On the basis of collected facts and figures, a scientist formulates a factitive statement called:

Related Mcqs:

1. The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ?

   A. Molecular biologists
   B. Microbiologists
   C. Freshwater biologists
   D. Social biologist

2. Density gradient  centrifugation separates the materials on the basis of__________?

   A. Size alone
   B. Density alone
   C. Both a & b
   D. Velocity of movement

3. The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by________?

   A. Molecular biologists
   B. Microbiologists
   C. Freshwater biologists
   D. Social biologist

4. It is possible to date the rocks by comparing the amount of specific radioactive isotopes they contain. Which of the statement is correct in this respect:

   A. Older sediment layers have equal amount of these reaioactive isotopes as that of the young ones
   B. Older sediment layers have less amount of these reaioactive isotopes as that of the young ones.
   C. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
   D. Older sediment layers did not have these radioactive isotopes

5. Which statement is true about an aqueous medium________________?

   A. Ionic as well as non ionic substance in aqueous media retains their identity
   B. Enzymes can not perform catalysis reaction in this medium
   C. Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions
   D. It is less favorable media for chemical reactions

6. Which of the following statement is incorrect5 for fats containing unsaturated fatty acid_____________?

   A. They contain double bond
   B. They are usually solid at room temperature
   C. They are lighter than water
   D. Their specific gravity is less than 1

7. Which of the statement about viruses is incorrect___________________?

   A. We can not grow them in laboratories on artificial medias
   B. They are obligate intracellular parasite.
   C. They can synthesize their nucleic acid
   D. They are resistant to most of antibiotic treatment

8. Which of the following statement about Kingdom Protista is incorrect_______________?

   A. Their members have characteristics which separate them from other kingdoms
   B. They only include unicellular aquatic eukaryotic organisms
   C. They do not develop from Blastula or embryo
   D. They contain ancestors for fungi plants & animals

9. Which of the following statement about dicots is incorrect _________________?

   A. They have 4 or 5 sepals and petals or their multiple.
   B. They have parallel vein pattern on their leaves
   C. They are both herbaceous and woody
   D. Vascular bundles are ring shaped in their stems.

10. Which of the following statement about conifers is correct?

    A. Stored excretory products in vacuoles, at a concentration that leads to crystal formation.
    B. Accumulate waste in leaves, which fall in autumn.
    C. Production of black wood in the center.
    D. Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants.