Elephantiasis is caused by

A. blood flukes.
B. liver flukes.
C. filarial roundworms.
D. tapeworms.
E. flatworms.


Answer: C

Biology & Microbiology

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In mitochondria, exergonic redox reactions _____

A) are the source of energy driving prokaryotic ATP synthesis B) are directly coupled to substrate-level phosphorylation C) provide the energy that establishes the proton gradient D) reduce carbon atoms to carbon dioxide E) are coupled via phosphorylated intermediates to endergonic processes

Biology & Microbiology

Choose the observations supporting the hypothesis that the initiation of eye development in animals occurred only once. 

_____ In some organisms, Pax6-related genes are associated with development of the forehead. _____ A large number of different organisms use Pax6-related genes in eye development. _____ The DNA sequence of Pax6-related genes in animals is uniformly similar. _____ The common ancestor of animals had a complex eye.

Biology & Microbiology

Laboratory simulations provide indirect evidence

that organic compounds such as __________ and __________ self-assemble spontaneously under conditions like those thought to have prevailed on the early Earth. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Although most autotrophic microorganisms fix carbon dioxide using the Calvin-Benson cycle, this pathway is absent in archaea.

Answer the following statement true (T) or false (F)

Biology & Microbiology