The Bt toxin derived from Bacillus thuringiensis has been introduced into some crop plants to make them resistant to insect destruction
Indicate whether the statement is true or false
TRUE
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Following its initial activation, how does a G protein become inactivated?
A. The G-protein, a subunit, is digested and recycled. B. It spontaneously loses activity within a few seconds. C. The G-protein, a subunit containing a GTP, eventually reassociates with the G-protein bg dimer. D. The G-protein, a subunit GTP, is hydrolyzed to GDP allowing reassociation of the G-protein a subunit and ?? dimer. E. The receptor becomes internalized.
Polyploidy refers to an individual ____ and occurs most often in ____
a. with one or more additional sets of chromosomes; animals b. with one or more additional sets of chromosomes; plants c. lacking one or more sets of chromosomes; plants d. lacking one or more sets of chromosomes; animals e. lacking individual chromosomes; animals
As global temperatures increase, which of the following scenarios is most likely to happen?
A. Temperatures and humidity decrease. B. Sea surface temperatures and ocean heat content decrease. C. Glaciers and snow coverage decrease. D. Extreme weather events decrease.
As unwinding of the helix occurs during DNA replication, tension referred to as ________ is created ahead of the replication fork. This tension is relieved by the action of ________
A) processivity; primase B) processivity; DNA gyrase C) supercoiling; DNA gyrase D) supercoiling; single-stranded binding proteins E) supercoiling; DNA helicase