The _____ of an embryo differentiates into the nervous system and the skin.
A. ectoderm
B. mesoderm
C. periderm
D. endoderm
Answer: A
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For 2009, the average number of rapes was over ________ per day in the United States alone
a. 30 b. 80 c. 160 d. 240
The word pornography is derived from the Greek word pornographia, which means, "____."
a. to dance seductively c. to write about prostitutes b. to paint erotic images d. to be aroused by sex
Which of the following hormones primarily helps in sustaining pregnancy?
A. Luteinizing hormone B. Testosterone C. Gonadotropin-releasing hormone D. Human chorionic gonadotropin E. Follicle-stimulating hormone
What is meant by the negative feedback loop for females and for males? How does it operate? Describe its similarities and differences between females and males.
What will be an ideal response?