One way to regulate gene expression is through the production of different sigma factors. These cause RNA polymerase to bind to different sets of promoters, thereby altering the pattern of gene expression.
Answer the following statement true (T) or false (F)
True
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The feeding relationships among the species in a community determine the community's _____
A) secondary succession B) ecological niche C) species richness D) species-area curve E) trophic structure
When an enzyme-catalyzed reaction reaches equilibrium
a. the enzymes are now inhibited. b. the chemical reactions cease. c. the rate of the forward and reverse reactions are equal. d. the concentration of reactants equals the concentration of products. e. ATP is no longer required to drive the reaction.
In the classic study by Harris et al. (1933), when thiamine-deficient rats were offered 10 new diets, only one of which contained the badly needed thiamine...
(a) all of them developed an immediate preference for the thiamine-rich diet (b) almost all of them learned to eat the thiamine-rich diet and avoid the deficient diets (c) they were equally likely to eat each of the 10 new diets (d) few developed a preference for the thiamine-rich diet
The removal and analysis of a piece of tissue that is suspected to be cancerous is called a(n) ________
Fill in the blank(s) with correct word