Pigment-containing membranous extensions in some cyanobacteria are

(1) heterocysts

(2) basal bodies

(3) pneumatophores

(4) chromatophores

Subtopic:  Prokaryotic Cell Organisation |
 85%
From NCERT
NEET - 2013
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Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

1. Bacillus
2. Pseudomonas
3. Mycoplasma
4. Nostoc
Subtopic:  Prokaryotic Cell Organisation |
 93%
From NCERT
NEET - 2017
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Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

(1) Lysosome

(2) Ribosome

(3) Chloroplast

(4) Mitochondrion

Subtopic:  Mitochondria |
 87%
From NCERT
NEET - 2017
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Select the mismatch.

1. Gas vacuoles — Green bacteria Cells

2. Large central vacuoles — Animal cells

3. Protists — Eukaryotes

4. Methanogens — Prokaryotes

Subtopic:  Vacuole |
 84%
From NCERT
NEET - 2016
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Select the wrong statement.

(1) Bacterial cell wall is made up of peptidoglycan

(2) Pili and fimbriae are mainly involved in motility of bacterial cells

(3) Cyanobacteria lack flagellated cells

(4) Mycoplasma is a wall-less microorganism

Subtopic:  Details of Prokaryotic Cell Structure |
 77%
From NCERT
NEET - 2016
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A cell organelle containing hydrolytic enzyme is

(1) lysosome                         

(2) microsome

(3) ribosome                         

(4) mesosome

Subtopic:  Endomembrane System (Lysosomes) |
 92%
From NCERT
NEET - 2016
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Microtubules are the constituents of

(1) spindle fibres, centrioles and cilia

(2) centrioles, spindle fibres and chromatin

(3) centrosome, nucleosome and centrioles

(4) cilia, flagella and peroxisomes

Subtopic:  Cytoskeleton |
 63%
From NCERT
NEET - 2016
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Mitochondria and chloroplast are

I.semi-autonomous organelles.

II. formed by division of pre-existing organelles and they contain DNA but lack protein synthesizing machinery.

Which one of the following options is correct?

(1) Il is true but I is false

(2) I is true but ll is false

(3) Both I and I are false

(4) Both I and II are correct

 

Subtopic:  Plastids | Mitochondria |
 61%
NEET - 2016
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A complex of ribosomes attached to a single strand of RNA is known as

(1) polymer

(2) polypeptide

(3) okazaki fragment

(4) polysome

Subtopic:  Ribosome and Inclusion Bodies |
 86%
From NCERT
NEET - 2016
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Which of the following is not a feature of the plasmids?

(a) Circular structure

(b) Transferable

(c) Single-stranded

(d) Independent replication

Subtopic:  Details of Prokaryotic Cell Structure |
 60%
NEET - 2016
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