BIOTECHNOLOGY - ltu-scienceteaching

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22 Οκτ 2013 (πριν από 3 χρόνια και 8 μήνες)

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BIOTECHNOLOGY

Introduction

Proposed program for a Biotechnology day for
middle years

Program Overview

9
-
12.00 pm (with 30 min break at around 10.30 am):

Pre
-
survey, theory, powerpoint, group work, individual
work, written exercises

12.00
-
1.00 :

Lunch

1.00


3.00:

Hands
-
on activities

3.00


3.30:

post
-
learning survey


Overview continued…

Hands
-
on activities

1


3 pm

4 stations:


Simulating yeast fermentation & balloon blowing with
baking soda and vinegar


Making double helix


Extracting DNA


Powerpoint on Biotechnology


Students work in groups of 3. Hence there will be approx 20
groups. Need to purchase sufficient materials for 20 groups at
each station.

Double Helix:

For each group of 4


Pink & white marshmallows
(about 15 white and 15 pink )


4 different colours of gummy
bears(4 of each colour)


Thin, flexible wire (about 60
cm each group)


Toothpicks (8)

DNA Extraction:

For each group of 4


2
drinking cup, 1 tea spoon, 1
table spoon


About 20 ml cold alcohol (ethanol
-

methylated spirit will do), salt,
dishwashing liquid e.g.
Palmolive or Dawn etc.,


1 Chux superwipe as filter cloth,


1 Glad zip loc sandwich bag


1 Funnel


1 Satay stick


1 glass tube or small glass jar


2 strawberries
or

1 kiwi fruit


Yeast fermentation
simulation:



Sodium bicarbonate



Vinegar



Balloons



Small empty drink bottle

Biotechnology: Introduction

1. Prior knowledge survey exercise

2. Get into groups of 4:


How many other words can you form with
this word ‘biotechnology’?


What do you know about biotechnology


brainstorm in your group.


15 mins small groups
activity + 10 mins whole
group presentation

9 am: Wan will introduce

15 mins

In groups of 4, discuss and write down what you know
about each of these topics (1
-
5 below) for example,
one of the things you may discuss is how each is made.



Then choose 2 of these topics and use the Venn
Diagram to write down what the similar and different
things about these topics are?

1.
Making of bread using yeast

2.
Wine from grapes

3.
Cheese & yoghurt from milk

4.
Beers from malt & barley

5.
New crops and animals from breeding


20 mins small
group discussion
+ 15 mins whole
group

Venn Diagram

Write things that
are similar here

Playing Tennis

Swimming

e.g.Sport

Blood
pups

Sweat?

Build
muscles

What is Biotechnology?


Bio:
Short for Biology,



Biology:
The study of all living





things


Technology:
Tools for evolution


Biotechnology
Therefore means:

A tool that
uses biology for the production of new products



Scientific Definition:
Any technological
application that uses biological systems or living
organisms to make or modify products or processes for
specific use

Biotechnology: Using living things (e.g. plants,
animals or bacteria) to create products or to do
tasks for human beings





What other biotechnology examples can
you think of apart from these ones?



Making of bread using yeast


Wine from grapes


Cheese & yoghurt from milk


Beers from malt & barley


New crops and animals from breeding


Examples of other biotechnology examples



Environment: composting; Werribee
Sewerage farm


Food: crops with higher yields, pest resistant
crops


Medicine: vaccines; insulin


Cosmetic: SKII story


(Pitera)

Biotechnology


more information


Uses living organisms & cells for the
improvement of living things



Includes Many science disciplines: such as Genetics,
Molecular Biology, Biochemistry, & Cell Biology



Includes specialised Scientists such as Food
Scientists (nutritionists), Chemists, &
Geneticists (study genetics)



Biotechnology has: evolved new drugs,
Vaccines, Produced Food Products, Cosmetics,
Improved plants

Biotechnology


Some uses of biotechnology are:


1) Grow more food


2) Help the environment


3) Grow increased amounts of

nutritious food, and therefore improve our
health


HOW DOES BIOTECHNOLOGY WORK?

Scientists look closely at cells,

specifically genes, and make

improvements


What are cells???

Cells: The basic units for all living things

Within the cell we have DNA which contain our
genetic material


Genetic Material:

Traits inherited from parents
to offspring, your DNA makes you uniquely you

Acknowledgement: http://www.enchantedlearning.com/subjects/animals/cell/

For more on Cells visit

http://www.enchantedlearning.com/subjects/biology/cells/

How cell, nucleus, DNA, genes and
characteristics are related


Inside the
cell

is a
nucleus


Inside the nucleus is found
DNA
(deoxyribo
-
nucleic
-
acid)


DNA is made up of
genes


Genes contain the information that
determined many of your

characteristics



Cell

Nucleus

Your
characteristics

DNA

Genes

has

contains

make up

determine

Morning Break: approx 10.30


11 am

Second session: 11


12 pm


Continue from morning session. Include


Draw diagram of cell: label cell, membrane,
cytoplasm, nucleus, mitochondria, ribosomes


Draw flow diagram


Do exercises on worksheets



Note: No. 3 uses sodium bicarbonate (baking soda) and vinegar

Lunch: 12.00


1.00 pm

Hands
-
on: 1


3.00 pm (30 min sessions,


topics below)

Post survey: 3.00
-

3.30 pm