In a small stream, you pick up a rock and observe many small, flattened worms crawling on its undersurface. You decide that they belong to the phylum Platyhelminthes. To which class do they probably belong?

#Question id: 11121

#SCPH28 | Zoology

Which of the following statements concerning the mechanoreceptive receptor potential is/are true?

#Question id: 11125

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

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?

#Question id: 11125

#SCPH28 | Zoology

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?

#Question id: 11126

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

Which of the following is characteristic of the events occurring at an excitatory synapse?

#Question id: 11126

#SCPH28 | Zoology

Which of the following is characteristic of the events occurring at an excitatory synapse?

#Question id: 11127

#SCPH28 | Zoology

As the receptor potential rises higher above threshold, which of the following best characterizes the new frequency of action potentials?