Breast milk production requires approximately ____ kilocalories per day.
Fill in the blank(s) with the appropriate word(s).
800
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According to Hamilton's rule, _____
A) natural selection does not favor altruistic behavior that causes the death of the altruist B) natural selection favors altruistic acts when the resulting benefit to the beneficiary, corrected for relatedness, exceeds the cost to the altruist C) natural selection is more likely to favor altruistic behavior that benefits an offspring than altruistic behavior that benefits a sibling D) the effects of kin selection are larger than the effects of direct natural selection on individuals E) altruism is always reciprocal
A flagellum is to a bacterium as ____ is to a
boat.
a. a captain b. an engine c. a propeller d. a bow e. an anchor
The poly-A tail is thought to faciliate the export of mRNA from the nucleus
__________________ Indicate whether the statement is true or false.
The slowest but most effective control for acid-base balance is the.
A) respiratory system. B) buffer systems in the blood. C) kidney. D) brain.