The smallest branches of ____ end with a large flame cell
a. nephrons
b. hepatic tubules
c. metanephridia
d. Malpighian tubules
e. protonephridia
E
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Meerkats are small desert mammals that live in groups of 20–50 animals. You observe one meerkat standing upright on a stump, looking around, while other meerkats forage for food. You hypothesize that this is an example of kin selection
What additional information would you need to know to evaluate your hypothesis? A. the body size of this meerkat relative to other members of the group B. the gender of this meerkat as well as that of all other members of the group C. the degree of genetic relatedness of this meerkat to all members of the group D. all other activities of this meerkat as well as those of all other members of the group E. the foraging success of this meerkat as well as that of all other members of the group
Which organism is used in the genetic engineering of plants?
a. E. coli b. T. aquaticus c. A. tumefaciens d. P. flourescens e. B. thuringiensis
Microvilli are indicated by
a. A. b. B. c. C. d. D. e. E.
A flap of tissue called the __________ directs air
through the __________, the opening to the __________ (windpipe). Fill in the blank(s) with the appropriate word(s).