Biology : Cell : The Unit of Life

The phrase "Omnis cellula e cellula' was given by

• Virchow

• Pasteur

• Schleiden

• Brown

Membrane is absent in

• Nucleus

• Nucleolus

• Vacuole

• Lysosome

In prokaryotes, chromatophores are

• Specialised granules responsible for the colouration of cells

• Structures responsible for organising the shape of the organism

• Inclusion bodies lying free inside the cells for carrying out various metabolic activities

• Internal membrane systems that may become extensive and complex in photosynthetic bacteria

Endoplasmic reticulum is in continuation with

• Golgi body

• nuclear wall

• mitochondria

• cell wall

The vacuole is lined by a membrane called

• tonoplast

• jacket

• cell membrane

• tonoplasm

Cell theory was proposed by 

• Virchow

• Schleiden and Schwann

• Robert Hooke

• B McClintock

Who for the first time developed electron microscope?

• Knoll and Ruska

• Rudolf and Kolliker

• Robert Hooke

• Swanson

During DNA replication in prokaryotes DNA is anchored to

• chromosome

• mesosome

• nucleolus

• ribosome

The mineral present in cell wall is

• Na

• Ca

• K

• Mg

Which organelle is present in higher number in secretory cells?

• Dictyosome

• ER

• Lysosome

• Vacuole