Chapter 1 - Introduction: Exploring Life Get a Textbook

Chapter 1 - Introduction: Exploring Life GNS AP Biology Website

What is Science Chapter 1 - Introduction: Exploring Life NEW AIM: What is Science? What is Science Science is something that you do. It is a verb. It’s the process we use to try and know something. It is the only way to try to know something.

? How do we do science Chapter 1 - Introduction: Exploring Life AIM: What is Science? ? How do we do science

It’s all about making observations... Chapter 1 - Introduction: Exploring Life AIM: What is Science? It’s all about making observations... Ex. The structure of DNA

The observations: Chapter 1 - Introduction: Exploring Life AIM: What is Science? The observations: Phoebus Levene Russian Organic Chemist Rockefeller University 1928 One of the first models of DNA (the tetranucleotide)

The observations: Chapter 1 - Introduction: Exploring Life AIM: What is Science? The observations: Erwin Chargaff Austrian Biochemist Columbia University 1952

The observations: Chapter 1 - Introduction: Exploring Life AIM: What is Science? The observations: Erwin Chargaff Austrian Biochemist Columbia University 1952

The observations: Chapter 1 - Introduction: Exploring Life AIM: What is Science? The observations: Rosalind Franklin British Chemist/Physicist King’s College 1953

The current DNA model: Chapter 1 - Introduction: Exploring Life AIM: What is Science? The current DNA model: James Watson (mol. biologist) Francis Crick (biophysicist) University of Cambridge 1953

How were the foundations of genetics unraveled? Chapter 1 - Introduction: Exploring Life AIM: What is Science? How were the foundations of genetics unraveled?

How were the foundations of genetics unraveled? Chapter 1 - Introduction: Exploring Life AIM: What is Science? How were the foundations of genetics unraveled?

Chapter 1 - Introduction: Exploring Life AIM: What is Science? It is all about careful observation (data collection)… Followed by building models that fit the data…

Chapter 1 - Introduction: Exploring Life AIM: What is Science? The most sophisticated scientific instrument we know of?

Chapter 1 - Introduction: Exploring Life AIM: What is Science? All you do is collect and process data…formulate hypotheses…and use them to make predictions all day

Chapter 1 - Introduction: Exploring Life AIM: What is Science? Come up with your own example of you doing science today… and write it up

We are always doing science! Chapter 1 - Introduction: Exploring Life AIM: What is Science? We are always doing science! Because you are always making observations, predictions, etc… When you walk down the hall you are collected data (visual data with your eyes, auditory data with your ears, etc…). With this data you generate questions and make predictions. For example, you observe someone running at you. Hypothesis: The person will run into me. Prediction: If I do not move then I will get hit. Experiment: Stay put. Results: The person hit me supporting my hypothesis.

Chapter 1 - Introduction: Exploring Life AIM: What is Science? How does the scientific enterprise actually work?

What do scientists do with their findings? Chapter 1 - Introduction: Exploring Life AIM: What is Science? What do scientists do with their findings? They publish them in scientific journals like Science, Nature, Cell, EMBO, PLOS One, etc…

Tentative and Fallible Chapter 1 - Introduction: Exploring Life AIM: What is Science? Tentative and Fallible The findings of science are based on observation, but the observations could be misleading. For example, the Earth appears to be flat… Likewise, people thought Newton’s law of gravity was correct, but Einstein came along and revised it. This type of thing happens all the time. In addition, it was originally thought that water was HO. All of the observations pointed to HO at the time… The more reliable observations you make, the closer one gets to knowing the truth…

Theory Law Chapter 1 - Introduction: Exploring Life AIM: What is Science? Theory 1. Very broad in nature (describe many, many different phenomenon). 2. Supported by enormous numbers of observations 3. Examples: Theory of Evolution Cell Theory Law 1. Very concise in nature (describes a very specific phenomenon). 2. Supported by enormous numbers of observations 3. Examples: Law of Gravity Laws of thermodynamics Laws of motion

Science GOD and Chapter 1 - Introduction: Exploring Life AIM: What is Science? GOD and Science

? So is this class really about science Chapter 1 - Introduction: Exploring Life AIM: What is Science? ? So is this class really about science

? science Chapter 1 - Introduction: Exploring Life AIM: What is Science? ? The hierarchy of life, emergent properties, and the structure -function relationship science

Chapter 1 - Introduction: Exploring Life Chapter 1 - Introduction: The Scientific Study of Life Chapter 3 - The Molecules of Cells AIM: What are the major characteristics of life? AIM: How is all life united? AIM: How do organisms build/break macromolecules? Period 5/6