SER and RER can be distinguished with its presence in

  • protein synthesising cells

  • protein and fat synthesising cells

  • carbohydrates and fat synthesising cells

  • lipid and protein synthesising cells

Fluid mosaic model of plasma membrane was given by

  • Robertson

  • Robert Hooke

  • Singer and Nicholson

  • Gorter and Grendel

The percentage of cell surface that is impenetrable for ions is

  • 1 %

  • 99.9 %

  • 90 %

  • 73 %

The property of semipermeability belongs to

  • cell wall

  • plasma membrane

  • mitochondria only

  • None of the above

Microtubules are absent in

  • mitochondria

  • flagella

  • spindle fibres

  • centriole

Which of the following four cell structures is correctly matched with the accompanying description?

  • Plasma membrane - Outer layer of cellulose or chitin, or absent

  • Mitochondria - Bacteria like elements with inner membrane forming sacs containing chlorophyll, found in plant cells and algae

  • Chloroplasts - Bacteria like elements with inner membrane highly folded

  • Golgi apparatus - Stacks of flattened vesicles

Which one of the following is incorrect statement

  • All organisms are composed of cells

  • Cell is the basic unit of life

  • All inanimate things are made up of cells

  • Virus is acellular

Which of the following is true

  • cell is the basic unit of life

  • cell is present in all living organisms

  • cell is the basic unit of body of organism

  • All of these

Which of the following is true about unicellular organism ?

  • anything less than a complete structure of a cell does not ensure independent living

  • it is capable of independent existence

  • cell is structural and functional unit

  • All of the above

With the discovery of which of the following, the study of the structural details was made possible

  • compound microscope

  • electron microscope

  • cryo-electron microscope

  • Fluorescent microscope

Which of the following is true about Robert Hooke?

  • He saw first cell

  • He saw first dead cell

  • He saw first cell wall

  • All of the above

Which one is true about Schleiden

  • He proposed that body of a plant is made up of cells and their products

  • He was a botanist

  • He couldn’t explain the formation of the new cells

  • All of the above

Cell theory’s earlier proposed by Schleiden and Schwann  failed to explain

  • how new cells are formed

  • how cells die

  • how cell division takes place

  • how plant cell is different from animal cell

The statement (omniscellula-e cellula) was given by

  • The man who proposed modern cell theory

  • The man who gave final shape to the cell theory

  • The man who modified cell theory explaining that new cells are formed from pre-existing cells

  • All of the above

Which of the following is true about Rudolf Virchow?

  • He modified the hypothesis of the Schleiden and Schwann

  • He explained how new cells are formed

  • He explained what Schleiden and Schwann couldn’t explain in cell theory

  • All of the above

Which one is true statement

  • cell membrane is the delimiting structure of the cell

  • cytoplasm is the main arena of cellular activities

  • All cells have nucleus

  • Both A and B

How many of the following cell organelles are membranous?

Endoplasmic reticulum, Nucleus, lysosomes, vacuoles, ribosomes, centrioles

(1)6

(2)5

(3)4

(4)2
  • 1
  • 2
  • 3
  • 4

How many of the following cell organelles are not present in prokaryotic cell?

Endoplasmic reticulum, Nucleus, lysosomes, vacuoles, ribosomes, centrioles

 

(1)6

(2)5

(3)4

(4)2
  • 1
  • 2
  • 3
  • 4

In which of the following cell organelles ribosomes are present?

  • cytoplasm

  • Mitochondria and chloroplast

  • Nucleus, Mitochondria and chloroplast

  • cytoplasm, Mitochondria and chloroplast

Which of the following is a membraneless organelle

  • Ribosome

  • Nucleolus

  • Basal Body

  • All of these

Which one is incorrect

  • Mycoplasmas are greater than bacteria

  • largest isolated cell is ostrich egg

  • Nerve cells are longest cells

  • The shape of the cell may vary with  the function they perform

Nerve cell is

  • largest and branched

  • longest and branched

  • longest and unbranched

  • largest and unbranched

Which of the following represents the prokaryotic cell

  • bacteria, blue-green algae, mycoplasma, PPLO

  • bacteria, blue-green algae, microbes, chlorella

  • bacteria, blue-green algae, slime moulds and Diatoms

  • bacteria, blue-green algae only

Which of the following is incorrect match

  • bacillus- rod like

  • coccus-comma shaped

  • vibrio-comma shaped

  • spirillum-spiral

Which of the following is true about prokaryotic cell

  • no well-defined nucleus

  • naked genetic material

  • nuclear membrane is absent

  • All of the above

Which of the following is not true about plasmid

  • extra chromosomal DNA

  • give unique genotypic characters to bacteria

  • helps in antibiotic resistance

  • helps in reproduction

The common organelle present in both eukaryotes and prokaryotes is

  • Vacuole

  • cell membrane

  • ribosome

  • centrosome

Which of the following is the characteristic of  prokaryotes

  • mesosome

  • naked DNA

  • plasmid

  • All of the above

Arrange the following in the increasing of their size

  • virus< PPLO< typical bacteria< typical eukaryotic cell

  • PPLO< virus< typical bacteria< typical eukaryotic cell

  • virus< PPLO< typical eukaryotic cell< typical bacteria

  • virus> PPLO> typical bacteria> typical eukaryotic cell

The detailed structure of the cell membrane was studied only after the advent of the

  • compound microscope

  • cryo-electron microscopy

  • X-ray crystallography

  • electron microscope

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