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PPSC Lecturer Biology Test 45 Online Preparation MCQs

Lecturer Biology MCQs / Biology MCQs, Biomolecules, Cell cycle and Cell divisions, FPSC Lecturer Biology mcqs, Nucleic acids and Enzymes, ppsc Biology MCQs, Ppsc lecturer Biology, ppsc past papers of Biology, Proteins

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There will be 25 multiple choice question in the test.
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Test Instructions:-
Test Name	Lecturer Biology
Subject	Biology Test 45
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

PPSC LECTURER OF BIOLOGY TEST NO. 45

1 / 25

Find out the incorrect pair:

t - RNA - anticodon

DNA - Place for the protein synthesis

r - RNA - Ribosome structure

m-RNA - genetic codon

2 / 25

Pyrenoids are made up of

Lateral protein and surrounded by lipid layer

Central protein and starch layer

Central Nucleic acid surrounded by protein layer

Central starch and surrounded by protein layer

3 / 25

Which group is correct for the reaction takes place on enzyme at higher and lower temperature sequentially ?

Inactive and denaturation

Inactive and damage

Degerate and Inactive

Denaturation and inactive

4 / 25

Which structure is responsible for the active site of an enzyme ?

Its three dimensional structure

Its amphoteric property

Activation energy level of a reaction

Its colloidal form

5 / 25

What is Ribozyme?

Ribosome + r - RNA

r - RNA

r - RNA + protein

Enzymes made up of nucleic acid

6 / 25

Find out the correct pair of the following.

Ribozyme - Ribosome + r-RNA

Apoenzyme - none protein part of enzyme

Prosthetic group - protein part of enzyme

NADP - Co-enzyme

7 / 25

Full form of FMN :

Ferredoxin mononucleic acid

Flavin mononucleic acid

Ferredoxin mononitrite

Flavin mononucleotide

8 / 25

Nucleoprotein means:

nucleotide + protein

r - RNA + protein

t - RNA + protein

r - RNA + nucleic acid

9 / 25

By which bond two individual Ribonucleotide units are bind together ?

Co-valent bond

Hydrogen bond

Phospho di-ester bond

Peptide bond

10 / 25

Ribosomes provides the place for which reaction ?

m-RNA synthesis

DNA synthesis

Protein synthesis

Respiration

11 / 25

Which pair is correct of minerals for the activation of enolase ?

Mg, Zn, B

Mg, Ca, V

Mg, Mn, Zn

Cu, Zn, Mo

12 / 25

Under which physiological factor living organisms perform their activity ?

At low temperature and atmosphere pressure

At low temperature and high atmospheic pressure

At high temperature and low atmospheric pressure

At high temperature and atmospheric pressure

13 / 25

What enzymes do ?

Increase in the rate of reaction

B & D

Decrease in the energy level of reaction

Decrease in the rate of reaction

Increase in the energy level of reaction

14 / 25

Succinic dehydrogenase is example of which type of enzyme ?

Hydrolysis

Lyases

Transferases

Oxido-reductases

15 / 25

What is cofactor?

All of these

Apoenzyme

Non protein part of the enzyme structure

Inorganic substances

16 / 25

What is called that join the phosphate to one substrate to another substrate ?

Isomerases

Synthetase

Hydrolysis

Transferase

17 / 25

Find out incorrect pair :

Haxokinase - isomerases

Acetyle co-A enzyme synthetase-ligases

Aldolase - lyases

Maltase - hydrolases

18 / 25

Enzyme means

Biological hormone

Biological protein

Biological chemical

Biological catalyst

19 / 25

What is dehydrogenation?

Duplication of hydrogen

Joining of hydrogen

Absence of hydrogen

Donation of a hydrogen

20 / 25

Apoenzyme group is made up of what?

Protein

Nucleic acid

Carbohydrate

Lipid

21 / 25

Which type of enzyme Hexokinase is ?

Isomerases

Lyases

Transferases

Ligases

22 / 25

What is essential for performing every biochemical reaction ?

All of the given

Activation energy level

Active site

Three dimensional form

23 / 25

Zn is require for the activation of:

Carbonic Anhydrase

Glucose phosphatase

Nitrogenase

Hydrogenase

24 / 25

Full form of NAD:

Nicotinamide di-nucleotide

Nicotinamide Adenine di-nucleotide

Nucleic acid di-nucleotide

Nitric acid di-nucleotide

25 / 25

Form where Ligase enzyme gets energy in use ?

From the pyrophosphate bond of ATP

From the pyrophosphate bond of AMP

From the pyrophosphate bond of GTP

From the pyrophosphate bond of GDP

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