Production of Streptokinase

Q.

How much boric acid powder needs to mix in 50kg of rice?

Q. Would the insulin isolated from other animals be just as effective as that secreted by the human body itself and would it not elicit an immune response in the human body?

Q. $Bacillusthuringiensis$ forms proteins which contain insecticidal proteins. This protein

1. Does not kill the carrier bacterium which is itself resistant to the toxin
2. Is coded by several genes including the gene $cry$
3. Is activated by acid pH of the foregut of the insect pest
4. Binds with epithelial cells of midgut of the insect pest, ultimately killing it

Q.

A complex polysaccharide produced from sucrose by the bacterium Leuconostoc mesenteroides is:

1. Chitin

2. Starch

3. Cellulose

4. Dextran

Q. Bacillus thuringiensis has been used to kill certain insects such as

a. Tobacco budworm
b. Armyworm
c. Beetles
d. Flies
e. Mosquitoes

1. a, b, c, d, and e
2. a, b and e
3. a, c, d and e
4. b, c and d

Q. Why are some molecules called bioactive molecules?

Q.

In which way have microbes played a major role in controlling diseases caused by harmful bacteria?

Q. In a polluted lake,

1. BOD and DO are high
2. BOD is high and DO is low
3. Both are low
4. BOD is low and DO is high

Q. Which one is not a biofertiliser?

1. $Rhizobium$
2. $Agrobacterium$

3. Mycorrhiza
   

4. $Nostoc$

Q. The trigger for activation of toxin of Bacillus thuringiensisis:

1. Alkaline pH of gut
2. Mechanical action in the insect gut
3. High temperature
4. Acidic pH of stomach

Q.

Sleeping sickness is caused by ____________ a protozoan.

Q. Many proteins are secreted in their inactive form. This is also true of many toxic proteins produced by microorganisms.Explain how the mechanism is useful for the organism producing the toxin?

Q.

Can a bioreactor be called a fermentation tank since it uses oxygen supply system?

Q.

Is Agaricomycetes edible?

Q. Which is not used as a biopesticide?

1. $Xanthomonascampestris$
2. $Bacillusthuringiensis$
3. $Trichodermaharzianum$
4. $Nucleopolyhedrovirus$

Q. Enzyme TPA or tissue plasminogen activator is used for

1. Dissolving blood clots
2. Clearing turbidity of juices
3. Maintaining plasma content
4. Stimulating thromboplastin production.

Q. Match column I with column II and choose correct option.

Q. The following figure show

1. Biomagnification
2. BOD
3. Algal bloom
4. Nitrification

Q. Methanogens are potentially of great importance because

1. methane is an excellent energy source
2. both a and c
3. they produce methane
4. they consume methane

Q. Given below are the different steps involved in the process of obtaining therapeutic gene products from genetically modified cells, at a large scale.

1. Separation of product from the culture media
2. Culturing genetically modified cells in bioreactors
3. Clinical trials of the product
4. Purification of the product
5. Taking measures for quality control
6. Formulating the product with suitable preservatives

Select the option which correctly represents the order in which these steps are conducted.

1. 2→3→5→6→1→4
2. 2→1→4→6→3→5
3. 4→5→6→3→2→1
4. 3→6→5→4→1→2

Q. The American company which is involved in the manufacturing of Humulin is

1. Eli Lily
2. Ranbaxy
3. Prohealth
4. Elixir

Q. (a) Why are the fruit juices bought from market clearer as compared to those made at home?
(b) Name the bioactive molecules produced by Trichoderma polysporum and Monascus purpureus.

Q. Assertion :Acetic acid production involves both aerobic and anaerobic processes. Reason: Production of alcohol from glucose is an aerobic process and production of acetic acid from alcohol is an anaerobic process.

1. both assertion and reason are true and reason is the correct explanation of assertion.
2. both assertion and reason are true but reason is not the correct explanation of assertion.
3. assertion is true but reason is false.
4. both assertion and reason are false

Q.

What are the effects of excess vitamins?

Q. Cyclosporin A, used as immunosuppressive agent in organ transplants is produced by.

1. Trichoderma
2. Monascus
3. Streptococcus
4. Staphylococcus

Q. Vitamin $B_{12}$ is an important vitamin required for normal human body functions. Is is produced only by a commensal bacteria present in our intestine and our body absorbs vitamin $B_{12}$ through a glycoprotein called "Intrinsic factor". A disease called the "Blind Loop Syndrome" (BLS) occurs due to over proliferation of this bacterial flora affecting the normal process of digestion and absorption and also leads to vitamin $B_{12}$ deficiency. The appropriate treatment regime for BLS would involve

1. Oral administration of vitamin $B_{12}$
2. Oral administration of intrinsic factor
3. Suppression of the commonsel bacterial growth using an appropriate agent
4. Intake of the commensal bacteria that produce vitamin $B_{12}$

Q. Why are some molecules called bioactive molecules? Give two examples of such molecules.

Q. Match the columns and choose the correct option.

	Column I		Column II
(i)	Aspergillus niger	(a)	Ethanol
(ii)	Clostridium butylicum	(b)	Statins
(iii)	Saccharomyces cerevisiae	(c)	Citric acid
(iv)	Trichoderma polysporum	(d)	Butyric acid
(v)	Monascus purpureus	(e)	Cyclosporin A

1. i-d, ii-c, iii-b, iv-a, v-c
2. i-e, ii-d, iii-a, iv-b, v-c
3. i-c, ii-d, iii-a, iv-e, v-b
4. i-c, ii-d, iii-e, iv-a, v-b
5. i-b, ii-c, iii-d, iv-e, v-a

Q. Match the columns and choose the appropriate option.

	I		II
(a)	Citric acid	(p)	Methanobacterium
(b)	Cyclosporin A	(q)	Monascus purpureus
(c)	Statin	(r)	Aspergills niger
(d)	Gobar gas	(s)	Trichoderma polysponum
		(t)	Clostridium butylicum

1. a-r, b-s, c-q, d-p
2. a-t, b-q, c-s, d-r
3. a-q, b-s, c-t, d-r
4. a-r, b-s, c-q, d-t

Q.

Name free-living nitrogen-fixing bacteria.