Mrs G's Science Blog: Unit 3 Biology

Unit 3 Biology

Photosynthesis

Hank Photosynthesis

Slides for Packet

Click Here

HANK Osmosis Diffusion

Cell Membrane Ted Talk Tuesday

Amoeba Sisters Cell Membrane

Osmosis

Helpful Osmosis/Diffusion Study Guide with Google Slides

Click Here

Murder and a Meal Helpful Links

Need more information? Visit these sites for ideas …

Food Chemistry http://www.sciencecompany.com/sci-exper/food_chemistry.htm

Testing for Lipids, Proteins, & Carbohydrates http://seplessons.ucsf.edu/node/362

Food Chemistry Testing http://www.scribd.com/doc/3371524/Food-Chemistry-Testing-SUGAR-STARCH-ETC

Einstein Project – Food Chemistry http://www.einsteinproject.org/einstein/for+educators/unit+offerings/food+chemistry/default.asp

TEd Ed How do carbohydrates impact your health? - Richard J. Wood

Chapter 1: Lesson 3 (Cell Book)

Chemical Compounds in Cells

Key Questions
*What are elements & compounds?

*What compounds do cells need?

Macromolecules Video

Goals

Evaluate the application of scientific reasoning, inventions, tools, and new technologies in the study of biology.
Apply the scientific concepts of hypothesis, inference, law, theory, principle, fact, and observation.
Analyze structural and functional similarities and differences between prokaryotic and eukaryotes.
Evaluate relationships between structures and functions at various levels of biological organization.
Analyze the unique properties of water and explain how they support life on earth.

How Living Things are Classified

What does it mean to be alive?

1 or more cells (unicellular vs multicelluar)
reproduce (Asexual vs sexual reproduction)
pass on traits (DNA, genetics)
maintain homeostasis
grow/repair (growth vs development)
obtain/use energy (Metabolism)

Obtaining Food

Heterotrophic: Obtain energy from other organism

Autotrophic: Make their own food and create their own energy

spontaneous generation: mistaken idea that living things can arise from nonliving sources.

Biology: The study of life

Where do you find Biology in our world?

preserving the environment

improving the food supply

genetic engineering

human genome

genome: complete genetic material found in an individual

fighting disease

AIDS, HIV, Cancer

Emergence of new disease

gene therapy: replaces defective genes with new genes

cystic fibrosis, hemophilia

Lesson 2 Classifying Life (Book B)
(pages14-21)

classification: process of grouping things based on similarities

taxonomy: study of how organisms are classified

binomial nomenclature: two part scientific name.. the genus species name

genus: contain similar organisms

species: similar organisms that can mate and produce offspring that can also reproduce.

Major Levels of Classification

The taxa in hierarchical order:

Domain - Archea, Eubacteria, Eukaryote.
Kingdom - Plantae, Animalia, Fungi, Protists
Phylum.
Class.
Order.
Family.
Genus.
Species - smallest classification.

3 Domains

Archae
Bacteria
Eukarya

Taxonomic Keys are useful tools that help determine the identity of organisms

Hiearchy Structure of a Human

3D Organ Printing Video

http://www.cnn.com/videos/world/2016/02/18/printer-3d-organs-intv.cnn

Prokaryotic Vs Eukaryotic

Prokaryotic: Simple, old, primitive, extremophiles, live in harsh conditions, lacks true nucleus (contain domains Archea and Bacteria)

Eukaryotic: more complex, membrane bound organelles, true nucleus, found in Domain Eukarya

Water (Cell Book Pg 27, Diversity Book pg 12)

The Importance of Water

All livign things need water to survive
Only substance that if found as a solid, liquid and gas
It is covalently bonded
They are bonded together by hydrogen bonds
Has high Cohesion (Attraction between 2 like things)

Adhesion sticking to other substances
Does Capillary action (defies gravity, the ability to go up)
Great SOLVENT (great at dissolving things) Known as the UNIVERSAL SOLVENT
Hydrophilic vs hydrophobic

Image result for hydrophilic vs hydrophobic

Ability to dissolve more chemicals than any other substance on Earth
High Heat Capacity: hard to heat up and cool down.. holds temperature well (regulates climate)
90% of the liquid in your blood
Water takes part in most chemical reactions in cells
Helps cells keep their shape
Without water life as we know it would would not exist

Viruses: Diversity of Life Book ( pages 40-45)

Is a virus alive?

NO!

Outside of a cell it does not perform life functions
Enters cell, takes over life functions, destroys DNA, inserts its own genetic material, takes over ,replicates, kills cell, bursts, spreads virus

What is a virus? A pathogen, which is an agent that causes disease.

Viral Structure

Can contain RNA or DNA

RNA Virus: HIV, flu, rabies

DNA Virus: warts, chicken pox, mono

Shapes

enveloped

helical

polyhedral

Vocab

bacteriophage: virus that infects bacteria.

Video Bacteriophage
http://www.seeker.com/the-secret-soviet-virus-that-helps-kill-bacteria-2141944345.html

vaccine: virus stimulating an immune response

Plants and animal can get a virus!

Cells Alive

How Flu Viruses Attack

http://video.nationalgeographic.com/video/swine-flu-overview-vin

TedEd: How do vaccines work?

The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to protect him from the related (and deadly) smallpox virus. But how does this seemingly counterintuitive process work? Kelwalin Dhanasarnsombut details the science behind vaccines.

TedEd: Small Pox

For 10,000 years, humanity suffered from the scourge of smallpox. The virus killed almost a third of its victims within two weeks and left survivors horribly scarred. But Simona Zompi commends the brave souls – a Buddhist nun, a boy, a cow, a dairymaid and physician Edward Jenner – who first stopped the spread of this disastrous disease, to make us smallpox-free today.

Viruses & Germs Resources
http://www.seeker.com/search/?q=Viruses+and+germs

Vaccines TImeline
http://www.historyofvaccines.org/timeline

How to Become an Epidemiologist?
CareerBuilder Videos from funza Academy.

Bacteria

What is the difference between a bacteria & a virus

Bonus Bacteria Video

Crash Course Bacteria

Bacteria: single celled PROKARYOTIC organism. Their genetic material in their cells is NOT in a nucleus.

Bacterial Shapes:

Sphere Shaped

Rod Shaped

Spiral Shaped

Respiration

Cellular respiration: process of breaking down food to create energy

Reproduction

Asexual Reproduction: the process is called BInary Fission

Sexual Reproduction: the process is called conjugation

endospore: inside of a bacteria and contains the genetic material

Role of Bacteria In Our World

Oxygen Production
Food Production
Health and Medicine
Environmental Clean up
Environmental Recycling

decomposers: break down large, complex chemicals in dead organisms into small, simple chemicals.

Gram Stain

Gram negative cell walls contain a thin peptidoglycan layer (without techoic acids) that is surrounded by a thick plasma membrane. Gram positive bacteria will stain purple because of their thick peptidoglycan cell wall.

Image result for easy difference between gram stain negative and positive

TedEd: What causes antibiotic resistance?http://ed.ted.com/lessons/how-antibiotics-become-resistant-over-time-kevin-wu

Right now, you are inhabited by trillions of microorganisms. Many of these bacteria are harmless (or even helpful!), but there are a few strains of ‘super bacteria’ that are pretty nasty -- and they’re growing resistant to our antibiotics. Why is this happening? Kevin Wu details the evolution of this problem that presents a big challenge for the future of medicine.