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WorksheetsCell Biology - Test 2 - Discoveries
Total questions: 33
Worksheet time: 23mins
The first useful compound microscope was invented by _________
Anton Von Leeuvenhoek
Robert Hooke
Zacharias Janssen
Schleiden and Schwann
The term Cella is a __________
Greek Word
Latin Word
Anglican Word
Hebrew Word
Robert Hooke discovered cells in (a) year
The dictum "Omnis cellula e cellula" is proposed by _________
Robert Hook
Robert Koch
Karl Nageli
Rudolf Virchow
Who proposed that "animals were made of cells"
Theodor Schwann
Mathias Jacob Schleiden
Felix Dujardin
Rudolf Virchow
Who proposed that "plants were made of cells"
Theodor Schwann
Mathias Jacob Schleiden
Felix Dujardin
Rudolf Virchow
Who is the curator of Royal Society of London
(a)
First living beings were observed by ________
Robert Hook
Anton Von Leeuvenhoek
Nageli & Kramer
Strassburger
Who used the term "animalcules" for the protozoans, bacteria, rotifers, sperms and hydra that he observed under the mciroscope?
Robert Hook
Anton Von Leeuvenhoek
Nageli & Kramer
Strassburger
Marcello Malpighii examined animal tissues of organs like brains, liver, kidney, spleen, lungs, tongue and plant tissues and suggested that they ware composed of structural units called ______
Cells
Animalcules
Fleas
Utricles
"Omnis cellula e cellula" means ________
An organism's individual history repeats its phylogenic history
Cells arise from pre-existing cells
All living organisms are made of cells
All living matter, out of which plants and animals are formed, is the protoplasm
Which of the following is not a component of "Cell Theory"?
Cell is the structural and functional unit of life
All living matter, out of which plants and animals are formed, is the protoplasm
All living organisms are made of cells
Cells arise from pre-existing cells
Felix Dujardin termed jelly-like material within protozoans as (a)
Fluid Mosaic Theory of Singer and Nicolson
The fluid mosaic theory, proposed by Singer and Nicolson, describes the structure of cell membranes. According to this theory, the cell membrane is composed of a quasi-fluid lipid bilayer with embedded proteins. These proteins can move laterally within the membrane, giving it a mosaic-like appearance.
One key aspect of the fluid mosaic theory is the dynamic nature of the cell membrane. The movement of proteins within the membrane allows for various cellular processes to occur, such as signal transduction and transport of molecules. This dynamic nature is essential for the proper functioning of cells.
Overall, the fluid mosaic theory of Singer and Nicolson revolutionized our understanding of cell membranes. It provided a comprehensive explanation of the structure and function of these vital components of cells, shedding light on the intricate processes that take place within living organisms.
What property of proteins in the cell membrane allows for various cellular processes to occur?
They can move laterally
They can move vertically
They are stationary
They can only move in one direction
Why is the dynamic nature of the cell membrane essential for proper cell functioning?
To allow for the movement of molecules in and out of the cell
To maintain the structural integrity of the cell
To regulate cell communication and signaling
To provide protection against external threats
What does the fluid mosaic theory describe the structure of cell membranes as?
A solid lipid bilayer with embedded proteins
A gel-like lipid bilayer with embedded proteins
A fluid lipid bilayer with embedded carbohydrates
A quasi-fluid lipid bilayer with embedded proteins
Who coined the term cell membrane?
Nageli and Kramer
Felix Dujardin
Purkinje
Sutton and Boveri
Robert Brown, Fontana, De Duve, Porter discovered the following cell organelles, respectively (identify the correct sequence of cell organelles which matches the sequence of scientists given)
Nucleolus, Nucleus, Ribosomes, Lysosomes
Nucleus, Nucleolus, Lysosomes, ER
Nucleolus, Nucleus, ER, Lysosomes
Nucleus, Nucleolus, Lysosomes, Ribosomes
Purkinje coined the term
(a)
Benda is associated with which cell organelle?
Centriole
Peroxisome
Glyoxisome
Mitochondrion
Who coined the term "Ribosome"?
(a)
The scientist who described nucleolar organizer region?
Rosalind Franklin
Brabara McClintock
Robert Brown
Fontana
Organismal Theory is proposed by ________
Schleiden & Schwann
O. Hertwig
Sachs
None of the above
Protoplasmic Theory was proposed by ________
Schleiden & Schwann
O. Hertwig
Sachs
None of the above
Cell Theory was proposed by ________
Schleiden & Schwann
O. Hertwig
Sachs
None of the above
Walter Flemming is famous for the discovery of the process of _________
Phagocytosis
Pinocytosis
Mitosis
Meiosis
Meiosis was described by ______
Fleming
Farmer
Mayer & Metschnikoff
Beneden
Who coined the term Sarcode for Protoplasm?
purkinje
Felix Dujardin
Strassburger
Fleming
Who coined the term Protoplasm?
purkinje
Felix Dujardin
Strassburger
Fleming
The term karyokinesis is coined by _________
Beneden
Theodor Boveri
Meyer & Metschnikoff
Schleicher
The term phagocytosis is coined by _________
J. Q. Plowe
Theodor Boveri
Meyer & Metschnikoff
Schleicher
Who coined the term Mitochondrion?
(a)
The terms cytoplasm and nucleoplasm were coined by ______
Purkinje
Dujardin
Strassburger
Farmer
The term centriole is coined by ___________
Beneden
T. Boveri
C. Golgi
Flemming
Lysosomes were discovered and coined by _________
Von Beneden
Boveri
Christian De Duve
Baudhwin
