micro organisms




1).
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   
ANS: C - polyisoprenoid branched chain lipids

No answer description available for this question.

2).
The oldest eukaryotic organisms are considered to be
A   diplomonads like Giardia   
B   archaea   
C   fungi   
D   animals   
ANS: B - archaea

No answer description available for this question.

3).
The phospholipids present in cytoplasm membrane of eubacteria is mainly
A   phosphoglycerides   
B   polyisoprenoid   
C   polyisoprenoid   
D   none of these   
ANS: A - phosphoglycerides

No answer description available for this question

4).
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   
ANS: A - Koch and Pasteur

No answer description available for this question

5).
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   
ANS: B - absence of a nuclear membrane temperature

No answer description available for this question

6).
Mycoplasmas are different from the other prokaryotes by
A   presence of chitin in cell walls   
B   presence of murrain in cell walls   
C   presence of proteins in cell walls   
D   absence of cell wall itself   
ANS: D - absence of cell wall itself

No answer description available for this question

7).
Evolutionary relationships between groups of organisms are determined using which of the following type of information?
A   Comparisons of nucleotide sequence   
B   Comparisons of biochemical pathways   
C   Comparisons of structural features   
D   All of the above   
ANS: D - All of the above

No answer description available for this question

8).
Which of the following is not true for eukaryotic cells?
A   Nucleus is bounded by nuclear membrane   
B   Chromosomes contain histones   
C   Chloroplasts and mitochondria contains 70S ribosomes   
D   Gas vacuoles are present   
ANS: D - Gas vacuoles are present

No answer description available for this question

9).
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   
ANS: C - 80S ribosomes are distributed in cytoplasm

No answer description available for this question

10).
Gram staining was introduced by
A   Christian gram   
B   Alfred Gram   
C   Robertcook   
D   Louis Pasteur   
ANS: A - Christian gram

No answer description available for this question


H2O