Are we really what we eat?

Biological Phenomena and Explanatory Models Using scientific evidence to explain how real biological phenomena might work.

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The difference between an observation and an inference Observation Inference A verifiable description or measurement An educated guess based on observations or prior knowledge Could an inference be incorrect? How would you test it?

Scientists at Work!  Observations (looking carefully)  Observed fibers, veins, color, shape, parts of foods, water upon cutting  We’ll make a list of what kind of observations we might make for Lab 01  Prior knowledge (experience)  Digestive system breaks down food and distributes nutrients to body.  Onion becomes sweet after cooking and makes you cry.  DNA found in nucleus of cells  These unprocessed foods are made out of plant cells  Proteins, carbs, and lipids are in foods  Inferences (educated guess)  Carbs are inside the potato; carbs and protein form the flesh of the red pepper; proteins are in the skin of the carrot; lipids and proteins might be found inside sweet potato, but where?  Observations (looking carefully)  Observed fibers, veins, color, shape, parts of foods, water upon cutting  We’ll make a list of what kind of observations we might make for Lab 01  Prior knowledge (experience)  Digestive system breaks down food and distributes nutrients to body.  Onion becomes sweet after cooking and makes you cry.  DNA found in nucleus of cells  These unprocessed foods are made out of plant cells  Proteins, carbs, and lipids are in foods  Inferences (educated guess)  Carbs are inside the potato; carbs and protein form the flesh of the red pepper; proteins are in the skin of the carrot; lipids and proteins might be found inside sweet potato, but where?

Are we really what we eat?

What is food? Look at Hungry Planet book Can it be….?

How Do We Categorize Foods?  groups/ groups/  groups/ groups/

Life in Its Diverse Forms  Diversity is the hallmark of life.  The diversity of known life includes 1.8 million species.  Estimates of the total diversity range from 10 million to over 200 million species.  Diversity is the hallmark of life.  The diversity of known life includes 1.8 million species.  Estimates of the total diversity range from 10 million to over 200 million species. Biosphere Ecosystem African savanna Community All organisms in savanna Population Herd of zebras Organism Zebra

The Three Domains of Life  The three domains of life are:  Bacteria  Archaea  Eukarya  The three domains of life are:  Bacteria  Archaea  Eukarya Prokaryotes Eukaryotes At least four kingdoms of Eukarya -Plantae -Fungi -Animalia -Protists (a group of multiple kingdoms)

How is the diversity of our food related to the diversity of life?  Get out your books and come pick up one Reading Guide 01 per person  Please share your books in your group.  Although you will be working in groups, each person is responsible for turning in their own reading guide.  You will have 30 minutes. Divide up the work as you wish. Please be watchful of the time.  When you are done you can start work on Part I of our Model until we come back together as a whole class.  Get out your books and come pick up one Reading Guide 01 per person  Please share your books in your group.  Although you will be working in groups, each person is responsible for turning in their own reading guide.  You will have 30 minutes. Divide up the work as you wish. Please be watchful of the time.  When you are done you can start work on Part I of our Model until we come back together as a whole class.