Which one of the following cocci appears like grapes under microscope?
Streptococci
Diplococci
Staphylococci
Pneumococci
C.
Staphylococci
Staphylococci are species of Gram-positive bacteria. It can cause a wide variety of infections in humans and other animals through infection or the production of toxins. When viewed under microscope, they appear in grape-like clusters.
Streptococcus is a genus of Gram- positive coccus or spherical bacteria.
Diplococci is a bacterium that occurs as pairs of cocci. It is a round bacterium that occurs in the form of two joined cells.
Pneumococci is a type of streptococcus bacteria.
Which one of the following combination of all three fatty acids are essential for human beings?
Oleic acid, linoleic acid and linolenic acid
Palmitic acid, linoleic acid and arachidonic acid
Oleic acid, linoleic acid and arachidonic acid
Linoleic acid, linolenic acid and arachidonic acid
The epithelium found in the inner linings of stomach and intestine is
columnar
squamous
stratified
pseudostratified
Which one of the following is wrong for meiosis?
It leads to formation of sister chromatids
It occurs in diploid cell
It occurs in haploid cell
It occurs by splitting of centromeres and separation of sister chromatids
