Q. No.Pigment-containing membranous extensions in some cyanobacteria are
(1) heterocysts
(2) basal bodies
(3) pneumatophores
(4) chromatophores
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. Bacillus2. Pseudomonas
3. Mycoplasma
4. Nostoc
Select the mismatch.
| 1. | Gas vacuoles — Green bacteria Cells |
| 2. | Large central vacuoles — Animal cells |
| 3. | Protists — Eukaryotes |
| 4. | Methanogens — Prokaryotes |
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 |
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 |
Which of the following are not membrane-bound?
1. Vacuoles
2. Ribosomes
3. Lysosomes
4. Mesosomes
Cellular organelles with membranes are
| 1. | nuclei, ribosomes and mitochondria |
| 2. | chromosomes, ribosomes and endoplasmic reticulum |
| 3. | endoplasmic reticulum, ribosomes and nuclie |
| 4. | lysosomes, Golgi apparatus and mitochondria. |
The chromosomes in which centromere is situated close to one end are
1. metacentric
2. acrocentric
3. telocentric
4. sub-metacentric
Select the correct matching in the following pairs.
| 1. | Smooth ER—Oxidation of phospholipids |
| 2. | Smooth ER—Synthesis of lipids |
| 3. | Rough ER—Synthesis of glycogen |
| 4. | Rough ER—Oxidation of fatty acids |
Which one of the following is not an inclusion body found in prokaryotes?
1. Phosphate granule
2. Cyanophycean granule
3. Glycogen granule
4. Polysome
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