Sensory neurons responsible for somatic sensations are located in the____
a. skin
b. spinal cord
c. brain
d. vagus nerve
e. cranial nerves
ANSWER: a
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How do sensory cells communicate different types of information to the brain—touch versus light for example?
A. by firing action potentials at different frequencies in the same neuron B. by firing action potentials of varying amplitudes in the same neuron C. by using different neurons for different stimuli (e.g., light and touch) D. by using different kinds of electrical signals in the same neuron as the information is conveyed to the brain E. by using different kinds of receptor potentials in the same neuron
A technique used to identify species by matching up sequence differences in a standard region of the genome is called
a. mutation counting. b. genome sequencing. c. DNA barcoding. d. nucleotide matching. e. PCR
What compound does the Citric acid cycle start?
What will be an ideal response?
Yeast genes contain ________ introns than those of most eukaryotic organisms
a. more b. fewer c. longer d. duplicated