Flowering plants originated during the

A. Permian Period.
B. Tertiary Period.
C. Devonian Period.
D. Cretaceous Period.
E. Jurassic Period.


D. Cretaceous Period.

Biology & Microbiology

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Which theory was helpful to Darwin in the formulation of his theory of evolution?

a. catastrophism b. inheritance of acquired characteristics c. uniformitarianism d. continental drift e. special creationism

Biology & Microbiology

Which of the following is the sister group to

human? a. earthworm b. lizard c. tuna d. mouse e. none of these

Biology & Microbiology

A pharmaceutical company has developed a new compound that is well tolerated by the body and inhibits the sterolergosterol synthesis. Screening of this anti-infectious agent activity should be directed toward A. Chlamydia species

B. Viruses C. Fungi D. Rickettsia species E. Bacteria

Biology & Microbiology

All of the following are true regarding African trypanosomiasis EXCEPT

A) it is also known as "sleeping sickness." B) all subspecies of Trypanosoma brucei have multiple hosts. C) it is transmitted by the tsetse fly. D) death ultimately occurs without proper treatment. E) Trypanosoma brucei gambiense is the more common cause of disease.

Biology & Microbiology