Methane, which is composed of carbon and hydrogen, lacks functional groups and is a gas at room temperature. Upon

replacing one of the hydrogen atoms with a hydroxyl group, methane is converted to methanol, which is a liquid at room
temperature. Explain the reason behind this difference in physical properties. What will be an ideal response?


Concepts to Consider: Polar nature of methanol compared to methane is due to polar
hydroxyl group; polarity of methanol allows formation of hydrogen bonds and increases
cohesiveness of this chemical.

Biology & Microbiology

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A deletion of one base pair that alters the sequences of codons is called a(n)

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Which of the following is the longest lasting type of immunity?

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A. mRNAs. B. RNA-induced silencing complexes (RISC). C. ribozymes. D. rRNAs. E. tRNAs.

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