Nitrogen has a higher electronegativity than hydrogen.  As a result you would expect that ammonia (NH3) molecules can form ________ with each other.

A. hydrogen bonds
B. ionic bonds
C. hydrophilic bonds
D. covalent bonds
E. cohesive bonds


Answer: A

Biology & Microbiology

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Scientists at NIH are making progress in using stem-cells to cure

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Which of the following is a purine base found in nucleotides?

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a. abscisic acid b. cytokinins c. auxins d. salicylic acid e. gibberellins

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