudes help scientist generate new ideas Curiosity Observation makes you wonder… Often leads to new questions Skepticism Question and explore existing ideas and hypothesis Design new experiments to double check/test it Open-mindedness Willingness to accept different ideas that may not agree with their hypothesis Creativity To design experiments Not peer reviewed

Big Ideas Section 1.3 Pages 20-21

Evolution Evolutionary theory is the central organizing principle of all biological and biomedical sciences Animals evolved into different shapes and sizes (more diverse) Different structures and functions are more efficient for a certain environment. Unity and diversity of life: organisms are fundamentally similar at the molecular level, it is used to build different structures

homeostasis The process when living things maintain a relatively stable internal environment

Fields of Biology different branches of Biology are interrelated Section 1.3 Pages 22-23

Global Ecology Biotechnology Scientists are aided by satellite technology and supercomputers. This helps us understand our global impact, which affects all life on earth Biotechnology Scientists try and correct or replace genes in humans, plants, etc. that may be defective

DNA is the information and heredity passed on from parent to offspring Genomics and Molecular Biology Focus on the study of DNA and other molecules (smallest objects that scientists study) inside cells. DNA is the information and heredity passed on from parent to offspring Paleontologists Study ancient life Use this information to organize a Tree of Life