Trophic-level transfer efficiency averages about
A. 1%.
B. 25%.
C. 33%.
D. 10%.
E. 0.1%.
D. 10%.
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True or false: In the sequence AGGCCT, an available phosphate group would be found at the 5' end of the nucleotide labeled "T."
A. true B. false
Fairy shrimp are a type of crustacean that is typically found in temporary ponds across the
world, including desert areas and ice-covered mountain lakes. They swim with their ventral side up (i.e., “upside down”) using their leaf-like swimming legs as paddles. Based on this description, fairy shrimp have a __________ ecological niche
a. broad b. narrow c. variable d. herbivorous
Which of the following groups is not a type of mammals?
A. Monotremes B. Eutherians C. Marsupials D. All of the above are types of mammals
Histone modifications that play a role in silencing expression of tumor suppressor genes are influenced directly by
A) microRNAs. B) epidermal growth factor signaling. C) p53 activity. D) carcinogens. E) APC activity.