🦠 Microbiology Solved MCQs with Answers

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

1927 solved MCQs

Which of the following best represents the hierarchy of levels of biological classification?Answer: Kingdom, phylum, class, order, family, genus, species The three domain version of life on earth is based on theAnswer: nucleic acid sequence datav The foundation for the germ theory of disease was set down byAnswer: Louis Pasteur Most microbial structures and enzymes are composed ofAnswer: proteins The individual best remembered for bringing microbes to the world isAnswer: Antony Van Leeuenhoek Micro organisms are found in which of the following kingdom of five kingdom concept (Whittaker's classification)?Answer: All of these The first organism in most natural food chains isAnswer: a herbivore The third kingdom, protista, as suggested by E.H. Haeckel includesAnswer: all of these Eukaryotic cell organelles first emergedAnswer: when prokaryotes engulfed each other and became interdependent Who discovered the bacteria that cause cholera?Answer: Robert Koch Prokaryotic microorganism includeAnswer: bacteria All the following are basic properties of cells exceptAnswer: cells have nuclei and mitochondria Which of the following microorganisms is classified as a member of archaebacteria?Answer: Methanobacteria The idea of selective toxicity was first proposed byAnswer: Paul Ehrlich Which of the following sequences has helped in identifying eukaryotes, eubacteria and archeabacterial cell types?Answer: Signature sequence Archeal cells usually do not contain peptidoglycan, rather contain pseudo-peptidoglycan which is mainly composed ofAnswer: N-acetyltalosaminuronic acid and L-amino acids In the three domain system of classification, the traditional bacteria are placed in theAnswer: eubacteria One of the reasons for the evolutionary success of the kingdom Monera is that its members are nutritionally diverse. Which of the following(s) is/are the way(s) of obtaining energy?Answer: All of the above Carl Woese and his colleague are best known for establishingAnswer: the three domain system Which of the following is not found in the kingdom Monera?Answer: Organelles Which of the following is the most primitive?Answer: Archaeon All the following are considered eukaryotes exceptAnswer: archaea Which cell type is considered to have the oldest ancestor?Answer: they all share the same ancestor What is Mycology?Answer: Study of fungi Which of the following organelles contain DNA, divides and possesses some degree of autonomy?Answer: Chloroplast All of the following individuals contributed to cell theory exceptAnswer: Robert Hooke Eukaryotic micro organisms includeAnswer: all of these The binomial name of a microbe is composed ofAnswer: its genus name and a species modifier Which of the following is a characteristic unique to the ciliates?Answer: Both (a) and (b) Which of the following structure is present in prokaryotic cells?Answer: Mesosome