Roundworms live in an organism's intestines, and usually cause disease. the relationship between the roundworm and the organism in which it lives is best described as a

a) consumer-producer relationship
b) predator-prey relationship
c) parasite-host relationship
d) consumer-decomposer relationship

C

Parasite host relationship

Explanation:a parasite is an organism that lives in or on another organism reffered to as the host,it benefits from the host and causes harm to the host.

The roundworm gets food from the host and causes ascaris in the host

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

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