Which of the following is an organism that
possesses chaetae and nephridia and exhibits
coordinated movements of circular and
longitudinal muscle?
a. millipede
b. tapeworm
c. polychaete
d. hookworm
e. flatworm
C
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One factor that seems to aid in maintaining lipid stability in hyperthermophilic Archaea is that dibiphytanyl tetraether lipids form a(n)
A) covalently bonded monolayer cytoplasmic membrane. B) interlocking bilayer cytoplasmic membrane. C) interlocking lattice with the cell wall. D) pseudomembrane immediately inside the cytoplasmic membrane.
The fact that modern Native Americans share certain genetic markers with indigenous populations in southern Siberia, but not with others, is evidence that
A) the ancestors of modern Native Americans migrated from Siberia to the Americas. B) the ancestors of Native Americans migrated from Europe to the U.S. east coast. C) the ancestors of modern Siberians migrated from the west coast of the U.S. to Russia. D) Mitochondrial Eve lived in Siberia and her descendants migrated to the U.S.
What are 3 adaptations of penguins for living in the sea?
What will be an ideal response?
What is the most important factor that controls the seasonal distribution of rain in the Tropical Savanna Climate (Aw)?
A. the strength of the westerlies B. north-south migration of the Intertropical Convergence Zone and the Subtropical High C. the movement of the subpolar low D. the leeward rainshadow effect