A circulatory system that allows some mixing
of oxygenated and oxygen-poor blood is
indicated by
a. A.
b. B.
c. C.
d. A and B.
e. all of these
B
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The Fox2P gene is thought to be related to language in humans. At prophase I, how many copies of the Fox2P gene are present in a cell? Keep in mind that humans are diploid
A. two copies, one on each homologous chromosome B. four copies, one on each sister chromatid in a pair of homologous chromosomes C. eight copies, one on each sister chromatid in a pair of homologous chromosomes D. eight copies, one on each strand of each chromatid per homologous pair
During winter months in temperate environments organisms can die from:
a. high rain fall. b. freezing. c. low sunlight. d. increased predation. e. increased pH level.
On both the eastern and western coasts of the USA, the subtidal zone contains very productive
a. seagrass meadows. b. Laminaria seaweeds. c. Ulva flats. d. both a and b e. both b and c
In following the hydrologic cycle,
a) CO2 is released in respiration b) H2O is returned to soil via evaporation c) H2O is returned to air via transpiration d) CO2 is fixed in photosynthesis