1. The phospholipids present in cytoplasm membrane of the archaeo-bacteria is
- phosphoglycerides
- polyisoprenoid
- polyisoprenoid branched chain lipids
- none of the above
2. The oldest eukaryotic organisms are considered to be
- diplomonads like Giardia
- archaea
- fungi
- animals
3. The phospholipids present in cytoplasm membrane of eubacteria is mainly
- phosphoglycerides
- polyisoprenoid
- phospholipoprotein
- D. none of these
4. Which were the investigators lived at the same time?
- Koch and Pasteur
- Darwin and Woese
- Van Leeuenhoek and Ricketts
- Berg and Hooke
5. The unifying feature of the archaea that distinguishes them from the bacteria is
- habitats which are extreme environments with regard to acidity
- absence of a nuclear membrane temperature
- presence of a cell wall containing a characteristic outer membrane
- cytoplasmic ribosomes that are 70S
6. Mycoplasmas are different from the other prokaryotes by
- presence of chitin in cell walls
- presence of murrain in cell walls
- presence of proteins in cell walls
- absence of cell wall itself
7. Evolutionary relationships between groups of organisms are determined using which of the following type of information?
- Comparisons of nucleotide sequences
- Comparisons of biochemical pathways
- Comparisons of structural features
- All of the above
8. Which of the following is not true for eukaryotic cells?
- Nucleus is bounded by nuclear membrane
- Chromosomes contain histones
- Chloroplasts and mitochondria contains 70S ribosomes
- Gas vacuoles are present
9. Which of the following is not true for prokaryotic organism?
- Nucleus is not bounded by nuclear membrane
- Chromosomes does not contain histones
- 80S ribosomes are distributed in cytoplasm
- Cell wall contains peptidoglycan as one of the major component
10. Gram staining was introduced by
- Christian gram
- Alfred Gram
- Robertcook
- Louis Pasteur
11. Gram staining was introduced by
- Christian gram
- Alfred Gram
- Robertcook
- Louis Pasteur
12. Various bacterial species can be subdivided into
- subspecies
- biovarieties
- serovarieties
- all of these
13. Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?
- Homeostasis
- Tissues
- Reproduction
- Molecules
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?
- It contains DNA
- It is made of a single cell
- It utilizes energy
- All of these
15. Mycoplasmas, rickettsiae, and chlamydiae are
- types of fungi
- small bacteria
- species of protozoa
- forms of viruses
16. Which of the following structure is absent in eukaryotic cells?
- Mitochondria
- Chloroplasts
- Golgi structure
- Mesosome
17. Who was the inventor of the Petri dish?
- R.J. Petri, an assistant of R. Koch
- A famous French cook
- Italian glass blower from Petri, Italy
- None of the above
18. Which one is not studied in microbiology?
- Bacteria
- Animal behaviour
- Fungi
- Algae
19. A characteristic of protein synthesis in both the archaea and eukarya is
- transcription and translation are coupled
- translation is inhibited by diphtheria toxin
- proteins are synthesized from D-, rather than L-, isomers of amino acids
- the initiator tRNA is charged with N-formyl-methionine
20. Cell theory includes all of the following except
- all organisms are composed of one or more cells
- the cell is the most primitive form of life
- the cell is the structural unit of life
- cells arise by division of preexisting cells
