The organisms which can use reduced inorganic compounds as electron donors are known as .....
Which of the following ions are cofactors for various enzymes?
Magnesium ion and Iron ion
Which of the following are trace elements?
"Red extreme halophiles", are members of the archaebacterial which cannot grow with less than 12 to 15 percent NaCl.
Chromatium okenii uses which of the following compound as electron donor?
Which of the following is nutritional characterization of Escherichia coli?
Chemotrophic, Organotrophic, Heterotrophic
Some bacteria require organic sulphur compounds, some are capable of utilizing inorganic sulphur compounds and some can even use elemental sulphur. 4. Phosphorus is essential component of .....
teichoic acid, nucleotides, phospholipids
Which of the following amino acids require sulphur for their synthesis?
methionine and cystine
Which of the following are functions of water in the culture medium?
nutrients must be in aqueous solution
cofactor of enzymes
provides resistance to sudden transient temperature changes
it is a chemical reactant, nutrients must also be present in aqueous solution and provides resistance to sudden temperature changes.
Which of the following bacteria can grow both as chemolithotrophs or as chemoorganotrophs?
There are 10 questions to complete.