Biology : Cell : The Unit of Life

Which one of the following does not differ in E.coli and Chlamydomonas?

• Ribosomes

• Chromosomal organisation

• Cell wall

• Cell wall

Which of the following are not membrane bound?

• Vacuoles

• Ribosomes

• Lysosomes

• Lysosomes

Which of the .following structures is not found in a prokaryotic cell?

• Nuclear envelope

• Ribosome

• Mesosome

• Mesosome

Cellular organelles with membranes are

• nuclei, ribosomes and mitochondria

• chromosomes, ribosomes and endoplasmic

• endoplasmic reticulum, ribosomes and nuclei

• endoplasmic reticulum, ribosomes and nuclei

• Codes 
        A   B    C    D
        4   3     1     2
  
    
• Codes 
        A     B    C    D
       3      4     1      2
• Codes
                A   B   C    D
                3   1    4    2
• Codes
                A   B   C    D
                3   1    4    2

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

• Rhizoids

• Fimbriae

• mesosomes

• mesosomes

Cell wall is absent in

• Aspergillus

• Funaria

• Mycoplasma

• Mycoplasma

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

• microtubules

• microfilaments

• intermediate filaments

• intermediate filaments

The motile bacteria are able to move by 

• fimbriae

• flagella

• cilia

• cilia

Which structures perform the function of mitochondria in bacteria?

• Nucleoid

• Ribosomes

• Cell wall

• Cell wall