Which was an early tetrapod innovation?
a. limbs evolved from dorsal fins
b. cartilaginous pectoral girdle
c. four chambered heart
d. stereoscopic vision
e. inner ear changes to detect airborne sounds
ANSWER: e
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The partial pressure of a gas:
A. is its fractional concentration multiplied by the overall, atmospheric pressure. B. is a measure of how quickly a gas moves across a respiratory surface. C. is the weight of a given volume of the gas. D. is equivalent to the total atmospheric pressure. E. is the difference in concentration of that gas inside and outside of a cell.
Down syndrome involves trisomy
a. 3. b. 5. c. 15. d. 19. e. 21.
Alloploidy provides a mechanism for slow speciation
________ Indicate whether the statement is true or false.
A blanket from a child with chickenpox is likely to be contaminated with the virus that causes chickenpox (Varicella-zoster virus). What is the blanket called?
A) fomite B) host C) pathogen D) vector