A complete cell lineage map exists for
A. Drosophila.
B. C. elegans.
C. human.
D. mouse.
Answer: B
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Which marine zone is one of the most stressful habitats on Earth?
a. the pelagic province b. the continental shelf c. deep sea trenches d. the abyssal zone e. the intertidal zone
The molecule that contains the information for making a cell's proteins and must replicate itself during cell division
A. DNA. B. ATP synthase. C. RNA. D. FAD. E. NAD.
In an anatomy lab, you are shown a skeleton from a sea cucumber, with its internal calcium-rich spines. You would call this a(n)
A. exoskeleton. B. hydrostatic skeleton. C. gastrovascular cavity. D. endoskeleton. E. vascular canal.
What is the respiratory surface where gas exchange occurs?
A) trachea B) bronchioles C) pharynx D) alveoli