Which of the following is a difference between frogs and salamanders?
a. frogs have cloacas; salamanders do not
b. salamander larvae are tetrapods; frog larvae are not
c. salamanders have scales; frogs do not
d. frogs reproduce in water; salamanders only sometimes reproduce in water
e. more than one of these is a difference between frogs and salamanders
B
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Which group of organisms played an important role in shaping Earth’s atmosphere?
a. prokaryotes b. eukaryotes c. animals d. cyanobacteria
Protists are currently divided into informal groups based on their similarity to other kingdoms
A protist that is a decomposer is categorized as a(n) __________ protist.
a. animal-like b. plantlike c. funguslike d. autotrophic
Sharks differ from most other fish in that they lack ____.
A. gill slits B. scales C. bone D. paired appendages E. teeth
Early in the twentieth century, Walter Sutton and Theodor Boveri noted that the behavior of chromosomes during meiosis is identical to the behavior of genes during gamete formation. They proposed that genes are carried on chromosomes, which led to the
basis of the ________. A) Chromosome Theory of Inheritance B) First Law of Thermodynamics C) Chromosomal Maintenance Theory D) Law of Segregation E) Law of Independent Assortment