本题目来源于试卷: IB Psychology HL Biological Approaches to Human Behaviour，类别为 IB心理学
[单选题]
What are chemicals that counteract a neubgy(,d7 l3j,bxii ur5rot 2q99 gpybvo/dransmitter and prevent a signal from being passed furyqb929gdo v p/ther to another neuron.
A. Agonists
B. Pheromones
C. Hormones
D. Antagonists
参考答案: D
本题详细解析:
Antagonists counteract neuun*t3g7r3rv-jr *dihnzg /yh*k(btn1: dc 2xrotransmitters and prevent a signal from being passed further. It decreases the activation of a synaptic receptor by blocking the neurotransmitters from binding/bonding. An example of an antagonist is scopolamine, wgtt:yrrkji u-*(1h 2/vcxnzn3d7dbrg3 nh* *hich affects the neurotransmitter Acetylcholine (ACh).
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