Tarsiers, new world monkeys, old world monkeys, and apes are all living members of which of the
following mammalian lineages?
a. Strepsirhini
b. monotremes
c. Rodentia
d. Haplorhini
e. marsupials
D
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Jacob and Monod were intellectually primed to draw the conclusions they did concerning regulation of the lac operon. In part, this was due to their fascination with mechanisms of enzyme regulation. They knew that the activity of some enzymes is regulated
when their reaction product binds to the enzyme, changing its shape and, therefore, its activity. This knowledge allowed them to easily make the intellectual leap to propose _____. A) the existence of the CAP binding site B) allosteric regulation of the repressor C) positive regulation of the lac operon D) the existence of the operator E) co-transcribed and co-regulated genes of bacterial operons
Which of the following statements about nuclear localization of proteins is not true?
A. Importin ? and importin ? form a cytosolic complex that interacts with proteins containinga nuclear localization signal. B. Ran-GTP binding is required for the recycling of both importin ? and importin ? back to the cytosol. C. Ran-GDP is transported from the nucleus to the cytosol.
The biological species concept, formalized by Ernst Mayr in 1942, defined a species as a ________
A) group of individuals that inhabit the same location B) group of individuals with similar morphological characteristics C) population within and among which individuals actually or potentially interbreed and outside of which they do not interbreed D) group of individuals who share similar allelic frequencies E) population of individuals within and among which reproduction takes place frequently
An increase in root pressure will result in the rapid release of abscisic acid (ABA) and the subsequent opening of the stomata.
Answer the following statement true (T) or false (F)