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NEET/Medical PG Medical K-12-Medical
17 followers study24x7 30 Apr 2019 05:07 PM study24x7 study24x7

Viruses have

A

DNA enclosed in a protein coat

B

Prokaryotic nucleus

C

Single chromosome

D

Both DNA and RNA

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17 followers study24x7 30 Apr 2019 04:22 PM study24x7 study24x7

Pigment-containing membranous extensions in some cyanobacteria are:

A

Heterocysts

B

Basal bodies

C

Pneumatophores

D

Chromatophores

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17 followers study24x7 30 Apr 2019 04:13 PM study24x7 study24x7

Maximum nutritional diversity is found in the group

A

Monera

B

Plantae

C

Fungi

D

Animalia

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17 followers study24x7 30 Apr 2019 04:09 PM study24x7 study24x7

Which one of the following organisms is not an example of eukaryotic cells ?

A

Amoeba proteus

B

Paramecium caudatum

C

Escherichia coli

D

Euglena viridis

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17 followers study24x7 30 Apr 2019 04:04 PM study24x7 study24x7

Organisms called methanogens are most abundant in a:

A

Hot spring

B

Sulphur rock

C

Cattle yard

D

Polluted stream

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17 followers study24x7 29 Apr 2019 01:00 PM study24x7 study24x7

Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two Groups:

A

Eubacteria and archaea

B

Cyanobacteria and diatoms

C

Protists and mosses

D

Liverworts and yeasts

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17 followers study24x7 29 Apr 2019 12:52 PM study24x7 study24x7

Ringworm in humans is caused by:

A

Bacteria

B

Fungi

C

Nematodes

D

Viruses

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17 followers study24x7 29 Apr 2019 12:46 PM study24x7 study24x7

Virus envelope is known as

A

Capsid

B

Virion

C

Nucleoprotein

D

Core

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17 followers study24x7 29 Apr 2019 12:25 PM study24x7 study24x7

Which one is the wrong pairing for the disease and its causal organism?

A

Root-knot of vegetables: Meloidogynespecies

B

Late blight of potato: Alternaria solani

C

Black rust of wheat: Puccinia graminis

D

Loose smut of wheat: Ustilago nuda

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17 followers study24x7 29 Apr 2019 12:16 PM study24x7 study24x7

Bacterial leaf blight of rice is caused by a species of:

A

Alternaria

B

Erwinia

C

Xanthomonas

D

Pseudomonas

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17 followers study24x7 27 Apr 2019 06:02 PM study24x7 study24x7

Thermococcus, Methanococcus and Methanobacterium exemplify:

A

bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria

B

bacteria that contain a cytoskeleton and ribosomes

C

archaebacteria that contain protein homologous to eukaryotic core histones

D

archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.

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17 followers study24x7 27 Apr 2019 05:08 PM study24x7 study24x7

Which one of the following statements about mycoplasma is wrong?

A

They cause diseases in plants

B

They are also called PPLO

C

They are pleomorphic

D

They are sensitive to penicillin

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17 followers study24x7 27 Apr 2019 05:07 PM study24x7 study24x7

Ergot of rye is caused by a species of:

A

Claviceps

B

Phytophthora

C

Uncinula

D

Ustilago

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17 followers study24x7 27 Apr 2019 05:06 PM study24x7 study24x7

The causative agent of mad-cow disease is ?

A

Bacterium

B

Prion

C

Worm

D

Virus

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17 followers study24x7 27 Apr 2019 05:04 PM study24x7 study24x7

The thalloid body of a slime mould (Myxomycetes) is known as ?

A

Protonema

B

Plasmodium

C

Fruiting body

D

Mycelium

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