Cone snails
a. are predatory.
b. are marine.
c. produce toxins used in feeding.
d. have shells that are prized for their beauty.
e. fit all of these descriptions.
Answer: e
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The term oxidation is derived from the name of the element oxygen. This is reasonable, because oxygen
A. attracts electrons very strongly. B. can be oxidized by accepting electrons. C. contains more electrons than are needed. D. passes electrons to many other types of molecules.
The solar system formed ____ billion years ago
a. 4 b. 5 c. 6 d. 7 e. 8
Active transport is different from simple diffusion in that active transport
A. requires energy. B. All of the answer choices are correct. C. moves molecules against a concentration gradient. D. requires transport proteins embedded within the cell membrane. E. moves molecules from an area of lower concentration to an area of higher concentration.
Describe the evolutionary relationships between the following organisms. Draw a family "tree" if
necessary. Include bony fish, amniotes, lizards, mammals, turtles, birds, reptiles, ray-finned fishes, amphibians, lungfish, and lobe-finned fishes. What will be an ideal response?