🦠 Microbiology Solved MCQs with Answers

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

1927 solved MCQs

Sexual reproduction in the Protozoa occurs most commonly byAnswer: conjugation Organisms with complex life cycles which include a mammalian host and an insect host and involves schizogony as part of the cycle belong to which phylum of Protozoa?Answer: Apicomplexa A protozoan is defined asAnswer: motile eukaryotic unicellular photosynthetic protist Organisms which have spore-forming stage in their life cycle and lack special locomotory organelles belong to which phylum of Protozoa?Answer: Apicomplexa Members of the Protozoa may motile by all of the following methods exceptAnswer: Gliding by slime secretion Most commonly asexual reproduction in the Protozoa is byAnswer: Binary fission Which of the following describes the function of a phagocytic vacuole?Answer: Sites of food digestion Which of the following describes the function of a secretory vacuole?Answer: Contain specific enzymes that perform various functions Organisms are parasitic and have a resistant spore with one to six coiled polar filaments belong to which phylum of Protozoa?Answer: Myxozoa Which of the following is least likely to get in or on a protozoan such as a diplomonad or trichomonad?Answer: Rigid polysaccharide cell wall Members of which phylum of Protozoa are being considered as biological control agents for certain insects?Answer: Microspora Protozoa are generally notAnswer: Eukaryotic Number of motility structures on flagellated cells isAnswer: Lesser than ciliated cells Protozoa have several types of vacuoles.The function of a contractile vacuole is toAnswer: Maintain osmotic balance by continuous water expulsion The number of members of the division Phaeophyta that live in freshwater habitatsAnswer: Is lesser than the number of members of the division Chlorophyta that live in freshwater habitats Which of the following is correct?Answer: All members of algae are also members of photolithotrophic autotrophs, but not all members of photolithotrophic autotrophs are members of algae Bioluminescence is a phenomenon associated withAnswer: Pyrrophyta Which of the following algal divisions is characterized by possession of chlorophylls A and B, starch as the energy storage material, cellulosic cell walls and live in freshwater and marine habitats?Answer: Chlorophyta Which algal division is divided up into three main groups consisting of the golden-brown algae, the yellow-green algae and the diatoms?Answer: Chrysophyta Zooxanthellae are algal symbiont that live within coral reef animals. These algae belong toAnswer: Pyrrophyta All algae possessAnswer: Both Algae is a nonvalid taxinomic term that refers toAnswer: Eukaryotic organisms that have chlorophyll a and produce O₂ Which of the following algal divisions is characterized by possession of chlorophylls A and B, paramylon as the energy storage material, and the presence of a pellical instead of a cell wall?Answer: Euglenophyta Laminarin is an energy storage material characteristic ofAnswer: Phaeophyta Chlamydomonas and Volvox are similar becauseAnswer: Both Characteristics used to place algae into divisions include all of the following exceptAnswer: All of the above Which algal division never produces motile, flagellated cells among any of its members?Answer: Rhodophyta Starch is an energy storage material characteristic ofAnswer: Rhodophyta Number of flagella produced by motile cells inAnswer: Members of the Phaeophyta is approximately equal to members of the Oomycota The algae Chlamydomonas demonstrates a complex life cycle that switches between haploid and diploid forms. This life cycle is calledAnswer: An alternation of generations