Just as cows consume grass for nourishment, bees consume ___
a. pollen
b. nectar
c. seeds
d. a and b
e. all of the above
Answer: d. a and b
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David Pribnow studied the base sequences of promoters in bacteria and bacterial viruses. He found two conserved regions in these promoters (the -10 box and the -35 box). These two regions of the promoter _____
A) signal the initiation site B) bind the sigma subunit that is associated with RNA polymerase C) attach the correct nucleotide triphosphate to the template DNA strand D) separate the two DNA strands
________ allows mother pinnipeds to adjust the time of pregnancy of less than 1 year to an annual time frame
a. A gestation period b. Polygny c. Seasonal delayed implantation d. Lactation
Most invertebrates, such as the annelid, have nephridia.
Answer the following statement true (T) or false (F)
You uncovered a fossil that you suspect is around 100 million years old. Which of the radioisotope pairs in the table below could you eliminate as an appropriate choice for radioisotope dating the accompanying rock? 
A. Uranium-235/Lead-207 (half-life = 710 million years; useful dating range = 10 million-4.5 billion years) B. Uranium-238/Lead-206 (half-life 4.5 billion years; useful dating range = 10 million-4.5 billion years) C. Potassium-40/Argon-40 (half-life = 1.3 billion years; useful dating range =100,000-4.5 billion years) D. Carbon-14/Nitrogen-14 (half-life = 5,730 years; useful dating range = 100-50,000 years) E. Rubidium-87/Strontium-87 (half-life = 47 billion years; useful dating range = 10 million-4.5 billion years)