EASY
Earn 100

Who invented cell?

Important Questions on Cell : The Unit of Life

EASY
Fill up the blanks with suitable words.
Schleiden __i__ observed that all plants are composed of different kind of cells. Schwann __ii__ studied animal cells and reported that plants have __iii__ and all cells had __iv__ , and Virchow explained that cells divided and formed new cells from __v__. This constitutes __vi__.
A) Cell theory
B) Zoologist
C) Existing cells
D) Cell wall
E) Plasma membranes
F) Botanist
MEDIUM

Choose the correct statements
i. Ribosomes are found in Cytoplasm, Chloroplasts, Mitochondria and on rough ER
ii. Mesosomes in bacteria are not the sites of DNA replication
iii. Algae cell wall made of cellulose, galactans, mannan and calcium carbonate
iv. Mitochondria, chloroplast and peroxisomes are the part of Endomembrane System

The correct answer is

EASY
The size of Pleuropneumonia-like Organism (PPLO) is:
MEDIUM
Select the incorrect statements from the following
I) In plasma membrane, hydrophilic polar heads of lipids arrange towards the outside and the hydrophobic tail towards the inner side
II) In the plasma membrane, peripheral proteins lie on the surface of the membrane while the integrated proteins are not buried in the membrane
III) Neutral solutes may move across the membrane by the process of simple diffusion against the concentration gradient
IV) Polar molecules can pass through the non-polar lipid bilayer and do not require a carrier protein
EASY
The concept of “Omnis cellula-e cellula” regarding cell division was first proposed by:
EASY
According to the modern colloidal theory, the protoplasm is a polyphasic colloidal system. This was first suggested by
EASY
Which of the following forms the maximum part of a cell?
EASY
Which of the following plant species shows exception for the cell theory ?
EASY
Who observed few living cells capable of moving, such as bacteria, protozoa, spermatozoa and red blood corpuscles under his own designed microscope?
EASY
Match the following Columns.
 
Column – I (Cell organelle) Column – II (Discovered by)
A - Ribosome 1 - Fontana
B - Nucleolus 2 - Tolbert and Yamazaki
C - Glyoxysome 3 - Palade
D - Peroxisome 4 - Beevers
EASY
How many microfibrils combine to form a fibril of cellulose?
EASY
Who said, 'all cells arise from pre-existing cells'?
EASY
In the middle lamella of plant cell walls, one of the main elements is:
EASY
Keeping has viewed the structure of the cell membrane, which one of the following statements is correct with respect to the movements of liquid and proteins from one liquid monolayer to the other (flip flop movement).
MEDIUM
The correct order of sedimentation of subcellular structures during differential centrifugation is: