Wednesday, June 6, 2018

A timeline of life.... 4.5 Billion years of evolution

A timeline of life.... 4.5 Billion years of evolution

Evolutionary Events and Geologic Time (Deep Time)

Once you've calculated the number of years  between each of the evolutionary events and the distance between each event on your timeline, create an accurate timeline including the number of MYA (millions of years ago) each event occurred.

Use the following images and links (
and others you find on your own) to find images to use as guides for drawing a representative diagram of each event on your timeline. (I included the first few which are more difficult to find... you can find the others on your own.)

Be careful to organize your timeline so you have enough room to draw images for each event... this is easy at the beginning, but very difficult toward the present day... events happen faster and faster toward the present.

Earth is formed
http://www.universetoday.com/58177/earth-formation/















First single celled organisms - you know cells! 
http://learn.genetics.utah.edu/content/begin/cells/organelles/





















Photosynthetic bacteria aka Cyanobacteria 
http://www.astrobio.net/pressrelease/928/when-did-bacteria-appear
























Early multicellular organisms
http://www.dailymail.co.uk/sciencetech/article-1291395/Fossilised-cells-worlds-oldest-multicellular-lifeform.html































Early Plants

















First fish (jawless)
http://www.historyoftheuniverse.com/jawlfish.html


Wednesday, January 10, 2018

Photosynthesis

This simple video does a great job of explaining what the Photosynthesis Equation means at the molecular level. - https://www.youtube.com/watch?v=eJQxHoqIPIM It's on YouTube, so it may not work at school.



The Photosynthesis Rap
https://www.youtube.com/watch?v=x-t0sGyjfto



Photosynthesis Virtual Lab - 

This is just an image... read the rest of the post to find the virtual lab.

In this lab you will be using a computer simulation to test out different variables to see how they affect the rate of photosynthesis.
En este laboratorio va a utilizar una simulación por ordenador para probar diferentes variables para ver cómo afectan a la tasa de fotosíntesis.

To get to the virtual lab CLICK HERE

Para llegar al laboratorio virtual, HAGA CLIC AQUÍ.

Use the handout to keep track of your experiments and your data.
Utilice el folleto para mantener un registro de sus experimentos y sus datos. 


Here is a much more advanced video that takes us deep inside chloroplasts to see what's going on in terms of actually moving electrons around. https://www.youtube.com/watch?v=sQK3Yr4Sc_k

Friday, December 8, 2017

Virus vs. Bacteria

This page lists some sites you can use to research the differences between viruses and bacteria. 

The WebMD site puts it well, "Although bacteria and viruses are both too small to be seen without a microscope, they're as different as giraffes and goldfish." While giraffes and goldfish are very different, they're also very similar. I'd argue that viruses are even more different from bacteria than goldfish are from giraffes. 

Take notes on the basic characteristics and effects of viruses and bacteria. Organize your notes carefully so you can really compare viruses and bacteria. Use at least three sites. Include the following information: 

What are their structures like? What are they made of, and how are they put together. Drawing and labeling a diagram would be a great way to show this. 

How do they function? Where do they get their energy? Do they eat? Do they do photosynthesis? 

Are they plants or animals or even alive? 

How do they reproduce? 

What are several examples of each? 

How do viruses and bacteria affect humans? Are they always bad for us? Are there any helpful ones? 

What are some diseases can they cause? How can those diseases be treated? Should they be treated with antibiotics...why or why not? 


Links: 

Bio for Kids site
http://www.biology4kids.com/files/micro_main.html
http://www.biology4kids.com/files/micro_virus.html
http://www.biology4kids.com/files/micro_bacteria.html

WebMD
https://www.webmd.com/a-to-z-guides/bacterial-and-viral-infections#1 

Mayo Clinic Online
https://www.mayoclinic.org/diseases-conditions/infectious-diseases/expert-answers/infectious-disease/faq-20058098 

Molecular Expressions 
https://micro.magnet.fsu.edu/cells/index.html
https://micro.magnet.fsu.edu/cells/virus.html  
https://micro.magnet.fsu.edu/cells/bacteriacell.html

Diffen.Com
https://www.diffen.com/difference/Bacteria_vs_Virus 

HealthMe
https://www.healthymepa.com/2017/02/21/do-you-need-antibiotics/

Microbiology Info 
https://microbiologyinfo.com/differences-between-bacteria-and-viruses/