MCQOPTIONS
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MCQOPTIONS
This section includes 126 Mcqs, each offering curated multiple-choice questions to sharpen your Microbiology knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
What is Mycology? |
| A. | Study of viruses |
| B. | Study of nucleic acid |
| C. | Study of bacteria |
| D. | Study of fungi |
| Answer» E. | |
| 102. |
Which of the following organelles contain DNA, divides and possesses some degree of autonomy? |
| A. | Golgi apparatus |
| B. | Ribosome |
| C. | Chloroplast |
| D. | Peroxisomes |
| Answer» D. Peroxisomes | |
| 103. |
Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean that |
| A. | eukaryotes evolved from bacteria |
| B. | eukaryotes evolved from archaea |
| C. | oxygenic photosynthesis first evolved in eukaryotes |
| D. | cyanobacteria arose from chloroplasts which escaped from plant cells |
| Answer» C. oxygenic photosynthesis first evolved in eukaryotes | |
| 104. |
All of the following individuals contributed to cell theory except |
| A. | Robert Hooke |
| B. | Matthias Schleiden |
| C. | Theodor Schwann |
| D. | Rudolf Virchow |
| Answer» B. Matthias Schleiden | |
| 105. |
Which were the investigators lived at the same time? |
| A. | Koch and Pasteur |
| B. | Darwin and Woese |
| C. | Van Leeuenhoek and Ricketts |
| D. | Berg and Hooke |
| Answer» B. Darwin and Woese | |
| 106. |
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» C. presence of a cell wall containing a characteristic outer membrane | |
| 107. |
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» D. none of the above | |
| 108. |
The oldest eukaryotic organisms are considered to be |
| A. | diplomonads like Giardia |
| B. | archaea |
| C. | fungi |
| D. | animals |
| Answer» C. fungi | |
| 109. |
The phospholipids present in cytoplasm membrane of eubacteria is mainly |
| A. | phosphoglycerides |
| B. | polyisoprenoid |
| C. | phospholipoprotein |
| D. | none of these |
| Answer» B. polyisoprenoid | |
| 110. |
The word cell was first used by |
| A. | Robert Hooke |
| B. | Theodor Schwann |
| C. | Louis Pasteur |
| D. | Ronald Ross |
| Answer» B. Theodor Schwann | |
| 111. |
Most microbial structures and enzymes are composed of |
| A. | lipids |
| B. | proteins |
| C. | carbohydrates |
| D. | lipids and carbohydrates |
| Answer» C. carbohydrates | |
| 112. |
Which of the following structures is the smallest? |
| A. | Viriod |
| B. | Hydrogen atom |
| C. | Bacterium |
| D. | Mitochondrion |
| Answer» C. Bacterium | |
| 113. |
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» E. | |
| 114. |
Which of the following is not found in the kingdom Monera? |
| A. | Organelles |
| B. | Organized cell structure |
| C. | Ability to reproduce |
| D. | Ability to use energy |
| Answer» B. Organized cell structure | |
| 115. |
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» C. the cell is the structural unit of life | |
| 116. |
All the following are considered eukaryotes except |
| A. | archaea |
| B. | fungi |
| C. | protozoa |
| D. | humans |
| Answer» B. fungi | |
| 117. |
Various bacterial species can be subdivided into |
| A. | subspecies |
| B. | biovarieties |
| C. | serovarieties |
| D. | all of these |
| Answer» E. | |
| 118. |
Who discovered the bacteria that cause cholera? |
| A. | Pierre Berthelot |
| B. | Robert Koch |
| C. | Louis Pasteur |
| D. | Rudolf Virchow |
| Answer» C. Louis Pasteur | |
| 119. |
The Archaea include all of the following except |
| A. | methanogens |
| B. | halophiles |
| C. | thermoacidophiles |
| D. | cyanobacteria |
| Answer» E. | |
| 120. |
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» B. A famous French cook | |
| 121. |
Eukaryotic micro organisms include |
| A. | protozoa |
| B. | fungi |
| C. | algae |
| D. | all of these |
| Answer» E. | |
| 122. |
Which of the following is considered the most unifying concept in biology? |
| A. | Taxonomy |
| B. | Anatomy |
| C. | Genetics |
| D. | Evolution |
| Answer» E. | |
| 123. |
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» D. the initiator tRNA is charged with N-formyl-methionine | |
| 124. |
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» D. Cell wall contains peptidoglycan as one of the major component | |
| 125. |
Eukaryotic cell organelles first emerged |
| A. | from a specialized lineage of cells within the kingdom Protista |
| B. | when prokaryotes engulfed each other and became interdependent |
| C. | when bacteria made their first attempts at reproduction |
| D. | just before the origin of the animal and fungal kingdoms |
| Answer» C. when bacteria made their first attempts at reproduction | |
| 126. |
Which of the following sequences has helped in identifying eukaryotes, eubacteria and archeabacterial cell types? |
| A. | Signature sequence |
| B. | Signal sequence |
| C. | Shine-Dalgarno sequence |
| D. | Amino acid sequence |
| Answer» B. Signal sequence | |