Bacteria Test 2

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:Which of the following is not found in bacteria

Answers Choices:

Endoplasmic reticulum

Cell wall

DNA

Cell cytoplasm

Questions 2 of 50

Question:The microflora occurring in largest number in soil are

Answers Choices:

Grasses

Fungi

Bacteria

Algae

Questions 3 of 50

Question:Which of the following statements is correct

Answers Choices:

E.coli gram -ve bacterium while Rhizobium japonicum is gram +ve bacterium

Both E.coli and Rhizobium japonicum are gram +ve

Both E.coli and Rhizobium japonicum are gram -ve

E.coli is gram +ve, Rhizobium japonicum is gram -ve

Questions 4 of 50

Question:Which of the following compounds are decomposed during putrefaction

Answers Choices:

Proteins

Fats

Carbohydrates

None

Questions 5 of 50

Question:Branched chain lipids occur in the cell membranes of

Answers Choices:

Archaebacteria

Mycoplasma

Actinomycetes

Streptomyces

Questions 6 of 50

Question:Naked DNA is that which is

Answers Choices:

Covered by nuclear envelope

Present in Nucleus

Associated with histone proteins

Not associated with histone proteins

Questions 7 of 50

Question:Under which of the following condition a Gram positive bacteria turns Gram negative

Answers Choices:

Defective staining technique

Changed pH of medium

Aged bacterial culture

All the above

Questions 8 of 50

Question:A bacterium which is commonly present in the intestine of man and animal is

Answers Choices:

Bacillus'brevis

Escherichia coli

Streptococcus lactis

None of these

Questions 9 of 50

Question:Mucopeptide in cell wall is more in

Answers Choices:

Gram-positive bacteria

Gram-negative bacteria

Cyanobacteria

Bacteriophage

Questions 10 of 50

Question:An example of iron bacteria is

Answers Choices:

Beggiatoa

Geobacillus

Ferrobacillus

None of these

Questions 11 of 50

Question:Smallest bacteria is

Answers Choices:

Spirillium

Bacillus

Dialister

None of these

Questions 12 of 50

Question:Bacterial cell divides in every minute it takes one hour to fill up a cup. How much time will be taken to fill half the cup

Answers Choices:

59 minutes

30 minutes

60 minutes

29 minutes

Questions 13 of 50

Question:A bacterial cell undergoes binary fission every twenty minutes. Starting with a single bacterium how many bacteria will be produced at the end of 3 hours

Answers Choices:

128

256

512

1022

Questions 14 of 50

Question:Transfer of genetic information from one bacterium to another in the transduction process is through

Answers Choices:

Physical contact between donor and recipient strains

Conjugation between opposite strain bacterium

Bacteriophages released from the donor bacterial strain

Another bacterium having special organ for conjugation

Questions 15 of 50

Question:Which of the following is free-living aerobic non-photosynthetic nitrogen fixing bacterium

Answers Choices:

Rhizobium

Azotobacter

Nostoc

Azospirillum

Questions 16 of 50

Question:Which of the following groups of plants are highly useful in increasing soil fertility

Answers Choices:

Red algae

Fungi

Bacteria

Bryophytes

Questions 17 of 50

Question:Sugary solution is changed to vinegar by the action of

Answers Choices:

Azotobacter

Diplococcus

Bacillus subtilis

Acetobacter aciti

Questions 18 of 50

Question:Actinomycetes which is a symbiotic nitrogen fixing organism in many plants

Answers Choices:

Streptomyces

Anabaena

Frankia

Rhizobium

Questions 19 of 50

Question:Exposure to light The bacteria which convert \(N{O_3}\)\( \to \) Free \({N_2}\) are called as

Answers Choices:

Nitrifying bacteria

Ammonifying bacteria

Denitrifying bacteria

None of these

Questions 20 of 50

Question:A large number of organic compounds can be decomposed by

Answers Choices:

Chemoorgano

Pseudomonas

Acetobacter

Mycoplasma

Questions 21 of 50

Question:Fermentation is by

Answers Choices:

All micro organism

All fungi

All bacteria

Some fungi and some bacteria

Questions 22 of 50

Question:Plasmid are used as carrier because

Answers Choices:

It has antibiotic resistance genes

Its both ends are replication points

It can go between eukaryotic and prokaryotic cells

It is circular DNA which has capacity to bind eukaryote DNA

Questions 23 of 50

Question:The bacteria {Clostridium botulinum) that cause botulism are

Answers Choices:

Obligate aerobes

Facultative aerobes

Obligate anaerobes

Facultative anaerobes

Questions 24 of 50

Question:Triple antigen or DPT is meant for

Answers Choices:

