Tag: micro organisms

Quizzes (15) Questions (29)

Questions Related to micro organisms

Multiple choice biology micro organisms food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Moulds belong to 

  1. Ascomycota

  2. Zygomycota

  3. Deutromycota

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

(A)Ascomycota is a class commonly known as sac fungi with asexual spore ascus.

(B)Zygomycota is a class of fast-growing fungi with asexual spore conidia.
(C)Deutromycota is a class commonly called fungi Imperfecti where there is no sexual phase.
So, the correct answer is 'All of the above'.

Multiple choice biology micro organisms food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Hyphomycetes is a group of

  1. Mushroom

  2. Yeast

  3. Mould

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mould is a fungus that grows on the bread when kept outside for long, molds feed on the carbohydrate present on the bread. Fungi have the saprophytic mode of nutrition. Fungi is further classified into fungi imperfecti called Hyphomycetes.

So, the correct option is 'Fungi'.

Multiple choice biology micro organisms food production and microorganisms microbial products - food, medicines and industrial products uses of microorganisms

Which of the following grows in the form of multicellular filaments? 

  1. Bacteria

  2. Mould

  3. Amoeba

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

(A)Bacteria grows in the form of colonies.

(B)Mould grows in the form of filaments.
(C)Amoeba has a definite irregular shape growth.
So, the correct answer is 'Mould'

Multiple choice biology micro organisms non cellular organism : virus world of virus bacteria - introduction, shape and structure

Which of the following can be made into crystal form?

  1. Algae

  2. Amoeba

  3. Virus

  4. Sperm
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Viruses can be made into a crystalline form. TMV became the first virus to be crystallized in 1935. One crystal of viruses consists of thousands of viruses. The crystallization of viruses was first done by Stanley. Algae, Amoeba and Sperm cannot be crystallised.

The correct answer is C.

Multiple choice biology micro organisms non cellular organism : virus world of virus bacteria - introduction, shape and structure

The organisms which display properties of both living and nonliving are

  1. Viruses

  2. Diatoms

  3. Lichens

  4. Bacteria
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Virus is the microorganisms which have properties of living and non-living both. They have a specific structure which consists of head and tail. Head is composed of several protein units known as capsomeres which enclose the genetic material made up of RNA or DNA. They have a lipid envelope derived from the host cell membrane which lies outside the capsomere. They occur in crystalline form outside the body of the host but as it enters the host cell it injects its genetic material which replicates vigorously. The replicated materials are further packed in the new protein coat formed using host protein and is thrown out by the lysis of cell membrane.

Multiple choice biology micro organisms non cellular organism : virus world of virus bacteria - introduction, shape and structure

Scientific name of "Tobacco mosaic virus" is standardised through the rules of:

  1. ICBN

  2. ICZN

  3. ICVN

  4. ICNB
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are $5$ codes of nomenclatures:- 

1)ICBN- International code of Biological Nomenclature.
2)ICZN- International code of Zoological Nomenclature.
3)ICVN- International code of Viral Nomenclature.
4)ICBN- International code of Bacterial Nomenclature.
5)ICNCP-International code of Nomenclature for cultivated plants.
Tobacco mosaic virus follows ICVN as it is a virus 
Option - $C$

Multiple choice biology micro organisms non cellular organism : virus world of virus bacteria - introduction, shape and structure

Which one of the following statements about viruses is correct?

  1. Viruses possess their own metabolic system.

  2. All viruses contain both RNA and DNA.

  3. Viruses are obligate parasites.

  4. Nucleic acid of viruses is known as capsid.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A virus is a small infectious agent, that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea. All viruses are obligate parasites; i.e., they lack metabolic machinery of their own to generate energy or to synthesize proteins, so they depend on host cells to carry out these vital functions. Thus, option C is correct.
Viruses do not possess their own metabolic system. So, depends on host machinery. Thus, option A is wrong.
All viruses contains either DNA or RNA as genetic material but, not both. Thus, option B is wrong.
The protein coat of virus is called as capsid. Thus, option D is wrong.