In which biome would one find sclerophyllous vegetation?
A) tundra
B) taiga
C) shrubland
D) tropical forest
C
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Your colleague proposes to test the mechanism of ant navigation by placing a food source 7 meters (m) from the nest. She then takes ants from the nest and places them in a spot that is 4 m from the nest and 3 m from the food source
Based on the previous data, where do you expect the ants to start searching for their nest on their return trip? A) after they have traveled 3 m from the food source B) after they have traveled 4 m from the food source C) after they have traveled 7 m from the food source D) as soon as they leave the food source
Methane-producing archaeons in the rumens of cows and bioluminescent bacteria within the bodies of squid are both examples of ____ , where organisms have "evolved together."
Fill in the blank with the appropriate word.
Jacob, Monod, and Pardee constructed a mutant strain of E. coli that carried a lacI-gene mutation (encodes the lac repressor). Which is TRUE of this mutant strain?
A. Trancription of the lac operon is repressed. B. Trancription of the lac operon does not change. C. The lac operon is constitutively expressed. D. Nonfunctional proteins are produced. E. The lac operon is constitutively expressed and nonfunctional proteins are produced.
Which type of microscope can be used to observe living cells and tissues?
a. LM b. TEM c. SEM