Class 12 CBSE Biotechnology Exam 2024: CBSE is one of the most popular educational boards in India that affiliates hundreds of schools. The curriculum offered by CBSE is diverse and apt for the overall development of the students. Right now is the era in which new viruses and infections emerging daily. This is causing a high demand for professionals in the field of Biotechnology. Biotechnology is one of the academic electives under group A. The subject branch out from biology but is different in many aspects. To prepare for this technical subject practice is a must. For that purpose, we have fetched the CBSE framed latest Sample Paper for Class 12 Biotechnology students. The solutions cum marking scheme is attached for better understanding and checking your correctness.
CBSE Class 12 Biotechnology, General Paper Instructions:
(i) The question paper has five Sections. All questions are compulsory.
(ii) Section A contains 12 Multiple choice questions and 4 Assertion-Reasoning based questions of 1 mark each; Section–B has 5 short answer questions of 2 marks each; Section C has 7 short answer questions of 3 marks each; Section D has 2 case-based questions of 4 marks; Section E has three long answer questions of 5 marks each.
(iii) There is no overall choice. However, internal choices have been provided in some questions. A student has to attempt only one of the alternatives in such questions.
Sample Question Paper 2023-24
Class XII Biotechnology
(Subject Code-045)
Section A
Q1 Type II Restriction Enzymes are employed and not type I and type III, in Recombinant DNA technology because:
(a) They recognise a palindromic recognition sequence.
(b) They lyse specifically within the restriction site.
(c) They cleave 1 bp away from the 5’ end.
(d) They cleave both DNA strands simultaneously.
Ans: (b) They lyse specifically within the restriction site.
Q2 A bull has trouble walking and getting up, He is nervous and violent. This condition is getting worse with time. The causative agent responsible for these symptoms could be :
(a) Bacillus anthracis
(b) Virion
(c) Mycobacterium bovis
(d) Prion
Ans: (d) Prion
Q3 Turbidity measurement method for ascertaining the number of microbial cells in liquid culture is not accurate. Choose the correct explanation.
(a) It measures both live and dead cells.
(b) It measures a low amount of cells too.
(c) It is a difficult and non-sensitive technique.
(d) It destroys the sample solution.
Ans:(a) It measures both live and dead cells.
Q4 To increase the efficiency of picking of the insert by a vector, Dr Kumar decided to make use of ___________________ in the genetic engineering protocol. Identify the tool.
(a) DNA Ligase
(b) DNA Phosphatase
(c) Alkaline Phosphatase
(d) DNA Polymerase
Ans: (c) Alkaline Phosphatase
Q5 Example of Single-Cell Protein
(a) Yeast
(b) Bacteria
(c) Algae
(d) All of these
Ans: (d) All of these
Q6 The first human cell line established by George Gay in the 1950s from cervix cancer is called ____________
(a) CHO cell line
(b) Cos-1 cell line
(c) HeLa cell line
(d) Fibroblast cell line
Ans: (c) HeLa cell line
Q7 In 1603, Baricelli reported that a spectrum of diseases like jaundice, skin lesions etc can be treated by administration of :
(a) Curd
(b) Honey
(c) Milk
(d) Whey
Ans: (d) Whey
Q8 An important plant secondary metabolite produced through tissue culture which has found use in antifertility drugs is _________________
(a) Berberine
(b) Quinine
(c) Shikonin
(d) Diosgenin
Ans: (d) Diosgenin
Q9 One of the important purpose of Functional Proteomics is :
(a) To obtain a 3D structure of all the proteins
(b) To identify protein networks in nuclear pore complex
(c) To characterise all protein-protein interactions
(d) To identify disease-specific proteins
Ans: (b) To identify protein networks in nuclear pore complex.
Q10 The vector that was used in the first cloning experiment involving mammalian host cells was _________________
(a) Adenovirus
(b) Papillomavirus
(c) Retrovirus
(d) SV 40 virus
Ans: (d) SV40
Q11 Name the autosomal recessive disorder that follows mendelian inheritance and occurs due to the deletion of 3 base pairs resulting in loss of codon 508 which codes for phenylalanine.
(a) Huntington’s disease
(b) Migraine
(c) Cystic fibrosis
(d) Alzheimer
Ans: (c) Cystic Fibrosis
Q12 Leuconostoc mesenteroides is used for the commercial production of:
(a) Dextran
(b) Ethanol
(c) Penicillin
(d) Amylases
Ans: (a) Dextran
To get the complete sample paper click on the link below:
To get the solution cum marking scheme for the above-discussed sample paper click on the link below:
Also read:
