The rapid expansion of angiosperms late in the Mesozoic era appears to be related to their coevolution with ____.

A. dinosaurs
B. gymnosperms
C. insects
D. mammals
E. birds


Answer: C

Biology & Microbiology

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During transcription of mRNA in eukaryotes, some sequences are cut out of the primary transcript and the remaining sequences are joined together. This processing of mRNA is called _________.  

A.  termination B.  translation C.  splicing D.  capping E.  elongation

Biology & Microbiology

The arrival of an action potential at a synaptic terminal causes voltage-gated potassium channels to open

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

In the human immune system, the first line of defense against any microorganisms or foreign material encountered is known as

A) Acquired immunity B) Adaptive immunity C) Specific immune response D) Nonspecific immune response

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Harmless king snakes mimic the color patterns of venomous coral snakes, which serve as models

If avoidance were based solely on prior predator experience with the model, what do you predict would happen in areas where coral snakes were never present? A) No predictions can be made based on the information given. B) Predators would initially attack and eat king snakes but soon learn to avoid them. C) Predators would avoid king snakes. D) Predators would initially avoid king snakes but soon learn to attack and eat them. E) Predators would attack and eat king snakes.

Biology & Microbiology