What is the major difference between polar and nonpolar covalent bonds?
What will be an ideal response
Polar bonds have an unequal sharing of electrons resulting in a slight negative charge at one end of the molecule and a slight positive charge at the other end. Nonpolar bonds have an equal sharing of electrons, resulting in a balanced charge among the atoms.
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Which of the following is an ascending tract of the spinal cord?
A. Lateral tectospinal tract B. Medial reticulospinal tract C. Ventral corticospinal tract D. Vestibulospinal tract E. Gracile fasciculus
Which plasma proteins are not produced by the liver?
A. Gamma globulins B. Fibrinogen C. Albumin D. Alpha globulins E. Enzymes involved in the clotting process
Which of the following is most important in preventing choking?
A. Extrinsic muscles of the larynx B. Glottis C. Epiglottis D. Soft palate E. Vocal folds
Ten-year-old Tina falls while climbing a tree and lands on her back. Her frightened parents take her to the local emergency room where she is examined. Her knee jerk reflex is normal and she exhibits a negative Babinski reflex. These results suggest that
A) Tina has injured one of her descending nerve tracts. B) Tina suffered no damage to her spinal cord. C) Tina has a spinal injury in the lumbar region. D) Tina has injured one of her ascending nerve tracts. E) Tina has a spinal injury in the cervical region.