Exam 21: Dna and Biotechnology

The base sequences that are left behind after the introns have been spliced out by enzymes are the ________.

The process in which the mRNA,tRNA,and ribosomal subunits come together during translation is called ________.

Which of the following is the signal that functions to begin transcription and consists of a sequence on the DNA?

If a mutation occurred in this area,it would not directly change the specific placement of an amino acid in the resulting polypeptide.

Which of the following is a process in translation in which tRNA molecules deliver amino acids in the correct sequence,causing peptide bonds to form and increasing the length of the polypeptide chain?

The process of using each strand of a DNA molecule as a template to form a new strand is called ________.

The gene for one form of hemophilia is added to a harmless virus and then the virus is given to someone with the hereditary disease.The virus is acting as a(n)________.

The nitrogenous base found in RNA but not DNA is ________.

The following is a part of a gene sequence: ATCAGC.What would the resulting product of transcription be?

Match each definition in the first column to the correct term in the second column. -An enzyme that binds with the promoter on DNA and then synthesizes mRNA.

Which process converts the nucleotide language of mRNA into the amino acid language of a protein?

Translation occurs at the ________.

A (n)________ is composed of one sugar (deoxyribose or ribose),one phosphate,and one nitrogenous base.

A group of identical organisms that are all descendants from a single ancestor is known as a(n)________.

Match each definition in the first column to the correct term in the second column. -According to base pairing rules,cytosine will only pair with this.

The process in which a tRNA with a long chain of amino acids is released from the ribosome due to the stop codon not corresponding with a particular anti-codon that causes the t-RNA to fall off,leaving only the polypeptide chain,is called ________.

In which part of the molecule does tRNA pair with mRNA?

Point mutations can occur in any given cell type,but they mostly only affect that one cell and cells produced by it.What cell type,if mutated,would allow the mutation to be passed on to family members for generations?

Which of the following is a method of gene amplification that involves complimentary primers and uses heat to unzip DNA to make multiple copies of a particular gene?

Genetically modified (GM)salmon have now been approved for sale in the United States.What concerns do you think people may have?