Online Biotechnology Test - Biotechnology Test 9

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Total number of questions: 20.
Time allotted: 30 minutes.
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Select the wrong statement about plasmids?

It is extrachromosomal

It is double stranded

Its replication depends upon host cell

It is closed and circular DNA

[#]

The recombinant hGH lacks

terminal glutamine

terminal lysine

terminal methionine

terminal arginine

[#]

The element neon (Ne) has eight electrons in its outermost electron shell. How many covalent bonds will Ne readily form?

None

One

Two

Four

[#]

During meiosis crossing over takes place at

zygotene stage

diplotene stage

diakinesis stage

pachytene stage

[#]

The right segment of octopine T-DNA (TR) is necessary for

enzymes for agropine biosynthesis

tumour formation

conjugative transfer

all of these

[#]

Tomatoes exhibiting delayed ripening express antisense RNA against

glycerol 1 phosphate acyl transferase

polygalactouranase

ACC deaminase

sucrose phosphate synthase gene

[#]

Which of the following dies from Ti plasmid infection?

Rice

Corn

Sorghum

All of these

[#]

The rate of degradation and microbes resistance to toxic pollutants remain better when the

mixed cell population is used

individual cell is used

mixed cell population along with metals is used

individual cell along with metal is used

[#]

During sickle cell anemia which of the following takes place?

Glutamine change to valine

Valine change to glutamine

Aspartic acid change to glutamic acid

Glutamic acid change to aspartic acid

[#]

10.

A deficiency of the enzyme Hypoxanthine Guanine phosphoribosyl transferase (HGPRT) may cause

Gaucher's disease

Ehlers-Danlos syndrome

Lesch- Nyhan syndrome

Kleinefelter's syndrome

[#]

11.

Which of the following is the normal cell cycle, primarily regulated at checkpoints?

Metaphase in mitosis

Anaphase, G1 boundary

G1-S boundary

S-G2 boundary

[#]

12.

Which of the following histone is not present in SV40 virus?

H2A

[#]

13.

Cos cell line is

cohesive end site of phage λ

derivative of permissive CV-1 monkey cell line

cohesive initial site of phage λ

derivative of non-permissive CV-1 monkey cell line

[#]

14.

Recombinant adeno virus can be created by deleting E1A/E 1B genes that are

transcriptional regulators and are essential for viral replication

not necessary for viral replication

coding for virus coat protein

important for packaging of viral DNA into viral head

[#]

15.

YAC vectors can be used to obtain artificial chromosomes because it carries

centromere

telomere

autonomously replicating sequence

all of these

[#]

16.

Which of the following promoters is repressed in presence of glucose?

Galactokinase (GAL 1)

Acid phosphatase (PHOS)

Both (a) and (b)

Phosphoglycerate kinase (PGK)

[#]

17.

Transfection refers to which of the following?

Synthesis of mRNA from DNA template

Synthesis of protein based on mRNA sequence

Introduction of foreign gene in to a cell

The process by which a cell become malignant

[#]

18.

Which of the following is/are the method of transfection for making transgenic animals?

Transfer of whole nuclei

Transfer of whole individual chromosomes or fragment

Transfer of DNA

All of the above

[#]

19.

The Ig locus is about

2/3^rd of all hybridomas

l/3^rd of all hybridomas

l/2^nd of all hybridomas

1/4^th of all hybridomas

[#]

20.

In submerged process for the fermentation to produce citric acid,

A. niger is used with solid substrate as sweet potato

A. niger floats on the surface of solution

Fungal mycelium grows through out the solution in a deep tank

both (a) and (b)

[#]

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Online Biotechnology Test - Biotechnology Test 9

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