A Rapidly Dividing Cell Is Exposed to a Chemical That

question 37

Multiple Choice

A rapidly dividing cell is exposed to a chemical that converts the bond that forms between adenine and thymine to a covalent bond.Which of the following is most likely to occur?

• A) DNA replication would produce two molecules of DNA with mutations at every base that once held an A-T base pair.
• B) DNA replication would not occur because the two nucleotide strands that make up the DNA molecule would not be able to separate.
• C) DNA replication would occur more slowly because DNA repair proteins would have to fix the covalent bonds before replication could begin.
• D) DNA replication would be faster because covalent bonds require less energy to break than hydrogen bonds.

Understand the structural adaptations of the alimentary canal for efficient digestion and nutrient absorption.

Identify the various types of teeth and their specialized functions.

Understand the different layers of the alimentary canal and their respective roles.

Recognize the structural components of a tooth and their distribution.

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