Test Your Knowledge - Free MCQ PRACTICE
by Saksham Chaudhry : Paschim Vihar, New Delhi 110063 T: 1142316457, 9810570740
A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. Parasitic infection/s frequently observed in HIV disease is / are.
A. Cryptosporidiosis 
B. Toxoplasmosis 
C. Isosporiasis 
D. All of these 

2. Which of the following is not true for prokaryotic organism?
A. Nucleus is not bounded by nuclear membrane 
B. Chromosomes does not contain histones 
C. 80S ribosomes are distributed in cytoplasm 
D. Cell wall contains peptidoglycan as one of the major component 

3. Which algal division is divided up into three main groups consisting of the golden-brown algae, the yellow-green algae and the diatoms?
A. Chlorophyta 
B. Chrysophyta 
C. Phaeophyta 
D. Pyrrophyta 

4. Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean that
A. Cyanobacteria arose from chloroplasts which escaped from plant cells 
B. Eukaryotes evolved from bacteria 
C. Oxygenic photosynthesis first evolved in eukaryotes 
D. Eukaryotes evolved from archaea 

5. Which of the following statement defines a replicon?
A. A DNA molecule that is able to replicate and be maintained 
B. The enzyme responsible for transposition 
C. A DNA molecule that encodes pili for conjugation 
D. A DNA template which is used in transcription 

6. McFadyean's reaction is employed for the presumptive diagnosis of
A. Anthrax 
B. Tetanus 
C. Typhoid 
D. All of these 

7. Which of the following is a drug that interferes with the process of DNA production in the virus that causes genital herpes?
A. Erythromycin 
B. Vancomycin 
C. Amantadine 
D. Acyclovir 

8. When the fermentation of fructose results in the bitter product mannitol, the fermentation is sometime termed as-
A. Mannkic 
B. Mannitic 
C. Amertume 
D. None of these 

9. Example of a Saprophytic bacteria is
A. M xenopi 
B. Msmegmatis 
C. Mycobacterium chelonei 
D. M marinum 

10. The most commonly used medium for the build up of cultures and the production of baker's yeast consist of
A. Molasses and minerals 
B. Molasses, minerals and salts 
C. Molasses 
D. Molasses, lactose 

11. Culture of tubercle bacilli may be positive if number of bacteria in the specimen is
A. As few as 1-4 per ml 
B. As few as 10-100 per ml 
C. As few as 125-200 per ml 
D. As few as 5-9 per ml 

12. The ability of FADH to be oxidized is __________ than the ability of FAD to be oxidized.
A. Greater 
B. Lesser 
C. Approximately equal 
D. Half 

13. The numbers of nuclear divisions involved in a ciliate undergoing binary fission is
A. Greater than conjugation 
B. Lesser than conjugation 
C. Equal to conjugation 
D. None of these 

14. The most important organism involved in manufacture of Koji is
A. Aspergillus oryzae 
B. Aspergillus soyae 
C. Both A and B 
D. Lactobacillus lactis 

15. Sputum can be disinfected by all EXCEPT
A. Autoclaving 
B. Boiling 
C. Cresol 
D. Chlorhexidine 

16. A newly discovered microscopic structure is hypothesized to be a living organism. Which of the following lines of evidence would support the contention that this organism may be alive?
A. It contains DNA 
B. It is made of a single cell 
C. It utilizes energy 
D. All of these 

17. Which of the following is/are not a gram-positive bacteria?
A. Streptococci 
B. Pseudomonas 
C. Mycobacteria 
D. None of these 

18. Which of the following is correct for isoantigens?
A. They are antigens found in all members of different species 
B. They are antigens found in some members of a species 
C. They are antigens found in some members of different species 
D. They are antigens found in all members of a species 

19. The efficiency of amplification in PCR in later cycles is reduced due to
A. Reduction in substrate concentration 
B. Insufficient enzyme and time to synthesize mass quantity of DNA 
C. Build up of PCR product which competes with primers for hybrid formation 
D. All of these 

20. Reduction is the
A. Loss of proton 
B. Gain of electron 
C. Loss of electron 
D. Gain of protons 

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