One of the symptoms of global warming is a decrease in the persistence of sea ice in the Arctic, which affects polar bears by:
a. increasing their access to salmon
b. reducing the portion of the year that they can reach seals
c. improving the chances of survival of their young
d. increasing mercury contamination in their tissues and increasing their access to salmon
e. increasing risk of stranding far from shore and reducing the portion of the year that they can reach seals
e
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When RNA-dependent RNA polymerase is synthesizing mRNA it is functioning as a ________.
A. helicase B. replicase C. transcriptase D. ligase
Where do substrates bind to enzymes?
A) in the active site B) anywhere C) in the effector site D) in the substrate groove
Hemagglutination is ________.
A. the binding of iron in the process of a viral suspension B. the clumping together of red blood cells in the presence of a viral suspension C. the clumping together of infected cells in the presence of a viral suspension D. None of the choices are correct.
If you found no cytotoxic effects with your plant extract, does this prove the extract is not cytotoxic? Explain.
What will be an ideal response?