Which type of neuron is found only in the brain and spinal cord?
A) sensory neuron
B) interneuron
C) motor neuron
D) glial cell
B
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A small amount of DNA was located at a crime scene. Which one of the following techniques is most likely to be used to amplify the DNA so it can be identified more accurately?
A) genetic engineering B) use of DNA ligase to recombine the pieces of DNA C) gene therapy D) DNA sequencing E) polymerase chain reaction
Which of the following best describes scientific method?
A) A way to prove hypotheses correct B) A systematic means of observation and reasoning C) A method that relies on chance discoveries D) A method that proves educated guesses
Blisters are
A. confined to epidermis B. originate in the dermis C. originate in the subcutaneous layer D. result from a separation of epidermis from dermis E. None of the choices are correct
Long term use of heroin is associated with which set of consequences?
A. anxiety, jitters, insomnia, headaches B. weight gain, poor cognitive performance, irritability C. addiction, hepatitis, HIV/AIDS, various bacterial infections D. apathy, euphoria, hallucinations E. cardiac and/or respiratory arrest, sudden death