Kerala PSC Previous Years Question Paper & Answer

Title : Scientific Assistant (Biology) NCA- SC) - Kerala Police Service Forensic Science Laboratory
Question Code : A

Page:12


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Scientific Assistant (Biology) NCA- SC) - Kerala Police Service Forensic Science Laboratory ' And exam conducted in the year 2021. And Question paper code was '1/2021/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.

page: 12 out of 14
Excerpt of Question Code: 1/2021/OL

Question86:,You are tasked with cloning of a plant gene in bacterial systems and later its expression in cultured cells. Which type of vector you should select for easy cloning and
expression 7

‘AcPhage Vector

B:-Cosmid Vector

C-Shuttle Vector

0

Correct Answer: Option-C
Question87:-The 705 ribosomes that can be seen in Chloroplast and Mitochondria is
॥ An evidence for Endosymbiont Hypothesis on origin of Eukaryotes

1. Prokaryatic ancestor of Chloroplast and Mitochondria
I. Less efficient in translation comparing to 805 ribosomes in the cytoplasm

‘Act and I
Bell and Il
0
Det. and it

Correct Answer: Option-C

‘Question88:-Arrange the following algae based on its evolutionary advancement of thallus
1. Volvox

ரி. பிண்டி
11. Chlamydomonas
1४ Ulva
७ Chara

,1ھ
3:01,۱۷
6:۷۷
‎Dell, மம‏
‎Correct Answer: 8‏
‎‘Question89:-What properties of RNA support the hypothesis that it was the first self-replicating molecule in early evolution 7‏
‎٠١ ॥ can transfer amino acids for protein synthesis,‏
‎store and pass information‏ مق 11 ‎Il‏
‎can catalyse its own synthesis‏ 11.10

IV. 1: can form 3D structures
۷ ۱۴ has catalytic activity

Act. tlland V
۷
0

Dell Ill and ४

Correct Answer:- Option-D
Question90:-The small polar molecules, ions and macromolecules (proteins and RNAS) can travel between the nucleus and the cytoplasm through
‘Ac Membrane Channels,
Bs-Inter membrane transporters
ಆ ಫೃ
D-Nuclear pore complexes
Correct Answer:- Option-D
Question91:-One among the following technique is a Taxon specific technique that can assist in identification of Taxon like species
‏۸۶۵ھ‎
‎नि;
‎CDNA Barcoding
DDNA Fingerprinting

Correct Answer: Option-C

Question92:-You are entrusted to analyse leaf sample for the presence of a protein followed by its structure determination. Which are the techniques you can use for these experiments
7

1. Wester Blotting
॥. 20 PAGE

Ml, MALDI-TOF MS

1४ X Ray Crystallography

01ھ
‎Bel, ॥ and IV‏

Col Ill and ಗಿ/

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