Cell: The Unit of Life · Question 65

The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are

1. Stroma lamellae
2. Cristae
3. Stroma
4. Grana

Select the correct matching in the following pairs :

1. Rough ER – Oxidation of fatty acids
2. Smooth ER – Oxidation of phospholipids
3. Rough ER – Synthesis of glycogen
4. Smooth ER – Synthesis of lipids

The chromosomes in which centromere is situated close to one end are :

1. Telocentric
2. Metacentric
3. Sub-metacentric
4. Acrocentric

Which one of the following is not an inclusion body found in prokaryotes?

1. Cyanophycean granule
2. Phosphate granule
3. Polysome
4. Glycogen granule

Which structures perform the function of mitochondria in bacteria?

1. Nucleoid
2. Ribosomes
3. Cell wall
4. Mesosomes

The motile bacteria are able to move by

1. fimbriae
2. flagella
3. cilia
4. pili.

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:

1. Microfilaments
2. Lamins
3. Microtubules
4. Intermediate filaments

The osmotic expansion of a cell kept in water is chiefly regulated by:

1. Vacuoles
2. Plastids
3. Mitochondria
4. Ribosomes

Match the following and select the correct answer :

1. (a) (iv), (b) (iii), (c) (i), (d) (ii)
2. (a) (i), (b) (iii), (c) (ii), (d) (iv)
3. (a) (iv), (b) (ii), (c) (i), (d) (iii)
4. (a) (i), (b) (ii), (c) (iv), (d) (iii)

Pigment containing membranous extensions in some cyanobacteria are

1. pneumatophores
2. chromatophores
3. heterocysts
4. basal bodies.