which is false about early childhood sleep?
What will be an ideal response?
night wakings are NOT a normal developmental phenomenon
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Diploid cells ____________________
a. have a complete set of homologous chromosomes b. do not have homologous chromosomes c. have 48 chromosomes d. undergo crossing over of homologous chromosomes during mitosis
A defining characteristic of eukaryotic organisms is that they
A. use the leucine zipper primarily for the production of the amino acid tryptophan. B. carry out protein synthesis only in the presence of the cAMP molecule. C. have only operons to assist in gene expression. D. have their transcription occurring in the nucleus and translation in the cytoplasm. E. have their transcription occurring in the cytoplasm and translation in the nucleus.
During the Snowball Earth temperatures at the equator rarely exceeded -20 degrees Celsius. Why didn't heat from the sun melt the ice?
A. The ozone layer absorbed all the heat. B. Ice reflected most of radiant energy. C. The earth's core was cooled and kept the ice frozen. D. The high levels of atmospheric moisture created extensive cloud cover.
In the reaction A? +B ?A + B?,
A. molecules A and B are both oxidized. B. molecules A and B are both reduced. C. molecule A is oxidized and molecule B is reduced. D. molecule A is oxidized and molecule B is unchanged. E. molecule A is reduced and molecule B is oxidized.