Grade 10 Unit 1

Question 1

Principal species of yeast used in production of alcoholic drinks

Answer 1

Saccharomycete

Question 2

What happens if alcohol content of wine gets higher than 14

Answer 2

It kills the yeast n stops fermentation

Question 3

What bacterial species r used in milk production

Answer 3

Lacobacillius bulbarius n streptococcus thermophillius

Question 4

What does yeast do in aerobic condition

Answer 4

Bread,cake,injera

Question 5

What is lactic acid fermentation

Answer 5

Bacteria acts on lactose

Question 6

What is alcoholic fermentation

Answer 6

Yeast acts on sugar

Question 7

What is advantage of genetic engineering

Answer 7

It takes little space n time. It ALWAYS gives desired characteristics

Question 8

T/F
Pencilin is made from mould fungi

Answer 8

T

Question 9

What is hemophilia

Answer 9

Inability of blood to clot after cut or injury

Question 10

What r hybridomas

Answer 10

Antibodies made outside body in hybrid cell cultures

Question 11

What r interferons

Answer 11

Proteins that make body less suspictible to virus attack

Question 12

What is major component of biogas

Answer 12

Methane

Question 13

What does biogas digester produce

Answer 13

Biogas n fertilizer

Question 14

Which countries r known for production of biogas

Answer 14

Brazil China India

Question 15

What is disadvantages of using ethanol as fuel

Answer 15

It takes lots of plant n large space n suitable climate

Question 16

T/F
Genetic engineering always give desired characteristics

Answer 16

T

Question 17

T/F
Genetically modified plants r always fertile

Answer 17

F

Question 18

What is callus n plantlets

Answer 18

Callus is mass of cells produced in nutrients medium from tissues taken from plant parts
Plantlets is what callus develops into

Question 19

What r molasses

Answer 19

Waste material from sugarcane n used in ethanol or biofuel production

Question 20

What method is used to separate ethanol from other fermentation products in biofuel production

Answer 20

Distillation

Question 21

What is major component of biofuel

Answer 21

Ethanol

Question 22

Which type of energy is generated from organic wastes thru fermentation

Answer 22

Biogas

Question 23

Which group of microorganisms is pencilium notatum on

Answer 23

Fungi

Question 24

_____is hormone extracted from genetically engineered bacteria to help diabetic patients

Answer 24

Insulin

Question 25

Science of heredity is

Answer 25

Genetics

Question 26

are being used more and more for genetic engineering

Answer 26

viruses

Question 27

T/F There is a limit to the types of protein that bacteria are capable of making

Answer 27

T

Question 28

process of purifying a liquid by boiling it and condensing its vapour

Answer 28

distillation

Question 29

T/F In cheese making, a different starter culture is added to warm milk

Answer 29

T

Question 30

sub-microscopic infectious agents that are unable to grow or reproduce outside a host cell

Answer 30

viruses

Question 31

simple organisms, often microscopic, that cannot photosynthesise and feed as parasites or saprophytes

Answer 31

fungi

Question 32

T/F Not all types of micro-organism are used in biotechnology

Answer 32

T

Question 33

The main groups of microorganisms used in biotechnology

Answer 33

bacteria and fungi

Question 34

Just one gram of yeast contains about ...... cells

Answer 34

25 billion cells