Betapropiolactone is not as useful as ethylene oxide as a sterilizing agent because it does not penetrate materials as readily as ethylene oxide.
Answer the following statement true (T) or false (F)
True
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Imagine you conduct a parabiosis experiment with two strains of mice, one of which lacks a functional leptin gene (ob strain) while the other lacks a functional receptor for this hormone (db strain). Which of the following outcomes would you observe?
A. no weight change in the ob mouse B. no weight change in the db mouse C. increased body weight in the ob mouse D. decreased body weight in the ob mouse E. decreased body weight in the db mouse
Seasonal migration is common among marine fisheries. Describe the types and indicate the primary causes of migration
What will be an ideal response?
DDT and PCBs are no longer legally used anywhere in the U.S
Indicate whether the statement is true or false
Which of the following animals do NOT use echolocation?
a. Bats b. Porpoises c. Dolphins d. Moths e. Whales