Cell Biology and Micro-biology

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1. The transfer of electrons between the cytochrome bc-1 and cytochrome oxidase complexes of the eukaryotic electron transport chain is mediated by which of the following molecules?

  • Ubiquinone
  • Protons
  • Cytochrome c
  • Adenosine triphosphate
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2. In an eukaryotic cell which of the following possesses a double membrane?

  • Mitochondrion
  • Golgi apparatus
  • Endoplasmic Reticulum
  • Nucleus

3. The series of circulatory proteins referred to as complement are associated with the...

  • None of the above
  • Adaptive immune system
  • Innate immune system
  • Both innate and adaptive immune systems

4. Comparison of molecular sequences would suggest that chloroplasts are the most closely related to the following group of bacteria

  • Bacteriodetes
  • Cyanobacteria
  • Gammaproteobacteria
  • Alphaproteobacteria

5. in a eukaryotic cell mRNA synthesis takes place in the

  • Nucleus
  • golgi apparatus
  • Cytoplasm
  • Endoplamic reticulum


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