Author Question: The number 0.0247 expressed in scientific notation is ________. A) 2.47 10-4 B) 2.47 10-2 C) ... (Read 45 times)

cookcarl · **on:** Aug 27, 2018

The number 0.0247 expressed in scientific notation is ________.

A) 2.47 10-4
B) 2.47 10-2
C) 2.47 10-1
D) 24.7

Question 2

What key aspect of a depressant's chemical action sets it apart from the other classes of psychoactive drugs?

A) Depressants are active along the whole length of the neuron.
B) Depressants are only active at the synaptic cleft.
C) Depressants are irreversibly bound to neuron surface proteins.
D) Depressants are involved in the degradation of neurotransmitters.
E) none of the above