How do cells correct errors in dna that would disrupt their function?

enzymes use the surrounding sections of the dna to determine the correct structure; then they repair the errors by replacing atoms in the existing molecule.

enzymes cut out the erroneous part and then use the complementary dna on the intact strand to add the correct nucleotides.

enzymes use rna that was made before the damage occurred to make a new double strand of dna to insert into the molecule.

the erroneous part has weaker bonds to the dna molecule, so it falls off, and the proper nucleotides are attracted to the gap to repair the damage

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.