Can you match terms related to operons to their definitions? drag the terms on the left to the appropriate blanks on the right to complete the sentences.

1. a(n) is a stretch of dna consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.
2. the is/are arranged sequentially after the promoter.
3. a(n) is a specific nucleotide sequence in dna that binds rna polymerase, positioning it to start transcribing rna at the appropriate place.

1. A(n) operonis a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.

2. The genes of an operon is/are arranged sequentially after the promoter.

3. A(n) promoter is a specific nucleotide sequence in DNA that binds RNA polymerase, positioning it to start transcribing RNA at the appropriate place.

4. A(n) regulatory genecodes for a protein, such as a repressor, that controls the transcription of another gene or group of genes.

5. Regulatory proteins bind to the operator to control expression of the operon.

6. A(n) repressoris a protein that inhibits gene transcription. In prokaryotes, this protein binds to the DNA in or near the promoter.

7. A(n) inducer is a specific small molecule that binds to a bacterial regulatory protein and changes its shape so that it cannot bind to an operator, thus switching an operon on.

Explanation:

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.