Placental mammals appeared during the _____ period

What will be an ideal response?


Tertiary

Biology & Microbiology

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Which mechanism is the least likely explanation for high chromosome numbers in ferns?

a. dysploidy b. polyploidy c. increased independent assortment d. increased recombination rates e. homospory

Biology & Microbiology

Arsenic is a poison that binds to a molecule needed to build acetyl CoA. Based on this information, which part of cellular respiration would be stopped if arsenic were ingested?

A) glycolysis B) citric acid cycle C) electron transport chain D) ATP synthase

Biology & Microbiology

Which of the following is a member of the Flaviviridae that is NOT an arbovirus?

A) eastern equine encephalitis virus B) dengue virus C) hepatitis C virus D) hepatitis E virus E) West Nile virus

Biology & Microbiology

Tuberculosis is caused by a

A. fungus. B. bacterium. C. worm. D. protist. E. virus.

Biology & Microbiology