Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________?

Related Mcqs:

1. Rapid growth at exponential ration occurs in which phase of bacterial growth:

   A. Lag phase
   B. Log phase
   C. Stationary phase
   D. Death / decline phase

2. Functional unit of DNA Is____________?

   A. Nucleus
   B. Genes
   C. Chromosomes
   D. Nucleolus

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. In the lytic cycle of bacteriophage the host DNA is__________?

   A. Replicated
   B. Turn off by the protein coat.
   C. Digested into its nucleotides
   D. Turned on by the removal of the protein coat

5. Extremely long molecule of DNA that is tightly folded to fit inside the cell component is called_____________?

   A. Nucleus
   B. Chromosome
   C. Chromatid
   D. Chromatin body

6. Which one of these structures involved in replication of bacterial dna?

   A. chromosomes
   B. pilli
   C. plasmid
   D. mesosome

   Submitted by: hassan

7. Which organelles contain its own DNA?

   A. nucleus
   B. mitochondria
   C. chloroplast
   D. All of these

   Submitted by: Kiran Zafar

8. The structure of DNA was proposed by_________?

   A. Louis Pasture
   B. William Harvey
   C. Charles Darwin
   D. Watson and Crick

   Submitted by: Ahmed Khan

9. Which of the following cell organelles does not contain DNA?

   A. Nucleus
   B. Lysosomes
   C. Chloroplast
   D. None of these

   Submitted by: Nayab Idrees

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

    A. Ligase
    B. Endonuclease
    C. Exonuclease
    D. Gyrase

    Submitted by: Maria Aziz