In chemical synapses that involve a so-called second messenger, typically a G-protein linked to the postsynaptic receptor is activated when neurotransmitter binds to that receptor. Which of the following represents an activity performed by the activated second messenger?

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#Question id: 10510

#I Life Science/ Life Sciences Group – I-V

Constitutive chemical defenses are effective against many different herbivores, including insects and mammals. Hemlock (Cicuta sp.) produces which toxins that a polyacetylene prolongs the repolarization of neuronal action potentials.

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#Question id: 1681

#I Life Science/ Life Sciences Group – I-V

What do MHC class III genes encode?

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#Question id: 15197

#SCPH06 I Botany

In the following pedigree shows the segregation of two different recessive traits.

Assuming that both traits are 10 cM apart on the X chromosome, what is the probability that a male child will have both recessive traits?

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#Question id: 5245

#SCPH28 | Zoology

Which method of gene transfer involves direct contact between the bacteria?

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#Question id: 1050

#SCPH28 | Zoology

Which does not refer to the shape of a virus?