Magnesium chloride is a salt formed with ionic bonds between one magnesium ion and two chloride ions. Magnesium has two electrons in its outer shell and chlorine has seven electrons in its outer shell. How are the electrons transferred between these atoms?
A. Both magnesium and chlorine are reduced.
B. Magnesium is oxidized and chlorine is reduced.
C. Chlorine is oxidized and magnesium is reduced.
D. Both magnesium and chlorine are oxidized.
B. Magnesium is oxidized and chlorine is reduced.
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Your finger touches a hot pot on the stove. Information is carried via ____ neurons to the ____, where
neurons carry information to the ____, making you aware of the hot pot.
a. afferent; basal ganglia; primary sensory area b. efferent; thalamus; sensory association area c. efferent; hippocampus; primary sensory area d. afferent; thalamus; primary somatosensory area e. interneurons; thalamus; somatomotor area
__________ are body parts that look alike in different lineages but did not evolve in a common
ancestor. Fill in the blank(s) with the appropriate word(s).
Pre-mRNA is ____________________ and ____________________ before it becomes mRNA and
moves to the cytoplasm. Fill in the blank(s) with the appropriate word(s).
Impetigo can be caused by either Staphylococcus aureus or Streptococcus pyogenes. Culture-based identification of the causative organism can be complicated by
A. the common surface antigens of these two organisms. B. the ability of S. aureus to kill S. pyogenes. C. their common optimal growth temperature, 37°C. D. the fastidious nature of both organisms.