Tuesday, October 30, 2012

Biology Study classes

Dear Students

This Wednesday 31 Oct after school in room B8 Mrs Rippon will hold a Scholarship biology study class.

On Sunday 4 Nov from 1.00pm in room B8 Mrs Rippon will host the second part of the gene expression topic. Feel free to bring food for a shared food break during this study class.

All Biology students are welcome to attend these study classes.

Regards
Mr Edwards

Wednesday, October 24, 2012

Hank talks protein folding, prions and ZOMBIES!

Find out more here 

Sorry wrong dates

Of course I meant Wednesday 24, Saturday 27 and Sunday 28

Regards
Mr Edwards

Biology Study Classes

Dear Students

Here are some times for study classes in the next week or so.

Wednesday 23 October Room B12 after school Scholarship

Saturday 26 October Room B12 starting 10.30am Yr 13 Biology

Sunday 27 October Room B8 starting 1.00pm Yr 13 Biology

Regards
Mr Edwards


Protein Structure and Function - Part 2 - YouTube

Protein Structure and Function - Part 2 - YouTube:

'via Blog this'

Protein Structure and Function - Part 1 - YouTube

This one has a woman narrator!

Protein Structure and Function - Part 1 - YouTube:

'via Blog this'

Sunday, October 21, 2012

Study class Monday 11 am room B8

Dear Students

Mrs Rippon will be holding a study class for year 13 Biology on Monday at 11am in room B8. All Biology students are welcome.

Regards 
Mr Edwards

Sunday, October 14, 2012

Fwd:bozemanbiology just uploaded a video

---------- Forwarded message ----------
From: "YouTube" <noreply@youtube.com>
Date: Oct 14, 2012 7:09 PM
Subject: bozemanbiology just uploaded a video
To: "Richard Edwards" <richardedw@gmail.com>

bozemanbiology has uploaded Selection.
Selection
Paul Andersen explains the importance of selection in biology. Artificial selection occurs when humans choose traits that will be selected for or against. This has created the variety of domesticated animals and crops. He then describes the three main types of ecological natural selection: directional, stabilizing and diversifying. He finishes with a discussion on the importance of sex and the causes of sexual selection.
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Wednesday, October 10, 2012

Biology Study Class Friday

Dear Students

Room B12 at 1.00 pm on Friday 12 October. All year 13 Biology students welcome.

 regards
Mr Edwards

Tuesday, October 9, 2012

Importance of transcription factors (Gene control)

The following was taken from an Evolution blog:

British and Japanese scientists share Nobel Prize for stem cell work

John Gurdon from the UK and Shinya Yamanaka from Japan were awarded the prize for changing adult cells into stem cells, which can become any other type of cell in the body.

The discoveries are placed almost 40 years apart. In 1962, John Gurdon showed that the genetic information inside a cell taken from the intestines of a frog contained all the information need to create a whole new frog. He took the genetic information and placed it inside a frog egg. The resulting clone developed into a normal tadpole. The technique would eventually give rise to Dolly the sheep, the first cloned mammal. (Source 1)

But how did the egg cell body accomplish this reprogramming feat? The answer had to wait 44 years, while molecular biologists gained a more intimate understanding of genes and the agents that control them.

Working with mice, Dr. Yamanaka discovered in 2006 that the reprogramming is accomplished by just four specific gene control agents in the egg. The agents, known to biologists as transcription factors, are proteins made by master genes to regulate other genes. By injecting the four agents into an adult cell, Dr. Yamanaka showed that he could walk the cell back to its primitive, or stem cell, form.

Stem cells generated by this method, known as induced pluripotent cells, or iPS cells, could then be made to mature into any type of adult cell in the body, a finding with obvious potential for medical benefits.

Many biologists hope that Dr. Yamanaka’s technique will be the gateway toward generating replacement tissues from a patient’s own cells for use against a wide variety of degenerative diseases. (from Source 2)

Incidentally, John Gurdon's report card contained the following comment from his high school biology science teacher (he still has that report card with him):
“I believe Gurdon has ideas about becoming a scientist; on his present showing this is quite ridiculous. If he can’t learn simple biological facts he would have no chance of doing the work of a specialist, and it would be a sheer waste of time, both on his part and of those who would have to teach him.”


Source:
1) http://www.bbc.co.uk/news/health-19869673
2) http://www.nytimes.com/2012/10/09/health/research/cloning-and-stem-cell-discoveries-earn-nobel-prize-in-medicine.html?_r=0
3)http://www.dailymail.co.uk/news/article-2214605/Brit-Japanese-scientists-win-Nobel-Prize-groundbreaking-skin-cell-discovery-help-cure-diseases.html

Image credit: www.nytimes.com

Friday, October 5, 2012

Orientation Responses (AS 3.4) flashcards | Quizlet

Here's one for the plant and animal interrelationships section.


Orientation Responses (AS 3.4) flashcards | Quizlet:

'via Blog this'

Study class on Sunday from 1.00 pm

Dear Students

Mrs Rippon will be holding a study class on Sunday 7 October in room B8 Starting at 1.00pm. All Biology students welcome.

Regards
Mr Edwards