Tuesday, November 20, 2012

Main Page - FreeMind

This is the software which I used to create mind maps of the year 12 Biology Achievement standards. It is a free download and quite simple to use.

Main Page - FreeMind: "FreeMind - free mind mapping software"

'via Blog this'

Wednesday, November 7, 2012

Found in the library possibly incorrectly catalogued?


From Drop Box

Friday, November 2, 2012

Study class reminder

Dear Students

Just a reminder that on Sunday 4 November starting at 1.00pm in room B8 Mrs Rippon will be holding a study class focussing upon the gene expression topic. You are welcome to bring some food for a shared food break during the study class.

All year 13 Biology students are welcome.

Regards
Mr Edwards

Thursday, November 1, 2012

Regulating Genes and Evolution INTERACTIVE

Click on the following link to observe how mutations to different areas of DNA can impact the development of organisms.

Rates of evolution in Bacteria INTERACTIVE SITE

Click on the following link to explore mutations and co-evolution between microbes and the organisms they inhabit.

Coral reef INTERACTIVE SITE

Click on the following link to explore connections between species on the reef and with links to survival and evolution .

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.
More videos. New Features. The official iPhone app is here. Get it now.
You were sent this email because you chose to receive updates about new videos uploaded by bozemanbiology. If you don't want these updates anymore, you can change your preferences by visiting My Subscriptions.
©2012 YouTube, LLC 901 Cherry Ave, San Bruno, CA 94066

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

Monday, September 24, 2012

Speciation resource

Check out Berkley's education website on Evolution - some good resources can be found on this website

Friday, September 14, 2012

Study Class

Dear Students

If you are interested I will be running a study class in room B12 from 1.00pm on Saturday 15 September. All Biology students are welcome.
We will use the time to look at some past exam questions and review any topics you feel would help you be more confident in next Mondays examination.

Regards

Mr Edwards

Tuesday, September 11, 2012

Study class Wednesday

Dear Students

If you are interested I will be available in room B12 from 3.15 Wednesday afternoon to hold a 13 biology study class looking at past exam questions to aid your revision for the practice examinations. All biology students welcome.

Regards
Mr Edwards

Sunday, September 9, 2012

Plymouth Barred Rock chicks - genders revealed! (Sex linked traits)

Genders revealed......
Sorry Fran you are a male.....now called Frank
Inigo..........luckily we gave you such a manly name!
Benedict and Pingu our two cute soon to be hens!!
Find out more about how sex can be determined in young chicks using secondary sex characteristics in sex linked traits
http://www.ehow.com/how_6101169_tell-barred-rock-baby-chicks.html

Friday, September 7, 2012

The 'JUNK' in your DNA?

Watch the following clip to find out more about what the 'non coding' parts of your DNA are really used for.... Watch here.

Thursday, September 6, 2012

The 'cute chicks' in B11

Inigo the 'fourth born' - a real attention seeking and needy chick who is just so cute!
 Left to right - Fran (Frank), Inigo (photo bombing!), Pingu, and Benedict,
 Pingu, Fran (who we think is the most dominant of the chicks at this stage), and the others enjoying their first experience of grass.
Inigo and Benedits (youngest and oldest) snuggle up.

Epistasis - Wikipedia, the free encyclopedia

Epistasis - Wikipedia, the free encyclopedia:

'via Blog this'

Mutations

The following video gives examples of substitution and frameshift mutations as well as chromosomal mutations. View video here  

Thursday, August 30, 2012

Telling Body Time (link Gene Expression/Bio Rhythms)

Read the following article on a new method for assessing a persons circadian rhythm and implications for drug treatments

Monday, August 20, 2012

Hot turtles!

Find out more about the sex determination system in Turtles and how climate change can have an effect on ratio of males to females. View video

Friday, August 17, 2012

Non-mendelian Genetics

Paul Anderson touches on incomplete dominance, codominance, epistasis, multiple alleles, multiple genes and linked genes. View the clip to find out more.

Monday, August 13, 2012

Linked Genes

Paul Andersen explains how linked genes behave and how linked genes were discovered. He shows how linked genes would be reflected in a dihybrid cross using a fruit fly simulator. Click here for more

Thursday, August 9, 2012

Brain Expression

Researchers map the expression pattern of 1,000 genes in the human brain. Read the article here.

Sunday, July 29, 2012

Monday, July 9, 2012

Biology Wednesday


Biology Monday was such a success, lets try for Biology Wednesday. 1pm (for the late risers) in room B12 Wednesday 11 July. There could be some food provided too.

All 13 Biology students welcome.

