Exam 9: How Genes Work

A silent mutation is a mutation where a DNA nucleotide has changed,but the resulting protein is identical to the protein produced before the mutation.Explain why such a mutation is possible.

Which molecules are involved in translation?

In the genetic code,a codon is

During translation,

The process of using an RNA template to make proteins is called ________.

A researcher finds a molecule that is made of nucleotides and has a single amino acid bound to one end.This molecule is most likely ________.

Which of the following is a codon?

Each set of three bases in an mRNA molecule codes for one of 20 specific

What is the sequence of the codon that the transfer RNA shown in the following figure would bind to during translation?

Bacteria and humans use the same DNA components,and both kinds of cells also perform transcription and translation.Which of the following choices is a potentially significant outcome of this shared mechanism?

In humans,the herbicide atrazine helps RNA polymerase bind to the promoter of the gene for the enzyme aromatase.As a result,

The order of the bases in DNA determines the order of the

DNA viruses cause disease when the host cell uses the viral DNA to produce more viruses.The host cell uses the viral DNA to make viral proteins as well as more viral DNA;these are then used to produce more viruses and cause disease.In a eukaryotic cell,the viral DNA is often inserted into the host genome.Explain why viral DNA that stays in the cytoplasm would not cause disease.

MATCHING Identify if the following increase or decrease transcription or translation. -The mRNA molecules are broken down quickly.

Which of the following best describes the function of genes?

If a molecule of mRNA is a sentence,its bases are the letters and the codons are the ________.

Use the following chart to determine the chain of amino acids that would be produced by the sequence of this very short,complete gene: UAUUAUGCCUGAGUGAAUUGCUA.

A tRNA with the anticodon GGG would have the amino acid ________ bound to it.

Which of the following is true about gene regulation in cells?

The information in a gene is encoded by the