➨ Micro Organisms - Microbiology Section 1

1. The phospholipids present in cytoplasm membrane of the archaeo-bacteria is

A. phosphoglycerides B. polyisoprenoid C. polyisoprenoid branched chain lipids D. none of the above - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

2. The oldest eukaryotic organisms are considered to be

A. diplomonads like Giardia B. archaea C. animals D. fungi - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

3. The phospholipids present in cytoplasm membrane of eubacteria is mainly

A. phosphoglycerides B. polyisoprenoid C. phospholipoprotein D. none of these - Answer&Explanation Answer:Option A Explanation : No answer description available for this question. View Answer

4. Which were the investigators lived at the same time?

A. Darwin and Woese B. Koch and Pasteur C. Van Leeuenhoek and Ricketts D. Berg and Hooke - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

5. The unifying feature of the archaea that distinguishes them from the bacteria is

A. habitats which are extreme environments with regard to acidity B. absence of a nuclear membrane temperature C. presence of a cell wall containing a characteristic outer membrane D. cytoplasmic ribosomes that are 70S - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

6. Mycoplasmas are different from the other prokaryotes by

A. presence of chitin in cell walls B. presence of murrain in cell walls C. absence of cell wall itself D. presence of proteins in cell walls - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

7. Evolutionary relationships between groups of organisms are determined using which of the following type of information?

A. Comparisons of nucleotide sequences B. Comparisons of biochemical pathways C. Comparisons of structural features D. All of the above - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

8. Which of the following is not true for eukaryotic cells?

A. Nucleus is bounded by nuclear membrane B. Chromosomes contain histones C. Chloroplasts and mitochondria contains 70S ribosomes D. Gas vacuoles are present - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

9. 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 - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

10. Gram staining was introduced by

A. Christian gram B. Alfred Gram C. Robertcook D. Louis Pasteur - Answer&Explanation Answer:Option A Explanation : No answer description available for this question. View Answer

11. Which of the following is considered the most unifying concept in biology?

A. Taxonomy B. Evolution C. Anatomy D. Genetics - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

12. Various bacterial species can be subdivided into

A. subspecies B. biovarieties C. serovarieties D. all of these - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

13. Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?

A. Homeostasis B. Tissues C. Reproduction D. Molecules - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

14. 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 - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

15. Mycoplasmas, rickettsiae, and chlamydiae are

A. types of fungi B. small bacteria C. species of protozoa D. forms of viruses - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

16. Which of the following structure is absent in eukaryotic cells?

A. Mitochondria B. Chloroplasts C. Golgi structure D. Mesosome - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

17. Who was the inventor of the Petri dish?

A. R.J. Petri, an assistant of R. Koch B. A famous French cook C. Italian glass blower from Petri, Italy D. None of the above - Answer&Explanation Answer:Option A Explanation : No answer description available for this question. View Answer

18. Which one is not studied in microbiology?

A. Bacteria B. Animal behaviour C. Fungi D. Algae - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

19. A characteristic of protein synthesis in both the archaea and eukarya is

A. transcription and translation are coupled B. translation is inhibited by diphtheria toxin C. proteins are synthesized from D-, rather than L-, isomers of amino acids D. the initiator tRNA is charged with N-formyl-methionine - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

20. Cell theory includes all of the following except

A. all organisms are composed of one or more cells B. the cell is the most primitive form of life C. the cell is the structural unit of life D. cells arise by division of preexisting cells - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

21. The five-kingdom system of classification was set up by

A. Louis Pasteur B. Robert Whittaker C. Robert Koch D. Masaki Ogata - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

22. The membranes of which domains are chemically the most similar?

A. Archaea and Bacteria B. Bacteria and Eukarya C. Eukarya and Archaea D. membranes of all three domains are chemically identical - Answer&Explanation Answer:Option B Explanation : No answer description available for this question. View Answer

23. Primary differences between cilia and flagella are

A. arrangement of microtubules B. length and location of basal bodies C. how the microtubules are fused to each other D. number, length and direction of force - Answer&Explanation Answer:Option D Explanation : No answer description available for this question. View Answer

24. All membranes of free-living organisms have phospholipid bilayers, but exception is

A. bacteria B. fungi C. archaea D. protozoa - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer

25. All of the following are features of prokaryotes except

A. nitrogen fixation B. photosynthesis C. sexual reproduction D. locomotion - Answer&Explanation Answer:Option C Explanation : No answer description available for this question. View Answer