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4

Bacteria lacks:

A. cell wall

B. cytoplasm

C. ribosomes

D. endoplamic reticulum

Correct Answer :

D. endoplamic reticulum


Related Questions

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Of the following, which is not a bacterial action?

A. Sewage disposal

B. Nitrogen fixation

C. Emulsification of fat

D. None of these

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Bacteria which directly converts atmospheric nitrogen into nitrogen compounds are called

A. Nitrifying bacteria

B. Nitrogen fixing bacteria

C. Denitrifying bacteria

D. Putrefying bacteria

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4

Sexual reproduction in E. coli is known as

A. sexduction

B. transduction

C. conjugation

D. transformation

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4

Bacteria reproduce asexually by means of

A. fission

B. endospores

C. cyst

D. all of these

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Bacteria was first discovered by

A. Robert Koch

B. Louis Pasteur

C. A.V. Leeuwenhoeck

D. Robert Hooke

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4

True nucleus is absent in

A. fungi

B. algae

C. lichens

D. bacteria

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Bacteria lacks:

A. cell wall

B. cytoplasm

C. ribosomes

D. endoplamic reticulum

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4

The pigment similar to chlorophyll found in green sulphur bacteria is

A. bacterioviridim

B. bacteriochlorophy11

C. chlorophyll

D. both (a) and (c)

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Bacteria reproduce

A. asexually only

B. sexually only

C. mostly asexually

D. mostly sexually

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Bacterial activity is minimum at

A. high temperature

B. moderately high temperature

C. moderate temperate

D. low temperature

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Which one of the following fixes CO2 into carbohydrates ?

A. Rhizobiunt

B. Azotobacter

C. Clostridium

D. Rhodospirilium

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4

Peptidoglycan is present in

A. gram-positive bacteria

B. gram-negative bacteria

C. all bacteria

D. only some bacteria

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Which of the following statement is correct ?

A. All bacteria are autotrophic

B. All bacteria are heterotrophic

C. All bacteria are photosynthetic

D. Most of the bacteria are heterotrophic but some are autotrophic

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An example of chemoautotrophic bacterium is

A. mitochondria

B. mesosomes

C. ribosomes

D. cell membrane

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Bacteria are usually classified as plants because they

A. produce spores

B. have cell walls

C. cannot move

D. produce enzymes

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Bacteria having a tuft of flagelia at one end are called

A. monotrichous

B. peritrichous

C. amphitrichous

D. lophotrichous

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The Streptococcus lactis is responsible for

A. tanning of leather

B. flavouring of tea leaves

C. curdling of milk

D. none of these

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Chlorophyll 'a' occurs in

A. all plants except fungi

B. all green plants except prokaryotes

C. all green plants except bacteria

D. all green plants except cyanobacteria

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Germ theory of disease was proposed by

A. Robert Koch

B. L. Pasteur

C. T. Boveri

D. F.Jacob

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The nuclear material in a bacteria is made up of

A. DNA

B. RNA

C. Chromosome

D. None of these

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4

Tetanus is caused by

A. Bacillus coli

B. Streptococcus spp.

C. Pasteurella pestis

D. Clostridium tetani

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Bactcrial cell-wall is composed of

A. chitin

B. mucopeptidc

C. lignin

D. suberin

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Denitrifying bacteria convert

A. ammonia to nitrite

B. nitrite to nitrate

C. nitrate to free nitrogen

D. nitrogen to ammonia

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The smallest bacteria are

A. vibrio

B. cocci

C. spirilla

D. bacilli

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Putrefying bacteria act upon

A. fats

B. proteins

C. starch

D. oils

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There is no alternation of generation in �. coli due to absence of

A. nucleus

B. chromosomes

C. reduction division

D. syngamy

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Escherichia coli is a bacterium which is a common inhabitant of

A. fertile soil

B. water

C. human intestine

D. all of these

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Which of the following statements about bacteria is not true ?

A. Some bacteria are parasitic

B. Food poisoning is caused by products of putrefying bacteria

C. Bacteria reproduce by cell division, as often as once every twenty minutes

D. Bacteria manufacture food by help of chloroplasts

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A free living bacterium capable of fixing atmospheric nitrogen is

A. Staphylococcus

B. Streptococcus

C. Azotobacter

D. None of these

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Which of the following occurs in photo-synthetic bacteria only ?

A. Mesosomes

B. Nucleoid

C. Chromatophores

D. Pili