Specification reference B3: 1.9 The potential of biotechnology and ...

wirelessthrillBiotechnology

Dec 11, 2012 (4 years and 10 months ago)

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Unit B3

Topic 1

Lesson 5

Biotech promises


Specification reference

B3: 1.9

The potential of biotechnology and evaluate in
relation to world food shortage.

B3: 1.10

Weed control to reduce loss of food supplies by
genetically modifying crops to ensure they are
resistant to herbicides.

B3: 1.13

T
he ethics of genetic modification, particularly its
use in developing countries.


Additional Science Book

B2: 1.4

Genetic engineering

Other lessons in this book

B3: 1.6

Weeds and pests





Communication

Use of images to convey
information

ICT

Use of I
CT to design poster;
internet research


Student Book pages 22

23

Worksheet B3: 1.5(1)

Worksheet B3: 1.5(2)

Technician’s notes B3: 1.5



biotechnology

ethics

genetic modification

resistance





Use Worksheet B3: 1.5(1) ‘Biotechnology wordsearch’ as a
way to introduce some of the
key vocabulary. This resource might also provide a useful revision activity at some point.

Resources



Worksheet B3 1.5(1)



Learning outcomes



recognise that biotechnology has a number of branches of work



appreciate the poten
tial benefits of biotechnology

Teaching and learning activities

Resources

Ask pupils to answer questions
1

to
3

on page 22 in the Student Book. This includes

creating a poster or display about the benefits of biotechnology. You could add a twist to

thi
s by briefing half the class to promote biotech’s benefits and the other half to promote the
dangers and risks. The two groups could then decide which one made the best case


and
why.



Student Book page 22



Poster
-
making materials,
access to computers if
po
ssible to use DTP and
graphics programs.



Learning outcomes



understand the concept of yield



appreciate that yield is affected by a number of factors and is not controlled by a single gene



recall the main factors that affect yield in a crop

Teaching an
d learning activities

Resources

Do the investigation on Worksheet B3: 1.5(2) ‘Killing weeds’. This involves leaving the
seeds to grow for a few days before results become available.

Ask pupils to answer questions
4

to
6

on page 23 in the Student Book.



Wor
ksheet B3: 1.5(2)



Technician’s notes B3: 1.5

Safety note: Be aware that
herbicides are poisonous and
should be handled with care
even at the low concentrations
used in this investigation



Student Book page 23



Learning outcome



recognise that biotechnol
ogical agriculture creates new potential problems



recall some of the potential problems of a biotechnological approach to weed and pest control

Teaching and learning activities

Resources

Do the investigation on Worksheet B3: 1.5(2), ‘Killing weeds’. This

involves leaving the
seeds to grow for a few days before results become available.

Ask pupils to answer questions
7

and
8

on page 23 in the Student Book.



Worksheet B3: 1.5(2)



Technician’s notes B3: 1.5

Safety note: Be aware that
herbicides are poisonous a
nd
should be handled with care
even at the low concentrations
used in this investigation



Student Book page 23





Pupils write down five things learned in the lesson. You can then ask for answers and write the list on the board.



LOW DEMAND

1

Biotec
hnology is technology that
uses biological materials, for
example, enzymes, in an industrial
context, and is also used to describe
a range of genetic engineering
techniques. It can cover medical
technologies, genetic engineering
and a range of agricultural

developments.

2

Medical technologies, genetic
engineering and agricultural
developments.

3

Accept any sensible attempts.

STANDARD DEMAND

4

Resistance to pests, tolerance of
herbicides, tolerance of drought,
tolerance of low temperatures.

5

Yield is influe
nced by many factors
and each factor will have at least one
gene controlling it.

6

The farmers could grow wheat
instead of relying on unimproved
grass and yaks. Wheat produces
much more food per area of ground
than yaks.

HIGH DEMAND

7

Unintended harm to o
ther organisms;
pesticide effectiveness reduced;
increased use of herbicides; gene
transfer to other species.

8

Accept any sensible suggestions
linked to relevant answer above, e.g.
avoid growing GM and non
-
GM
crops of the same type close
together to reduc
e possibility of gene
transfer.