B3.25/6/7

Question 1

What separates plant cells

Answer 1

Pectinase

Question 2

What does cellulose do

Answer 2

Breaks down cellulose in cell wall

Question 3

Where does cellulase come from

Answer 3

Mo in digestive system of cow

Question 4

Conventional breeding

Answer 4

Repeated selected breeding (with cross breeding)

Question 5

Gm tomato

Answer 5

Contains snapdragon genes that produce flavonoids

Question 6

Flavonoids

Answer 6

Help mice with cancer live longer

Question 7

Problem with gm crop in developing countries

Answer 7

Much more expensive

Not adapted to their climate, soil —> low yield

Question 8

Bacteria used for transgenic plants

Answer 8

Agrobacterium tumefaciens

Question 9

How are transgenic plants produced

Answer 9

Desired gene placed in aggro bacterium which is then allowed to infect plant (acts as vector)

Question 10

What are transgenic organisms

Answer 10

Containers genes transferred from another organism

Question 11

Where is by toxin from and what is it

Answer 11

Bacillus thuringiensis, when eaten by insects is poisonous

Question 12

Adv of bt toxin

Answer 12

Higher yield, less pesticide used (better for environment) more money less space

Question 13

Disadv bt toxin

Answer 13

Kill other insects; butterflies, bees,
May transfer to closely relates wild plant through pollination
Bt resistant insects

Question 14

Uses of cellulase pectinase

Answer 14

Manufacture of fruit juice