The correlation coefficient for totally unrelated people is ____________________. Fill in the blank(s) with the appropriate word(s)

While a eukaryotic pre-mRNA is still being synthesized it is modified on its 5' end when

a. exon shuffling mixes mRNA pieces. b. enzymes recognize a polyadenylation signal in the trailing RNA sequence. c. the RNA introns are cut out by the spliceosome. d. an enzyme adds a guanine-containing cap. e. the RNA exons are spliced together.

Which of the following is NOT a characteristic of "prediabetes"?

a. high levels of HDL, the "good" cholesterol b. "apple shaped" body c. blood pressure of 130/85 mm Hg or higher d. fasting glucose of 110 mg/Dl or higher e. fasting triglyceride level of 150 mg/Dl or higher

Which reproductive isolation mechanism is defined by the prevention of genetic exchange between two species because

they reproduce at different times of the day or year? a. diurnal isolation b. sexual isolation c. annual isolation d. temporal isolation e. mechanical isolation

For each of the following sentences, select the best word or phrase from the list below to fill in the blanks. Not all words or phrases will be used; each word or phrase should be used only once

G-protein-coupled receptors (GPCRs) all have a similar structure with __________________ transmembrane domains. When a GPCR binds an extracellular signal, an intracellular G protein, composed of __________________ subunits, becomes activated. __________________ of the G-protein subunits are tethered to the plasma membrane by short lipid tails. When unstimulated, the ? subunit is bound to __________________, which is exchanged for __________________ on stimulation. The intrinsic __________________ activity of the ? subunit is important for inactivating the G protein. __________________ inhibits this activity of the ? subunit, thereby keeping the subunit in an active state. adenylyl cyclase cholera toxin GTPase AMP diacylglycerol phosphodiesterase ATP five seven ATPase four three Ca2+ GDP twelve cAMP GTP two Fill in the blank(s) with correct word