Kerala PSC Previous Years Question Paper & Answer

Title : Microbiologist - Food Safety (Govt. Analytical Laboratory)
Question Code : A


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Microbiologist - Food Safety (Govt. Analytical Laboratory) ' And exam conducted in the year 2022. And Question paper code was '27/2022'. 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: 9 out of 16
Excerpt of Question Code: 27/2022







Receptors of peptide hormones are
A) Cytoplasmic B) Nuclear ©) Transmembrane 0) All of the above

Scientist have identified a new species of plant from Western Ghats. To study its
uniqueness, they isolated the DNA and prepared a cot value curve. Which of the
following information is not possible to get, on analyzing the cot value curve ?

A) Idea about genome size and complexity

B) Understanding the relative proportion of single copy and repetitive sequence

C) Idea on how many times a sequence repeats itself

D) Determination of exact GC content

Which of the following molecule is derived from cholesterol ?
A) Prostaglandin ட) Taurocholic acid 0) Somatostatin D) Stearic acid

Ammonium sulphate precipitation is commonly employed during the isolation of proteins.
Which of the following technique can be used to remove ammonium sulphate from the
solution after ammonium sulphate precipitation ?

A) Lyophilization B) Chromatography C) Dialysis D) Electrophoresis

In some inflammatory and autoimmune diseases, some arginine residues in histone

proteins are replaced by citrulline residues. These altered proteins can be easily
separated by electrophoresis. What is the change you can observe in their electrophoretic
mobility ?
Arginine Citrulline
ചേ ௦-௦
+ +
ಗ (५१५०
000 ` 000 `
A) Citrullinated proteins move faster than the native proteins towards the anode

B) Citrullinated proteins move slower than the native proteins towards the anode
C) Citrullinated proteins give multiple bands when compared to the native proteins
D) None of the above

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