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Biology > Grade 10 Unit 1 > Flashcards

Grade 10 Unit 1 Flashcards

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1
Q

Principal species of yeast used in production of alcoholic drinks

A

Saccharomycete

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2
Q

What happens if alcohol content of wine gets higher than 14

A

It kills the yeast n stops fermentation

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3
Q

What bacterial species r used in milk production

A

Lacobacillius bulbarius n streptococcus thermophillius

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4
Q

What does yeast do in aerobic condition

A

Bread,cake,injera

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5
Q

What is lactic acid fermentation

A

Bacteria acts on lactose

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6
Q

What is alcoholic fermentation

A

Yeast acts on sugar

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7
Q

What is advantage of genetic engineering

A

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

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8
Q

T/F
Pencilin is made from mould fungi

A

T

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9
Q

What is hemophilia

A

Inability of blood to clot after cut or injury

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10
Q

What r hybridomas

A

Antibodies made outside body in hybrid cell cultures

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11
Q

What r interferons

A

Proteins that make body less suspictible to virus attack

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12
Q

What is major component of biogas

A

Methane

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13
Q

What does biogas digester produce

A

Biogas n fertilizer

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14
Q

Which countries r known for production of biogas

A

Brazil China India

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15
Q

What is disadvantages of using ethanol as fuel

A

It takes lots of plant n large space n suitable climate

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16
Q

T/F
Genetic engineering always give desired characteristics

A

T

17
Q

T/F
Genetically modified plants r always fertile

A

F

18
Q

What is callus n plantlets

A

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

19
Q

What r molasses

A

Waste material from sugarcane n used in ethanol or biofuel production

20
Q

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

A

Distillation

21
Q

What is major component of biofuel

A

Ethanol

22
Q

Which type of energy is generated from organic wastes thru fermentation

A

Biogas

23
Q

Which group of microorganisms is pencilium notatum on

A

Fungi

24
Q

_____is hormone extracted from genetically engineered bacteria to help diabetic patients

A

Insulin

25
Q

Science of heredity is

A

Genetics

26
Q

are being used more and more for genetic engineering

A

viruses

27
Q

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

A

T

28
Q

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

A

distillation

29
Q

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

A

T

30
Q

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

A

viruses

31
Q

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

A

fungi

32
Q

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

A

T

33
Q

The main groups of microorganisms used in biotechnology

A

bacteria and fungi

34
Q

Just one gram of yeast contains about …… cells

A

25 billion cells

Biology (15 decks)

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