What characteristic does not describe a vertebrate?
a. notochord.
b. backbone.
c. exoskeleton.
d. gills or lungs.
e. posterior tail.
C
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The single ventricle in an amphibian heart means the oxygenated and deoxygenated blood mix. How do amphibians manage to survive despite this inefficiency?
A. The absorb large amounts of fluid. B. They transport oxygen across the skin. C. They keep their body temperatures high. D. They move very slowly. E. They keep gills into adulthood. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about amphibian features? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The number of electrons for the atom depicted in the figure is
a. 5. b. 7. c. 8. d. 15. e. 22.
As an embryo develops, cells become specialized and form different types of tissues and organs by expressing different subsets of their DNA. This process is called:
a. growth b. development c. differentiation d. maturation e. cloning
Which of the following human bones is
incorrectly paired?
a. fibula--tibia b. ulna--radius c. scapula--clavicle d. sternum--ribs e. femur--carpals