Which of the following types of joints allows the LEAST amount of movement?
a. fibrous
b. ball and socket
c. hingelike
d. synovial
e. cartilaginous
A
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Male frogs give calls that attract female frogs to approach and mate. Researchers examined mating calls of closely related tree frogs in South America. If reinforcement is occurring, what would you expect if you compare the calls of the two species
in zones of sympatry versus zones of allopatry? A) Calls would be about the same in both areas. B) Calls would be more similar in areas of sympatry. C) Calls would be more different in areas of sympatry.
Segregation
A. happens whenever a cell is fertilized. B. happens when chromosomes separate and move to the poles. C. is the separation between daughter cells after cell division. D. None of these answers define segregation.
Processing of filtrate in the proximal and distal tubules _____
A) achieves the conversion of toxic ammonia to less toxic urea B) maintains homeostasis of pH in body fluids C) regulates the speed of blood flow through the nephrons D) reabsorbs urea to maintain osmotic balance
Why are open coal mines (strip mines) more likely to result in acid mine drainage than are underground mines?
A. Archaea such as Ferroplasma acidarmanus that produce acid from ore only live aboveground. B. Rainwater can leach acids from strip mines but not from underground mines. C. Air exposure increases the oxidation rate of sulfur and iron by bacteria, and oxidized sulfur or iron can combine with rainwater to form a strong acid. D. Strip mines have more iron- and sulfur-containing minerals that may be oxidized by acid-producing bacteria.