Friday, July 6, 2012

Make Monday Biology Day

Monday 9 July at 10 am room B12

  • past exam questions
  • biotech research
  • review previous topics 


Monday, June 25, 2012

Understanding DNA extraction

Discover how DNA is extracted and some applications of this technique by using this VIRTUAL LAB

Who's your Daddy? - Understanding Gel Electrophoresis

This VIRTUAL LAB shows you the technique used to seperate DNA fragment according to molecular size. The smaller the fragment the faster it moves through the gel. This has been used in DNA fingerprinting since the protocol was invented in 1975. It was commonly used in crime scene analysis and paternity testing. A second animation can be found here.

Understanding PCR

This is a great animation that allows you to perform PCR in a 'VIRTUAL LAB". You step through the process of Polymerase Chain Reaction (PCR) watching what happens at each step.

Biotechnology Learning Hub

This resource is excellent for finding out about what biotechnology is being used in New Zealand in areas of biocontrol, crime scene analysis, human health, and agriculture. Click here to read great STORIES. Watch animations and read more about techniques in the DNA LAB

Friday, June 22, 2012

Crash Course - DNA Replication

The following link has a good overview of DNA replication. Click here to find out more.

Thursday, June 21, 2012

Khan Academy on 60 Minutes

Miss the notes in class? Didn't quite get a key concept?
Find out more about the Khan Academy and learning at your own pace by watching the following video from 60 Minutes. You can sign into Khan academy and register your teachers as tutors for extra assistance as they can track your progress online. Click here to watch video

Monday, June 18, 2012

Scholarship Tutorial

Room B12 Thursday after school
All interested students welcome. Any questions see mr Edwards.

Thursday, June 14, 2012

DNA packaging

Watch the following video clip to show the relationship between the DNA molecule, histones, and when we can define it as Chromatin or a Chromosome.

Endosymbiosis - Evolution of Eukaryotic cells

The following video clip gives an overview of the process of endosymbiosis and the evolution of a more complex cell with double membrane bound organelles.

A tour of the cell - Bozeman Biology

We need to become familiar with the major organelles of the cell. This video clip steps through each organelle explaining function and structure. (Recap from 12 Biology)

Sunday, June 10, 2012

Animation - Phytochrome Signaling

As I sit at my kitchen table and mark your common tests I get the feeling that some of you need to find out more about phytochrome.

Animation - Phytochrome Signaling:

'via Blog this'

Wednesday, May 23, 2012

Short day and long day plants (photoperiodism)

Click here to watch a step-through narrated animation of short day and long day flowering in plants.

Sunday, April 29, 2012

Preparing for battle - Circadian Rhythms

In a study of the molecular underpinnings of plant pest resistant, Rice University biologists have shown that plants both anticipate daylight raids by hungry insects and make sophisticated pre-dawn preparations to fend them off. View video here

Friday, April 27, 2012

2012 ICAS Australian Science Competition

SCIENCE Years 9-13 - entries are open now!! This is a 1 hour written test in June. A great chance to test yourself-too see how you match up to other students here at HVHS, in Wellington and across NZ. The entry fee is $8. You have just 1 week to enter at the Resource Centre. Entries close on Friday 6 May.

Thursday, April 26, 2012

Biodiversity loss and Climate Change

I have a few resources that students may wish to borrow for photocopying (collect from B11)

Books - Climate: The force that shapes our world and the future of life on Earth and The rough guide to Climate Change: The symptoms, the science, the solutions. There is also a DVD - State of the Planet: Is there a crisis (BBC).

Here are a few online tools that can be useful for background understanding. A discussion document can be downloaded, click here


Watch the following videos on:
  • Background to how scientists identify warming and cooling events using SST (sea surface temperature) click here for resource
  • Case study looking at climate change and invasive species. Click here for resource
  • Exploring geological history and environmental conditions triggering mass extinction. Click here for resource

Wednesday, April 25, 2012

Plants in Motion

Follow this link to find videos exploring plant tropisms

Questions about research assessment


I hope every one is getting a good collection of research for our internal assessment. In the past weeks I've fielded a number of questions that I thought I'd share with everyone. If you have any more questions please feel free to email or ask in a comment.


Firstly, Can we copy and paste our info off the Internet into a word document (with sources) so we only get the relevant info, or does it have to be printed off the source?

Yes I am happy for you to process you research in this way as long as it crystal clear what the source of the material is.

Can we make the links about loss of species leading to lack of biodiversity leading to ecosystem damage? Or do we have to find research that explicitly states the loss of biodiversity etc?

Biodiversity and ecosystem damage are very often closely linked and depending upon the situation you are looking at it could be the damage to the ecosystem is the drop in biodiversity, while in other cases it could be that damage to the ecosystem then results in a drop in biodiversity. You do need to make it clear in your essay about the situation you are referring to.
Your research can therefore not explicitly state loss of biodiversity if you can make a sensible argument that the ecosystem damage could then lead to biodiversity changing.

