Other questions in this quiz

2. What is the name of the enzyme produced by some organisms which neutralises superoxide free radicals (O2-)

  • superoxide dismutase
  • Radicalase
  • oxide mutase
  • Superoxase
  • superoxide mutase

3. What helps DNA stay coiled in microbes that can tolerate high temperatures?

  • DNA-gyrase
  • Reverse-nuclease
  • ATPase
  • reverse DNA-gyrase
  • Nuclease

4. Which of the following sexually transmitted infections can cause ulceration?

  • Syphilis
  • Chlamydia
  • Gonorrhoea
  • Trichomoniasis
  • Bacterial vaginosis

5. Which of the following does NOT apply to the lysogenic cycle in viruses?

  • Can be activated by stress multiplying
  • Viral DNA is incorporated into the host's genome
  • The viral DNA replicates when the host cell divides
  • The host cell is killed by the virus
  • No virus particles are produced

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