When two atoms share a pair of electrons, the bonding is referred to as:
A. ionic.
B. unstable.
C. covalent.
D. hydrogen.
Answer: C
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When members of the normal microbiota of the human body become pathogenic and produce disease under certain circumstances, they are referred to as ________ pathogens.
A. conditional B. occasional C. opportunistic D. partial
A malfunction in one of the lysosomal enzymes
responsible for breaking down gangliosides leads to a. cystic fibrosis.. b. Huntington’s disease. c. cretinism. d. muscular dystrophy. e. Tay-Sachs disease.
The three major domains of life are
What will be an ideal response?
Which of the following statements about hormones is not true?
A. Hormones are secreted by axons. B. Hormones are targeted to specific organs within the body. C. Hormones are carried by the bloodstream. D. It takes time to deliver hormones to the cells. E. The effects of hormones are long lasting.