Can we cut and Paste our research by question ie cut it up if it answers 2 points, or does all the info the same source have to be together?

Yes arrange it as it best suits you as long as it is clear where you got the research from.

For the effect of climate change on Biodiversity do we research what is happening to species now AND what will happen in the future or just the future?

The essay is future focused and it could get very long if we analyse the current status to much.

Are we looking for Controversy around whether climate change is occurring, or the effect this will have on biodiversity ie the different effects it could have or how severe?

The controversy we are interested in is focused upon the effects it will have when it occurs. Viewpoints upon its likely severity could also have some relevance.

can we include opinions that it will be beneficial for the ecosystems?

Yes especially if the benefits can be linked to biodiversity changes.

can we write about the increase of algae growth in rivers due to increasing temperatures (as the plant example)  and then link that to decreasing biodiversity in other species (ie algae decrease oxygen, less oxygen= less fish life which means a economic impact as less fish can be caught) ? As opposed to talking about the biodiversty of the algae?
I see no problem with your example. The effect on biodiversity could be direct, or as in the case you mention, a secondary or consequential effect to climate change. For me one of the main characteristics of ecological systems is that there are so many levels of links and interactions between living things and their environment



for the internal, when talking about species, do we have to have detailed into about a few selected species, or can it be lots of brief examples? such as:
 " In Africa, the nyala is vulnerable to expected habitat change in Malawi's Lengwe National Park, and scientists have predicted that South Africa's red lark could lose its entire remaining habitat. Most climate models suggest large-scale habitat losses in the prairie pothole region of North America, which produces 50-80% of the continent's ducks. Other studies predict almost complete loss of high altitude whitebark pine in Yellowstone National Park and of the unique Fraser fir-red spruce forest of the southern Appalachians and Great Smoky, Mountains National Park. " (habitat loss as a result of climate change) 
The example you give would be fine, you may want to spell it out for the reader that; habitat loss leads to extinction for the species in question and therefore a drop in biodiversity for the examples you mention.

can we use resources stating the impacts of just global warming (as well as others about climate change), rather than 'climate change' for all the sources? yes

also, for the degree of damage, i have found views stating 
' biodiversity will be improved' and 'many species will be extinct' '50% species loss predicted' and 'some species will benefit' and 'climate change is predicted to become a major driver of biodiversity loss' and 'climate change exacerbates other stressors' etc, are those what differing views we are looking for?
This is one area of dispute between scientists which is relevant. In addition the idea that factors apart from climate change may be responsible for biodiversity changes is also of relevance in your discussion.



and for implications, can they be general resulting from biodiversity loss, or do they specifically have to be a result of loss of biodiversity due to climate change?  I think the best tack to take is that climate change  leads to biodiversity loss and biodiversity loss has implications that follow ie social, economic etc. the biological impact is the biodiversity loss and the follow on effects when considering food chains and webs and interactions between species.

lastly do we have to discuss how scientists make their predictions (climate models, based on previous climate changes etc) ? only briefly if at all, focus on the effect on biodiversity

Friday, March 30, 2012

Germination Trials

We've been investigating how tomato flesh can inhibit the germination of Mustard seeds.

Monday, March 26, 2012

Lupin Trial 2012

Lupin Trial 2012:
In preparation for our Unit Standard on germination we have been looking at the effect of salinity upon the germination of Blue Lupin seeds.
In our trial they germinated best in a 6.25% solution of sea water to fresh water very few lupin seeds were able to germinate in the 100% sea water trial.

'via Blog this'

Thursday, March 15, 2012

Phototropism and Gravitropism animations

Explore how a plant hormone called auxin stimulates cell elongation in plant shoots in these step by step animations of experiments.
http://bcs.whfreeman.com/thelifewire/content/chp38/3802001.html

Sunday, March 4, 2012

Wednesday, February 29, 2012

Homework

Please take the time to listen to the Chris Stringer talk which I have made a link to in the previous post.

Tuesday, February 21, 2012

Khan academy



The Khan Academy is a educational website that has instructional videos on a wide range of topics, particularly science and mathematics.

I'd like all my students to visit the site and create an account, register me as your coach and view some of the videos and exercises.




This is a link to the site




To add me as your coach see the following image:

Friday, January 27, 2012

2012

School starts next week and a new year 13 Biology class will exist once again like a solar flare erupting from our local star or a freshly emerged mayfly on it's one day of flight.

The student course information booklet is online now. You may notice that we have changed the order of our topics for 2012 and will be starting with the human evolution. This is so we can take advantage of a visiting scientist Professor Chris Stringer who is in New Zealand during February and will be delivering a lecture at the Embassy theatre Wellington on Saturday 25 February. It would be great if as many students as possible attended this event. These are the sorts of happenings that make the course content memorable and help spark interest in the Human Evolution topic.