Bacterial Growth Multiple Choice Questions And Answers

21. For the synthesis of amino acids cysteine, cystine and methionine the element required is
a. Sulphur
b. Oxygen
c. Nitrogen
d. None of these
Ans: D

22. Sulphur can be utilized by bacteria in the form of
a. Organic compounds
b. Inorganic compounds
c. Elemental compounds
d. All of the above
Ans: A

23. Phosphorous is an essential component of
a. Nucleotides
b. Nucleic acids
c. Phospholipids and Heichoic acids
d. All the above
Ans: D

24. Trace elements are
a. Zn+2, Cu+2, Mn+2
b. MO6+, Ni2+, B3+ and CO2+
c. Both a and b
d. None of these
Ans: D

25. Most bacteria do not require the ion
a. Mg2+
b. Ca2+
c. Na+
d. Fe+2
Ans: C

26. Vitamin function as
a. Co-enzymes
b. Co-melecules
c. Building blocks of cell
d. None of these
Ans: C

27. The vitamin required for Lactobacillus species is
a. Riboflavin
b. Niacin
c. Pyridoxine
d. Folic acid
Ans: B

28. Vitamin K is necessary for the species
a. Lactobacillus spp.
b. Bacillus anthracis
c. Bacteroides melaninogenicus
d. All of these
Ans: A

29. The bacteria which are able to grow at 0°C but which grow at 20°C to 30°C, are known as
a. Psychrophiles
b. Facultative psychrophiles
c. Average psychrophiles
d. Mesophiles
Ans: C

30. Radical shifts can be prevented by adding
a. Acids
b. Alkali
c. Buffer
d. None of these
Ans: C

More Questions & Answers:-
Page1 Page2 Page3 Page4 Page5 Page6