EASY
Earn 100

Who invented cell?
Important Questions on Cell : The Unit of Life
EASY
Schleiden ____ observed that all plants are composed of different kind of cells. Schwann ____ studied animal cells and reported that plants have ____ and all cells had ____ , and Virchow explained that cells divided and formed new cells from ____. This constitutes ____.
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

MEDIUM
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

EASY

EASY

EASY

EASY

EASY

EASY

EASY
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

EASY

EASY

EASY

EASY

EASY

MEDIUM

EASY

