Which of the following events does NOT occur during the germinal stage?
A) The first cell divisions occur. B) The zygote forms a neural tube.
C) Implantation occurs. D) The trophoblast and blastocyst form.
B
Psychology
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The repeated-measures experimental design may lead to ambiguous results
unless a. the subjects are matched on some relevant variable b. the dependent variable is measured only after the introduction of the independent variable c. the alpha error is increased to at least .50 d. there is a separate control group
Psychology
The specialized pores located in the axon membrane that open or close are termed
A) receptors. B) voltage transporters. C) autoreceptors. D) ion channels. E) sodium-potassium transporters.
Psychology