The ____ of box turtles in the United States includes all of the individual box turtles that could mate and reproduce within the 50 states
Fill in the blank with the appropriate word.
population
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New mothers may benefit from the aid of lactation consultants when learning to breastfeed. These consultants give advice on technique, and help the mother to feel relaxed and confident. What hormone is associated with calm, warm emotions and is also critical for the milk let-down reflex?
A. prolactin B. estradiol C. oxytocin D. mammotropin
The type of viral infection in which a virus enters a host cell and remains dormant in the host cell's chromosome is
A. a rare form of viral infection. B. a transgenic infection. C. a lytic infection. D. a systematic infection. E. a lysogenic infection.
Subatomic particles that have a negative charge and orbit around the nucleus _______________
Fill in the blank(s) with the appropriate word(s)
The vitelline layer of the sea urchin egg
A) is outside of the fertilization membrane. B) releases calcium, which initiates the cortical reaction. C) has receptor molecules that are specific for binding acrosomal proteins. D) is first visible only when organogenesis is nearly completed. E) is a mesh of proteins crossing through the cytosol of the egg.