A vaccine against malaria, typhoid and cancer

Mixture of viruses that causes common cold, polio and hepatitis

A vaccine against polio, rabies and hepatitis

A vaccine against tetanus, whooping cough and diptheria

Questions 25 of 50

Question:Tuberculin produced by the bacterium causing tuberculosis is

Answers Choices:

Hormone

Enzyme

Exotoxin

Endotoxin

Questions 26 of 50

Question:T.B. is caused by

Answers Choices:

Shigella bacteria

Mycobacterium

Salmonella

Virus

Questions 27 of 50

Question:Leprosy is caused by

Answers Choices:

Spirillum

Flagellum

Mycobacteria

Pseudomonas

Questions 28 of 50

Question:The poisonous substances commonly produced by bacteria are known as

Answers Choices:

Toxin (Exotoxins)

Auxins

Antibiotic

Antitoxins

Questions 29 of 50

Question:Bacterial blight of rice is caused due to

Answers Choices:

Xanthomonas oryzae

Helminthosporium oryzae

Pseudomonas falcatum

Xanthomonas falcatum

Questions 30 of 50

Question:Blebs can be noted in

Answers Choices:

Spirogyra

Mycoplasma galisepticum

Pseudomonas cola

None of these

Questions 31 of 50

Question:Who recorded pleuropneumonia in catties

Answers Choices:

Pasteur

Twort

Knoll and Ruska

Nocard and Roux

Questions 32 of 50

Question:"Dodder" can transmit

Answers Choices:

Mycoplasmal diseases

Viral diseases

Both (1) and (2)

None of these

Questions 33 of 50

Question:Cell of mycoplasma contains

Answers Choices:

RNA

DNA

Both RNA and DNA

None of these

Questions 34 of 50

Question:The 'Witches broom' of legumes is caused by a

Answers Choices:

Virus

Mycoplasma

Bacterium

Fungus

Questions 35 of 50

Question:Which of the following are intermediate between viruses and bacteria

Answers Choices:

Mycoplasma

Spirilla

Virons

Voriola

Questions 36 of 50

Question:Which of the following has polar nodule on both the ends

Answers Choices:

Akinetes

Horniogonia

Heterocysts

None of these

Questions 37 of 50

Question:Which of the following shows the absence of chlorophyll 'b'

Answers Choices:

Green algae

Red algae

Blue-green algae

Brown algae

Questions 38 of 50

Question:Which of the following is used as green manure

Answers Choices:

Bacteria

Mycoplasma

Nostoc

None of these

Questions 39 of 50

Question:Which of the following granules are present in cyanobacteria

Answers Choices:

Polyglucon granules

Carboxysomes

Gas vacuoles

All the above

Questions 40 of 50

Question:According to Bradley and Carr, the nitrogen fixation takes place in

Answers Choices:

Akinetes

Vegetative cells

Heterocysts

All the above

Questions 41 of 50

Question:In Nostoc the heterocysts are

Answers Choices:

Terminal

Intercalary

Both (1) and (2)

None of these

Questions 42 of 50

Question:Blue-green algae belong to

Answers Choices:

Myxomycetes

The eukaryote

The prokaryota

Neither the eukaryota nor the prokaryota

Questions 43 of 50

Question:During rainy seasons, the ground becomes slippery due to dense growth of

Answers Choices:

Lichens

Bacteria

Green algae

Cyanobacteria

Questions 44 of 50

Question:Hormogonia are the vegetatively reproducing structures of

Answers Choices:

Ulothrix

Spirogyra

Oscillatoria

Chlamydomonas

Questions 45 of 50

Question:Nitrogenase enzyme is found in Nostoc in the cell of

Answers Choices:

Vegetative

Heterocyst

Both (1) and (2)

None of these

Questions 46 of 50

Question:Cyanobacteria of great nutritive value is

Answers Choices:

Gleocapsa

Scytonema

Stigonema

Spirulina

Questions 47 of 50

Question:The characteristic of blue green algae is

Answers Choices:

DNA without histone

Nuclear membrane absent

70S ribosomes

All of the above

Questions 48 of 50

Question:Legume-Rhizobium symbiosis Cells of Nostoc are

Answers Choices:

Moniliform

Fusiform

Conical

None of the above

Questions 49 of 50

Question:Hormogonia of cyanobacteria are

Answers Choices:

Spore producing organs

Products of syngamy

Fragmented trichomes

Cells adjacent to heterocyst

Questions 50 of 50

Question:Which of the following statements is right

Answers Choices:

Fronds are found in bryophytes

Multiciliate sperms are found in angiosperms

Diatoms produce basidiospores

Heterocysts are found in Nostoc