Down syndrome _____.

A) is observed only in females
B) is also known as trisomy 21
C) affects only the central nervous system
D) results from a deletion
E) is a Y-linked disorder, passed directly from father to son


Answer: B) is also known as trisomy 21

Biology & Microbiology

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a. true b. false

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A) 5'-capping regulation B) RNA splicing regulation C) intron/exon shuffling D) transcriptional regulation E) poly(A) tail addition

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An effective vaccine to prevent infection with Epstein-Barr virus (EBV, HHV-4) is available.

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

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When membrane proteins on an olfactory neuron are stimulated by the binding of a specific chemical, what is the immediate result?

A. Membrane hyperpolarization B. Neurotransmitter release C. Membrane depolarization D. Membrane repolarization E. Active ion transport

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