🦠 Microbiology Solved MCQs with Answers

Practice 1927 approved 🦠 Microbiology questions with verified answers from the 🧬 Medical Science subject for Pakistan exams.

1927 solved MCQs

A universal donor has the blood group _____?Answer: O- The phospholipids present in cytoplasm membrane of the archaeo-bacteria isAnswer: polyisoprenoid branched chain lipids The oldest eukaryotic organisms are considered to beAnswer: diplomonads like Giardia The phospholipids present in cytoplasm membrane of eubacteria is mainlyAnswer: phosphoglycerides Which were the investigators lived at the same time?Answer: Koch and Pasteur The unifying feature of the archaea that distinguishes them from the bacteria isAnswer: absence of a nuclear membrane temperature Mycoplasmas are different from the other prokaryotes byAnswer: absence of cell wall itself Evolutionary relationships between groups of organisms are determined using which of the following type of information?Answer: All of the above Which of the following is not true for eukaryotic cells?Answer: Gas vacuoles are present Which of the following is not true for prokaryotic organism?Answer: 80S ribosomes are distributed in cytoplasm Gram staining was introduced byAnswer: Christian gram Which of the following is considered the most unifying concept in biology?Answer: Evolution Various bacterial species can be subdivided intoAnswer: all of these Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?Answer: Molecules 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?Answer: It utilizes energy Mycoplasmas, rickettsiae, and chlamydiae areAnswer: small bacteria Which of the following structure is absent in eukaryotic cells?Answer: Mesosome Who was the inventor of the Petri dish?Answer: R.J. Petri, an assistant of R. Koch Which one is not studied in microbiology?Answer: Animal behaviour A characteristic of protein synthesis in both the archaea and eukarya isAnswer: proteins are synthesized from D-, rather than L-, isomers of amino acids Cell theory includes all of the following exceptAnswer: the cell is the most primitive form of life The five-kingdom system of classification was set up byAnswer: Robert Whittaker The membranes of which domains are chemically the most similar?Answer: Bacteria and Eukarya Primary differences between cilia and flagella areAnswer: number, length and direction of force All membranes of free-living organisms have phospholipid bilayers, but exception isAnswer: archaea All of the following are features of prokaryotes exceptAnswer: sexual reproduction Which of the following structures is the smallest?Answer: Hydrogen atom Which of the following is/are included in Kingdom Prokaryotae?Answer: Bacteria Which of the following may account for the small size of the cells?Answer: All of the above Genetic and biochemical similarities between contemporary cyanobacteria and eukaryotic chloroplasts are accepted to mean thatAnswer: eukaryotes evolved from archaea