The eradication of smallpox has been certified by WHO in the year
1979
1976
1989
1986.
Red blood cells are produced in
liver
brain
bone marrow
plasma
Red blood cells are red due to the presence of
haemocyanin
haemoglobin
serotonin
epinephrine
The shape of red blood cells is
disc
amoeboid
cuboid
spherical
The function of red blood cells is
to defend the body against harmful infections
to transport oxygen and carbon dioxide
to clot the blood in time of injuries
to produce white blood cells
Bacteria was first observed by
Theodore schwann
Leeuwenhoek
Virchow
M.J Schleiden
Red blood cells are ___ white blood cells in size.
equal to
smaller than
larger than
None of these
