__________ are jawless fishes with a backbone. Fill in the blank(s) with the appropriate word(s)
Lampreys
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True or false:
_____ The nervous systems of all animals are organized into peripheral and central components. _____ The PNS consists only of sensory neurons. _____ All neurons have either a sensory or motor function. _____ All neuronal cell bodies are either in the brain or spinal cord. _____ All nervous system responses involve input from the brain. _____ The organization of the human nervous system is completely different from that of other vertebrates. What will be an ideal response?
Four of the five answers listed below are components of the human respiratory system. Select the
exception. a. thoracic cavity b. trachea c. diaphragm d. spiracle e. larynx
There are ________ different olfactory receptor proteins in humans that allow us to sense a variety of odors
A) 5 to 10 B) 350 to 400 C) 10 to 15 D) 100,000 to 500,000 E) 1,000 to 1,500
HPV is a:
a) Single-stranded positive RNA virus b) Double-stranded DNA virus c) Double-stranded RNA virus d) Single-stranded negative RNA virus