Which of the following apparatus is used to count the cell?
A. Microscope
B. GM counter
C. Hemocytometer
D. Centrifuge
_________ molecule can cross the membrane easily.
A. Negatively charged
B. Positively charged
C. Neutral
D. All of the Above
Cell membrane is negatively charged due to ___________.
A. Phosphate group
B. Ethanolamine base
C. Both A and B
D. None of these
The “Lipid bilayer Model” was put forward by ______.
A. Singer
B. Davon and Nicholson
C. Robertson
D. Gorter and Grendel
Answer
Correct Answer: D. Gorter and Grendel
Detail About MCQs
The “Lipid bilayer Model” was put forward by Gorter and Grendel. They proposed this model in 1925 based on their experiments involving the extraction of lipids from red blood cells. Their work contributed to the understanding of the structure and organization of cell membranes, suggesting that cell membranes consist of a double layer of lipids with protein molecules embedded within them. This model laid the foundation for further research and understanding of the structure and function of biological membranes.
Lysosomes are abundantly present in ___________.
A. Lungs
B. Kidney
C. Leucocyte
D. Backbone
The Stiffness of the Secondary wall is due to ___________.
A. Waxes
B. Silica
C. Lignin
D. None of these
What is the resolution power of light microscope?
A. 100nm
B. 150nm
C. 200nm
D. 250nm
________ cell organelle is called MTOCs.
A. Basal Bodies
B. Centriole
C. Both A and B
D. None of these
The resolution power of human naked eye is ___________.
A. 1.0 mm
B. 2.0mm
C. 3.0 mm
D. 4.0 mm
The smallest cell organelle is ___________.
A. Ribosome
B. Glyoxisome
C. Lysosome
D. Peroxisome