Exam 8: Gene Expression and Control

Matching ​Match each term with the most appropriate description. -​a tRNA triplet complementary to a mRNA codon A)​anticodon B)​rRNA C)​codon D)​ribosome E)​genetic code F)​translation termination G)​messenger RNA H)​promoters I)​transcription J)​translation

Ribosome inactivating proteins (RIPs) inhibit protein synthesis by preventing _____.

Proteins that regulate gene expression by directly binding to the DNA are known as _____.​

Identify the type of mutation associated with the following questions and statements. Some answers may be used more than once. -The mutation in the keratin gene in sphynx cats causes a change in the intron-exon splice site and is an example of which type of mutation? A)deletion only B)insertion only C)base-pair substitution D)frameshift mutation

Identify the type of mutation associated with the following questions and statements. Some answers may be used more than once. -What type of mutation is least likely to alter the amino acid sequence? A)deletion only B)insertion only C)base-pair substitution D)frameshift mutation

Why are mutations uncommon in normal cells?

How many different codons in our genetic code specify amino acids?​

Eukaryotic post-transcriptional modifications occur in the _____.​

Ricin is a toxin found in _____.

Which process is responsible for the conversion of DNA information into messenger RNA?​

What does it mean that the genetic code is "highly conserved"?

tRNA differs from other types of RNA because it _____.​

Which type of mutation results in sickle-cell anemia?

Which type of molecule is ricin?​

​Match each term with the most appropriate description. -​guided and catalyzed by RNA polymerases A)​anticodon B)​rRNA C)​codon D)​ribosome E)​genetic code F)​translation termination G)​messenger RNA H)​promoters I)​transcription J)​translation

During transcription, _____.

In prokaryotes, translation takes place in the _____.​

​Match each term with the most appropriate description. -​site at which RNA polymerase binds and initiates transcription A)​anticodon B)​rRNA C)​codon D)​ribosome E)​genetic code F)​translation termination G)​messenger RNA H)​promoters I)​transcription J)​translation

Many ribosome-inactivating proteins are not toxic to humans because _____.​

​Match each term with the most appropriate description. -RNA-directed synthesis of polypeptide chains A)​anticodon B)​rRNA C)​codon D)​ribosome E)​genetic code F)​translation termination G)​messenger RNA H)​promoters I)​transcription J)​translation