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 structure is not found in a prokaryotic cell?

1. Nuclear envelope

2. Ribosome

3. Mesosome

4. Plasma membrane

Match the columns and identify the correct option. 

1. A → (iv), B → (iii), C → (i), D → (ii)

2. A → (iii), B → (iv), C → (i), D → (ii)

3. A → (iii), B → (i), C → (iv), D → (ii)

4. A → (iii), B → (iv), C → (ii), D → (i)

Balbiani rings are sites of?

1. Lipid synthesis

2. Nucleotide synthesis

3. Polysaccharide synthesis

4. RNA and protein synthesis

Which of the following is not membrane-bound?

1. Vacuoles

2. Ribosomes

3. Lysosome

4. Mesosomes

The structures that help some bacteria to attach to rocks and/or host tissues are?

1. Rhizoids

2. Fimbriae

3. Mesosomes

4. Holdfast

Cellular organelles with membranes are:

1. Nucleus, ribosome and mitochondria

2. Chromosomes, ribosomes and endoplasmic reticulum

3. Endoplasmic reticulum, ribosome and nuclei

4. Lysosomes, Golgi apparatus and mitochondria