Which is FALSE concerning the reticular formation:
-It is a widespread system of neurons and axons in the brainstem that extends from the medulla oblongata to the thalamus.
-The reticular activating system continues from this point (the thalamus).
-stimulation produces generalized cortical activation (wakefulness).
-stimulation produces generalized cortical depression (sleepiness).
-stimulation produces generalized cortical depression (sleepiness).
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A woman has been treated three times for trichomoniasis, and each time the symptoms disappear for a couple of weeks and then return. She indicates that she has been in a monogamous relationship and that her partner has experienced no symptoms. Which of the following is the most likely explanation for her repeated infections?
A. The woman has been misdiagnosed and has a yeast infection which will need a different antimicrobial. B. The woman is allergic to the prescribed antimicrobials. C. Her partner has an asymptomatic infection and keeps re-infecting her. D. The Trichomonas has become resistant to the antimicrobial that was prescribed.
A modified form of cellulose found in the exoskeletons of insects and crustaceans is known as:
A. chitin B. starch C. amylose D. glycogen
The ________ is an enveloped virus with spikes
A. tobacco mosaic virus B. adenovirus C. influenza virus D. T4 bacteriophage
A double stranded DNA strand contains 26 pyrimidines. How many purines will the copied strand contain?
A. 13 B. 26 C. 52 D. 0