Silicon is an element that is found directly underneath carbon in the periodic table and thus has similar properties to carbon, including electron orbitals. How many electrons are in the valence shell of a silicon atom?

A) 1
B) 2
C) 4
D) 6


Answer: C

Biology & Microbiology

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Which of the following is the correct sequence of events for an altered protein that is secreted from the cell?

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What will be an ideal response?

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A drug is structurally similar to PABA and inhibits folic acid synthesis. It is most likely a(n)

A) nucleic acid analog. B) penicillin. C) tetracycline. D) azole. E) sulfonamide.

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