Which statement best describes how one neuron stimulates another?
A) The neurons are physically connected, so the action potential continues movement.
B) Calcium ions diffuse across the synapse.
C) Neurotransmitter molecules diffuse across the synapse.
D) Sodium ions jump across to the next neuron's membrane.
Answer: C
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Four of the five answers below characterize one group of chordates. Select the exception
a. feathers b. endothermic c. four-chambered heart d. hollow skeleton e. small teeth
Which of the following is not true about ferns?
a. their gametophytes and sporophytes are both photosynthetic b. their sporophytes are much smaller than the gametophytes c. their underground stem is called a rhizome d. their leaves are called fronds e. clustered, stalked sporangia called sori arise on the backs of the fronds
The protists include photosynthetic, parasitic, and pathogenic species
Indicate whether the statement is true or false
An old farm that has been abandoned for 65 years is being sold to develop the land for housing. You attend a town meeting and describe this as a bad idea. Your evidence to support this claim relates to the removal of trees to build the homes. You tell the crowd that removal of the trees will limit the number of predators in the area, and therefore allow the local mouse population to increase, and with the mice, an increase in disease. Is basis of your argument true or false?
Answer the following statement true (T) or false (F)