A population
a) consists of all the organisms of a particular habitat
b) consists of any organism of the same species
c) consists of all the breeding individuals in a group
d) is a group of coexisting organisms capable of interbreeding
e) is a semi-isolated group that maintains some level of gene flow with other groups
Answer: d) is a group of coexisting organisms capable of interbreeding
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Which of the following is not an example of suction feeding?
A. trapping prey with blades of baleen B. rapid expansion of a fish's mouth to take in water and food C. insects obtaining a blood meal D. suckling of young mammals E. All of the answer options are examples of suction feeding.
In addition to controlling states of arousal, the reticular formation also ____
a. controls postural muscle activity b. regulates blood pressure and respiratory activity c. releases hormones that aid in sleep d. controls visual inputs e. controls language and speech patterns
What is respiration?
What will be an ideal response?
In your Ph.D. research, you use thin slices of brain tissue to study neuronal signaling. You attach an electrode to a single neuron, but cannot detect any activity. What is the most likely explanation?
A. When you sliced the brain, you disconnected the cell from its dendrites. B. Excessive myelination is blocking inputs to the cell. C. When you sliced the brain, you disconnected the cell from its neuroglia. D. Neurons are not electrically active -- you should be recording neuroglia instead.