Biology Test 59

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Biology Test 59

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Weekly Quiz Competition

Question 1
4 / -1

Diameter of B DNA is :-

A
20 Å

B
34 Å

C
3.4 Å

D
10 Å
Question 2
4 / -1

Organic farming includes :-

A
use of fertilizers and pesticides of biological origin

B
Crop rotation

C
locally developed pest resistant varieties

D
all of the above
Question 3
4 / -1

In gel electrophoresis, differential mobility of DNA fragments depends upon :-

A
Helical nature of DNA

B
Double stranded nature of DNA

C
Charge and size of DNA

D
Hydrogen bonding between bases
Question 4
4 / -1

Which linkage (bond) is not found in DNA ?

A
N-glycosidic linkage

B
Phosphodiester linkage

C
Peptide linkage

D
Phosphoester linkage

Question 5

4 / -1

Which of the following is wrongly matched in the given table ?

(i)	Golden rice	Transgenic rice	Vitamin A enriched
(ii)	Flavr savr	Transgenic tobacco	Delayed ripening
(iii)	Bt-cotton	Transgenic cotton	Bacterial and viral resistance
(iv)	Rosie	Transgenic cow	Milk contained human alpha antitrypsin

i and ii

ii, iii and iv

ii and iii

Only iii

Question 6
4 / -1

A eukaryotic gene was introduced into bacteria along with suitable promoter but it was found that this gene did not form similar protein in bacteria. It is due to the :-

A
Absence of RNA polymerase.

B
Absence of origin of replication.

C
Absence of splicing mechanism.

D
Absence of 80s ribosomes in bacteria.
Question 7
4 / -1

To obtain virus free healthy potato plants from diseased potato by tissue culture technique, which part of the disease potato plant will be taken :-

A
Apical meristem

B
Epidermis

C
Axillary meristem

D
Both (1) and (3)
Question 8
4 / -1

In dihybrid cross types of gametes, phenotype and genotype are respectively :

A
4, 4, 9

B
4, 4, 4

C
4, 9, 4

D
2, 4, 9
Question 9
4 / -1

Unlike domestic sewage, waste water from industries like petroleum, paper, manufacturing metal extractions and processing etc, are often important source of water pollution, out of these heavy metals are :-

A
Elements with density < 5 g/cm³

B
Elements with density < 8 g/cm³

C
Elements with density > 5g/cm³

D
Elements with density > 8g/cm³

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Biology Test 59

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Biology Test 59

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SHARING IS CARING

Question 1

20 Å

34 Å

3.4 Å

10 Å

Question 2

use of fertilizers and pesticides of biological origin

Crop rotation

locally developed pest resistant varieties

all of the above

Question 3

Helical nature of DNA

Double stranded nature of DNA

Charge and size of DNA

Hydrogen bonding between bases

Question 4

N-glycosidic linkage

Phosphodiester linkage

Peptide linkage

Phosphoester linkage

Question 5

i and ii

ii, iii and iv

ii and iii

Only iii

Question 6

Absence of RNA polymerase.

Absence of origin of replication.

Absence of splicing mechanism.

Absence of 80s ribosomes in bacteria.

Question 7

Apical meristem

Epidermis

Axillary meristem

Both (1) and (3)

Question 8

4, 4, 9

4, 4, 4

4, 9, 4

2, 4, 9

Question 9

Elements with density < 5 g/cm3

Elements with density < 8 g/cm3

Elements with density > 5g/cm3

Elements with density > 8g/cm3

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Elements with density < 5 g/cm³

Elements with density < 8 g/cm³

Elements with density > 5g/cm³

Elements with density > 8g/cm³