What two types of contractions do smooth muscles perform?
What will be an ideal response?
slow, sustained contractions and slow, wavelike contractions
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When the concentration of a ligand is equal to the KD which of the following is true?
A. All of the receptors are bound to ligands. B. Half of the receptors are bound to ligands. C. All of the ligands and receptors are bound to each other. D. All of the ligands are bound to receptors. E. Half of the ligands are bound to receptors.
_____ are suspensions of fine dust or moisture in the air that contain live pathogens, whereas droplets are dried microscopic residues ejected from the mouth and nose.
Fill in the blank(s) with the appropriate word(s).
A balloon permeable to water but not to glucose contains a 10% glucose solution. A beaker contains a 5% glucose solution. Which of the following is TRUE?
A) The solution in the beaker is hypertonic relative to the solution in the balloon. B) The solution in the balloon is isotonic; the solution in the beaker is hypertonic. C) The solution in the balloon is hypotonic relative to the solution in the beaker. D) The solution in the balloon is hypertonic relative to the solution in the beaker.
The exclusionary rule is the Supreme Court rule that states that ______.
A. illegally seized evidence cannot be used to obtain a conviction B. special regulations promulgated by the president to keep foreign aliens from entering the country apply only during a national crisis C. a defendant's previous record cannot be raised in a trial D. evidence not related to a crime must be excluded from a person's trial