Gram +ve bacteria on treatment with crystal violet dye give _________colour?

Related Mcqs:

1. Gram positive bacteria appear_______________?

   A. Purple B. Red C. Pink D. Blue...

2. The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following?

   A. Lipids B. Carbohydrates C. Amino acids D. Protein and amino acids Submitted by: Rashid Mehmood...

3. Which adaptation is acquired by plants of cooler areas to prevent lipid crystal formation in cell membrane?

   A. Change in membrane protein composition. B. Change in the solute composition of the cell membrane which prevents crystallization. C. Increase in proportion of unsaturated fatty acids. D. Development of heat shock proteins....

4. The monosaccharide found in some bacteria and occurring rarely are______________?

   A. Trioses B. Hexoses C. Tetroses D. Pentoses...

5. Viruses are __________ smaller than bacteria?

   A. 10 – 100 times B. 10 – 1000 times C. 100 – 1000 times D. 1000 – 10000 times...

6. The liquid that escapes during defrosting frozen meat contains _____ bacteria?

   A. Campylobacter B. Nitrobacter C. Azobacter D. Salmonella...

7. The word Archaeobacteria (a division of bacteria) derived from Greek means___________?

   A. True bacteria B. False bacteria C. Recent bacteria D. Ancient bacteria...

8. Those bacteria which are fully dependent upon their host for nutrition are called__________?

   A. Heterotrophic bacteria B. Chemosynthetic bacteria C. Saprophytic bacteria D. Parasitic bacteria...

9. Purple non-sulphur bacteria is an example of___________?

   A. Heterotrophic bacteria B. Chemosynthetic bacteria C. Photosynthetic bacteria D. Saprotrophic bacteria...

10. Bacteria protect themselves from viruses by fragmenting viral DNA with ____________?

    A. Ligase B. Endonuclease C. Exonuclease D. Gyrase Submitted by: Maria Aziz...