MCQ Practice Test - CHAPTER 10 BIOTECHNOLOGY AND ITS APPLICATIONS

Welcome to your Ncert-Class12- Biology- Biotechnology and its Applications

Instruction

Total Questions : 20

Total Marks : 20 x 4 = 80 Marks

Each Correct Question carries : 4 Marks

Each incorrect Question Carries : -1 Marks

Each Unattempted Question carry : 0 Marks

Be careful On Negative Markings

Which does not describe a function of the DNA polymerase molecule?

Make the proper nucleotide to match with the base read on the template strand

Read the strand of template DNA and recognise the base there

Recognise the free nucleotide that pairs with the base on the template strand of DNA

Proofread to ensure that the proper base has been incorporated

None

What is the function of the polymerase chain reaction in genetic engineering?

Link together newly joined fragments of DNA

Make millions of copies of a specific segment of DNA

Cut DNA into many fragments

Carry DNA into a new cell

None

Assertion : SCID is a primary immunodeficiency.

Reason : It is a serious congenital immunodeficiency.

Both the Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.

Both the Assertion and Reason are false

Both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion.

The Assertion is true but the Reason is false.

None

Select the correct option for the given statements X, Y, and Z.

X - A transgenic cow, Rosie produced human protein-enriched milk, which was a nutritionally more balanced product for human babies than natural cow milk.

Y- Milk produced by transgenic cow Rosie contains 2.4 gm protein/L.

Z- In the above-mentioned milk in Y statement, alpha-lactalbumin is present.

Statements X, Y, Z are true and statement Z gives correct explanation for X

Statements X and Y are wrong and statement Z is correct

Statements X, Y, Z are true and statement Z does not give correct explanation of X

Statements X and Y are correct and statement Z is wrong

None

The Bt toxin is used for killing nematodes in crop plants. But, it is non-toxic to humans. Select the correct reason for this

The pro Bt-toxin activation requires temperature above human body temperature

The pro Bt-toxin activation requires pH lower than that present in the human stomach.

The Bt-toxin recognises only insect-specific targets.

Conversion of pro Bt-toxin to Bt-toxin takes place in highly alkaline conditions.

None

What is the permanent cure of adenosine deaminase (ADA) deficiency in children?

Enzyme replacement therapy in which functional ADA is given to patient by injection

Bone marrow transplantation

Introduction of gene isolated from the bone marrow cells which produce ADA, into the cells of the patient at early embryonic stages

Infusion of genetically engineered lymphocytes (in which functional ADA-cDNA is introduced) into the patient's blood

None

All of the followings are associated with replacement principle of animal biotechnology except _______.

Computer models

Epidemiological studies

Cell culture

Improving experimental technique

None

Read the two statements A and B and identify the correct choice from the given options.

Statement A : Agrobacterium tumefaciens is the causative agent of crown gall disease of dicots.

Statement B : Agrobacterium tumefaciens cause infection by entering the plant through wounds and injuries.

Both statements A and B are wrong

Statement A is correct and B is wrong

Statement B is correct and A is wrong

Both statements A and B are correct

None

What might be an advantage of beginning gene therapy prior to birth?

The body would not reject it as it has not yet recognized 'self'.

The cells being extremely young. are more receptive of gene therapy.

This would give the body plenty of time to utilize the new genes.

There probably is not any advantage.

None

10.

Which of the following risks are associated with genetically modified foods?

Allergic reactions in human beings

All of these

Antibiotic resistance in microorganisms present in alimentary canal

Toxicity in human beings

None

11.

Study the following steps which are followed during the process of gene therapy while treating a patient of SCID

(i) Retrovirus infects lymphocytes extracted from bone marrow of the patient and cultured.

(ii) Engineered cells are injected into patient's bone marrow.

(iii) Normal allele is inserted into a retrovirus.

(iv) Retrovirus makes a DNA copy of its RNA. This DNA carrying the normal allele gets inserted into the chromosome of the host cell.

Arrange the above given steps in correct sequence and select the correct answer.

(iii), (i), (ii) (iv)

(iv), (ii), (iii), (i)

(iv), (iii), (i), (ii)

(iii), (i), (iv), (ii)

None

12.

Proinsulin and insulin differ in structure due to the presence of the _____ in proinsulin.

B polypeptide

C polypeptide

A polypeptide

D polypeptide

None

13.

Transgenic plants are produced by using Ti plasmid from the

Agrobacterium varians

Agrobacterium tumefaciens

E.coli

Bacteriophage

None

14.

Adenosine deaminase deficiency can be permanently cured by which of the following methods?

Enzymes replacement therapy

Gene therapy at early embryonic stages

All of these

Bone marrow transplantation

None

15.

Some of the common steps involved in the production of humulin are given below. Choose the correct sequence.

I. Synthesis of the gene (DNA) for human insulin artificially.

II. Culturing of recombinant E. coli in bacteria.

III. Purification of humulin.

IV. Insertion of human insulin gene in plasmid DNA.

V. Introduction of recombinant plasmid into E. coli.

VI. Extraction of recombinant gene product from E. coli.

I, V, IV, II ,VI, III

I, III, V, VI, II, IV

I, IV, V, II ,VI, III

II, I, IV, Ill, V, VI

None

16.

Important objective of biotechnology in agriculture section is

To decrease the seed number

To increase the plant weight

To produce pest resistant varieties of plant

To increase the nitrogen content

None

17.

Gene can therapy can be referred to as

Cancer treatment using in-vitro cultured stem cells

Genetic engineering using rDNA technology

Pre-clinical testing for inherited diseases in newborns

Treatment of diseases caused by genetic defect

None

18.

Which of the following protein is produced by the genetically modified microorganism to improve animal milk production?

None of these

Bacteriocin

Albumin protein

Bovine somatotropin

None

19.

Human insulin is being commercially produced from a transgenic species of _______________.

Escherichia

Saccharomyces

Rhizobium

Mycobacterium

None

20.

Which of the following statements is not correct?

Insulin used for diabetic patients was earlier extracted from pancreas of slaughtered cattle and pigs which was more efficient than that the genetically engineered insulin

Bone marrow transplantation requires periodic infusion of genetically engineered lymphocytes

Bio-remediation is the one of the applications of biotechnology

PCR technique is applied to detect HIV in Suspected AIDS patients and to detect mutations in genes in suspected cancer patients

None

Curriculum

Ncert - class 12 - Biology - unit IX - BIOTECHNOLOGY- Notes, online test, practice test

Chapter 9-BIOTECHNOLOGY : PRINCIPLES AND PROCESSES

CHAPTER 10 BIOTECHNOLOGY AND ITS APPLICATIONS

MCQ Practice Test – CHAPTER 10 BIOTECHNOLOGY AND ITS APPLICATIONS

Instruction