An effective way to increase the rate of the reaction A+B ? C would be to
A. add more C.
B. remove the catalyst.
C. add more A or B.
D. decrease the temperature.
Answer: C
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Characteristics between the branch points of a cladogram that are shared by all organisms above the branch point and are not present in any below it are called
A. homologous characters. B. homoplastic characters. C. ancestral characters. D. derived characters. E. novel characters.
What is the epidemiological significance of shingles?
A. It shows that, as a latent viral infection, there is always a possible reservoir available to reinfect new susceptible individuals. B. It shows that we must always be vigilant against this deadly and highly infectious secondary infection in elderly and immunocompromised individuals. C. It shows that, as a chronic viral infection, individuals infected are always infectious to others around them, even when they do not show outward symptoms. D. It shows that our fight for long-term eradication of varicella zoster virus will be a very long fight, depending on immunizing all newly born individuals until all the people who had ever had contracted the illness have died E. It shows that, as a latent viral infection, there is always a possible reservoir available to reinfect new susceptible individuals AND it shows that our fight for long-term eradication of varicella zoster virus will be a very long fight, depending on immunizing all newly born individuals until all the people who had ever contracted the illness have died.
A healthy, young couple are carriers of cystic fibrosis; the chance that each of their future children will inherit this serious illness is
A. 50%. B. 0%. C. 75%. D. 25%. E. 100%.
You isolate a bacteria strain with modified peptidoglycan tetra peptide. The terminal D-alanine is replace by D-lysine, this does prevent cross-linking from occurring.We expect that organism to be resistant to?
a. penicillin b. rifampicin c. vancomycin d. none of the above