Cell arises from pre-existing cell was stated by
  • Haeckel
  • Virchow
  • Hooke
  • Schleiden
Cell theory was given by
  • Schleiden and Schwann
  • Virchow
  • Hooke
  • Haeckel
The only cell organelle seen in prokaryotic cell is
  • mitochondria
  • ribosomes
  • plastids
  • lysosomes
Organelle without a cell membrane is
  • ribosome
  • golgi apparatus
  • chioroplast
  • nucleus
1 μm is
  • 10 m
  • 9 m
  • 11 m
  • 12 m
Lysosome arises from
  • endoplasmic reticulum
  • golgi apparatus
  • nucleus
  • mitochondria
Living cells were discovered by
  • Robert Hooke
  • Purkinje
  • Leeuwenhoek
  • Robert Brown
Select the odd one out.
  • The movement of water across a semi permeable membrane is affected by the amount of substances dissolved in it.
  • Membranes are made of organic molecules like proteins and lipids.
  • Molecules soluble in organic solvents can easily pass through the membrane.
  • Plasma membranes contain chitin sugar in plants.
The undefined nuclear region of prokaryotes are also known as
  • nucleolus
  • nucleus
  • nucleoid
  • nucleic acid
Which of the following can be made into crystal?
  • A Virus
  • A Sperm
  • A Bacterium
  • An Amoeba
Lipid molecules in the cell are sythesized by
  • golgi apparatus
  • plastids
  • rough endoplasmic reticulum
  • smooth endoplasmic reticulum
Lysosome arises from
  • nucleus
  • golgi apparatus
  • mitochondria
  • endoplasmic reticulum
The proteins and lipids, essential for building the cell membrane, are manufactured by
  • rough endoplasmic reticulum
  • plasma membrane
  • mitochondria
  • golgi apparatus
The only cell organelle seen in prokaryotic cell is
  • ribosomes
  • plastids
  • lysosomes
  • mitochondria
Cell theory was given by
  • Schleiden and Schwann
  • Haeckel
  • Virchow
  • Hooke
Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell?
  • Vacuoles
  • Lysosomes
  • Golgi apparatus
  • Smooth endoplasmic reticulum
Organelle without a cell membrane is
  • ribosome
  • chloroplast
  • golgi apparatus
  • nucleus
The following are a few definitions of osmosis. Read carefully and select the correct definition
  • Movement of solvent molecules from its higher concentration to lower concentration
  • Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane
  • Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane
  • Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane
Select the odd one out
  • The movement of water across a semi permeable membrane is affected by the amount of substances dissolved in it.
  • Molecules soluble in organic solvents can easily pass through the membrane
  • Membranes are made of organic molecules like proteins and lipids
  • Plasma membranes contain chitin sugar in plants
Plasmolysis in a plant cell is defined as
  • shrinkage of nucleoplasm
  • break down (lysis ) of plasma membrane in hypotonic medium
  • none of them
  • shrinkage of cytoplasm in hypertonic medium
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