Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
This question asked you to apply the definition of electronegativity to predict the partial charges on
atoms in a polar covalent bond. If you got the correct answer, great job! If you got an incorrect answer,
where did the process break down? Did you recognize that the higher electronegativity on N meant it had
more attraction for electrons than H? Did you realize that a stronger pull for electrons gave N a partial
negative charge, while this led to a partial positive charge on each H?
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In multicellular organisms, specialization in
structure and function of cells is caused by
a. inhibition of transcription. b. methylation of nucleotides. c. a differential expression of genes. d. translation without transcription. e. more than one of these.
The folds of the stomach are called
a. villi. b. microvilli. c. tight junctions. d. rugae. e. haustra.
The meninges are composed of:
a. bone and dura mater only. b. dura mater and arachnoid only. c. arachnoid and pia mater only. d. dura mater, pia mater, and archnoid only. e. bone, dura mater, pia mater, and archnoid only.
Which fungal phylum includes members that are also called club fungi?
a. Chytridiomycota b. Basidiomycota c. Glomeromycota d. Zygomycota