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Bacterial Cultures Day

And miscellany…

Learning Goals Yesterdays Recap Exit Cards Revisited Minds ON Homework Take Up Bacterial Cultures Lab Viruses in the News Exit Card

Lesson Objectives

We are / will be learning to… Analyze the risks and benefits of human intervention (e.g. pesticide use,

fish stocking, tree planting, antibiotic use and creation etc.) Analyze how climate change could impact the diversity of living things

(e.g. Global warming, increase in precipitation) Become familiar with terms such as: species diversity, structural

diversity, bacteria, fungi, binomial nomenclature, morphology Classify, apply, and draw dichotomous keys to identify and classify

organisms according to kingdom Explain concepts of taxonomic rank such as genus, species and taxon Compare/contrast characteristics of prokaryotes, eukaryotes and

viruses Compare/contrast anatomical and physiological characteristics of

organisms representative of each kingdom Explain structural and functional changes of organisms as they have

evolved over time Explain why biodiversity is important for maintaining viable ecosystems

Learning Goals

Bacterial Lab (collecting cultures) Viruses

What is it: microscopic organism consisting of genetic material (RNA or DNA) surrounded by a protein, lipid (fat), or glycoprotein coat.

Exists between living and non-living (lacks characteristics of six Kingdoms)

Parasitic existence Examples: Measles, AIDS, SARS Characteristics: Capsid, nucleic acid Shapes Specificity: Viruses must enter cells, are generally selective and only

enter specific hosts Reproduction: Four stages: Attachment and entrance; synthesis of

protein and nucleic acid units; assembly of the units; release of new virus particles

2 Cycles: Lytic: Cell bursts open; Lysogenic: Cell breaks open

Yesterday’s Recap

{ {What does streptobacilli and staphylococci look like:

Why is algae not Planate? What are the characteristics?

Algae = Protista Single celled

(Plantae are multi)

Both plants and algae: Eukaryotes Autotrophs Asexual or sexual

Exit Cards Revisited

http://www.ted.com/talks/jonathan_eisen_meet_your_microbes.html

Minds ON: TED Talk: Meet Your Microbes

Classification

Homework Take Up

We will be looking at our cultures to see if and what type of bacteria our cultures have grown

We will be discussing lab report expectations / exercises

Bacterial Cultures Lab

Activity Sheet Formal Cover Page, Introduction

( includes a purpose, hypothesis and prediction), Methods/Experimental Design, and Conclusion

Attach the Activity Sheet as an Appendix

Lab Report

Hypothesis: The focus of the researcher’s “belief” about what they think will happen:

“It is hypothesized that there will be harmful bacteria present in the girl’s bathroom toilets, on a lock on a locker and on a cell phone. It is further believed that there will be more bacteria on the phone than in the bathroom or on the lock.” Prediction: Specifies the exact outcome expected and

the reason behind it. (try “if, then, because”)“If there is harmful bacteria present in the…, then the cultures will reveal more harmful bacteria present on the …. than the.... . This will occur because….”

The Hypothesis and Prediction

The class will separate into groups of 5. Each group will receive an article that

they are responsible for reading, summarizing and taking a stand on.

Each group will informally share their ideas with the class.

Viruses in the News

How are the two types of bacterial reproduction (Binary Fission and Conjugation) different? Explain briefly.

Exit Card