The active ingredient in Ecstacy works by
a. binding to active transporters in brain
neuron membranes.
b. blocking the movement of
neurotransmitters across synapses
c. binding to neuroreceptors on the ends of
neurons
d. stopping signal transmissions down the
length of an axon
e. inhibiting the release of neurotransmitters at
the synaptic junction
A
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a. mitochondria of brown adipose tissue cells carry out reactions that produce heat b. a shivering response for heat production by skeletal muscle c. the body stores more energy as fat d. a decrease in metabolic rate
The pronghorn antelope of the United States and the saiga antelope of the central Asian steppes live in similar habitats and have similar adaptations. Which of the following features would you be surprised to find in a saiga antelope?
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Fungi obtain food by:
A) producing antibiotics that internally destroy bacteria. B) engulfing food through phagocytosis and then digesting it within fungal cells. C) absorbing predigested material. D) photosynthesis.
Which of the following is NOT a bryophyte?
1) Sequoia tree 2) Moss 3) Liverwort 4) None of the above