3221. Mode of transmission of hepatitis A is__________?
✅ B. Faeco-oral
Option A: Serum Option B: Faeco-oral Option C: Sexual contact Option D: All of these Correct Answer : Faeco-oral Read more
Author: Sheeraz Ahmed – Page 162
3222. Attachment of the bacteriophage with the receptor site on the bacterial cell wall involves_______________?
✅ B. Week chemical unior between them
Option A: Strong covalent bond between virion and the receptor sit Option B: Week chemical unior between them Option C: Both A and B depending upon the phage Option D: None of these Correct Answer : Week chemical unior between them Read more
3223. The one which is present in all aerobic species is _________?
✅ A. Cytohrome c
Option A: Cytohrome c Option B: Cytochrome a Option C: Cytochrome a3 Option D: Cytochrome b Correct Answer : Cytohrome c Read more
3224. All of the following are involved in nitrification except
✅ C. Rhizohium
Option A: Nitrobacter Option B: Nitrosomonas Option C: Rhizohium Option D: All of these Correct Answer : Rhizohium Read more
3225. DNA or RNA of viruses is enclosed in _______________ coat?
✅ A. Protein
Option A: Protein Option B: Carbohydrate Option C: Lipid Option D: DNA Correct Answer : Protein Read more
3226. In most ecosystems the greatest amount of energy flows through the____________?
✅ B. Herbivores
Option A: Secondary consumers Option B: Herbivores Option C: Carnivores Option D: Decomposers Correct Answer : Herbivores Read more
3227. Which of the following relationship is NOT an example of symbiosis?
✅ B. Marchantia sporophyte and gametophyte
Option A: Rhizobium and leguminous plants Option B: Marchantia sporophyte and gametophyte Option C: Algae and fungi in a lichen Option D: Mycorrhizal fungi and tree roots Correct Answer : Marchantia sporophyte and gametophyte Read more
3228. Other name for Kingdom monera is_______________?
✅ B. Prokaryotae
Option A: Protoctista Option B: Prokaryotae Option C: Archae Option D: None of these Correct Answer : Prokaryotae Read more
3229. Amoeba belongs to which kingdom______________?
✅ D. Protista
Option A: Prokaryotae Option B: Plantae Option C: Monera Option D: Protista Correct Answer : Protista Read more
3230. Competition between species will be greatest if they attempt to occupy the same___________?
✅ D. Niche
Option A: Ecosystem Option B: Community Option C: Habitat Option D: Niche Correct Answer : Niche Read more