What is/are the factor(s) involved in the optimal foraging theory?
a. availability of parasites
b. availability of predators
c. energy needed to capture mates
d. energy that foraging provides
e. energy needed to capture food and energy that the food provides
E
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In addition to the shift to bipedalism, what major trend or trends do we see in hominin evolution as we look across our entire fossil record? Select all that apply
A. increase in body size B. increase in brain size C. significant increase in the difference in size between males and females D. increase in tooth size E. None of the above.
When a ciliate reproduces asexually by mitosis:
A. The macronucleus divides into two with each new cell receiving an identical macronucleus. B. The macronucleus divides into four micronuclei with each new cell receiving two micronuclei each. C. The macronucleus doesn't divide but it goes to one new cell and the micronuclei go to the other. D. The macronuclei fuse with the micronuclei and then divide into two with each new cell receiving an identical fused nucleus. E. none of the other choices provided
Garrod first proposed that:a
metabolic defects were due to the lack of an enzyme. b. metabolic defects were due to excess enzyme production. c. metabolic defects were due to chromosomal changes. d. mutations were heritable. e. metabolic defects did not occur in humans.
A lithium atom contains 3 electrons, whereas a fluorine atom contains 9 electrons. Which correctly describes the formation of a bond between lithium and fluorine atoms?
A) Lithium and fluorine will share one pair of electrons. B) A hydrogen bond will form between the partially positive lithium and the partially negative fluorine. C) Lithium will donate an electron to fluorine, making a positive lithium ion and a negative fluoride ion that are attracted to each other. D) Lithium will take an electron from fluorine, making a negative lithium ion and a positive fluoride ion that are attracted to each other. E) Lithium and fluorine share two pairs of electrons.