What are the primary mechanisms by which E. coli regulates the amount and activity of its heat-shock sigma H? a. gene inversion
b. proteolysis by chaperones
c. anti-sigma factors
d. RNA degradation
e. translational control
f. transcriptional controls

Arafura file snakes are large, aquatic, non-venomous snakes found in the flood-plains of australian rivers. they feed only on fish found in the rivers. it has been observed that heavy rainfall in the wet season in one year leads to prolonged inundation of the floodplains lasting a year or longer. it has also been observed that these snakes remain in good physical condition after a flood. explain how the file snake population in a region is likely to be affected by the prolonged inundation of a flood-plain.

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?