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HOW GENES WORK

HOW GENES WORK - CSCC

QuestionAnswer
The use of information in DNA to direct the production of particular proteins is called gene expression
The coding portions of most eukaryotic genes are embedded as introns with long sequences of non-coding exons. A) True B) False False
The direct result of transcription is mRNA
The direct result of translation is a protein
Which of the following is not associated with transcription? rRNA
Which of the following is not associated with translation? DNA
In the process of translation, the amino acids are arranged to form specific proteins because they are attached to tRNA
A(n) ______________ is composed of 2 subunits, one nested into the other like a fist in the palm of your hand. ribosome
Which of the following functions as the "blueprint" copies of nuclear genes? A) mRNA B) tRNA C) rRNA D) all of the above mRNA
During translation, the mRNA molecule moves between the two subunits of the ribosome
DNA leaves the nucleus never
The genetic code is made up of ____________. mRNA codons
The codon GCU specifies the amino acid alanine. A) True B) False True
____________________ forms hairpin loops due to the hydrogen bonding that forms between its nucleotides with an amino acid attached to it's free -OH end. tRNA
RNA polymerase binds to a strand of DNA and moves along the strand to make mRNA. A) True B) False True
During transcription, both strands of DNA serve as a template for the synthesis of mRNA. A) True B) False False
Each amino acid is specified by a codon. A) True B) False True
Genes can be turned on by the binding of a repressor. A) True B) False False
After transcription, the mRNA molecule must _________________ before it is translated into a protein molecule. have its introns removed
The genetic code is universal. A) True B) False True
Which of the following is not a type of RNA? nRNA (nuclear RNA)
Each amino acid in a protein is specified by a codon
The three-nucleotide codon system can be arranged into _______ combinations 64
The process of obtaining a copy of the information in a gene as a strand of messenger RNA is called transcription
The site where RNA polymerase attaches to the DNA molecule to start the formation of an RNA molecule is called a(n) promoter
The process of taking the information on a strand of messenger RNA and building an amino acid chain that will become all or part of a protein molecule is called translation
If an mRNA codon reads UAC, its complementary anticodon will be AUG
When an mRNA leaves the cell's nucleus, it next becomes associated with a ribosome
Regarding the activity level of genes, some genes are always off unless a repressor is not bound.
Which of the following statements is correct about prokaryotic gene expression? Repressors block transcription by binding to the DNA
Created by: Bonnie870
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