Bio chapter 17 – Flashcards

Which of the following variations on translocation would be most disadvantageous for a cell

Garrod hypothesized that inborn erros of metabolism such as alkaptonuria occur because

How might PKU affect the presence or absence of alkaptonuria

The nitrogenous base adenine is found in all members of which group

A particular triplet of bases in template strand of DNA is 5 AGT 3, corresponding codon for mRNA is

The genetic code is essentially the same for all, what can be assumed

The universal genetic code is now know to have exceptions, evidence is found if which is true

Which represents a codon

Provides evidence that RNA evolved from DNA

Describes termination of transcription of prok

Does not occur in prok eukaryotic gene express but in euk

Which of the following is most probable advantage of organisms of such sigma switching

Which of following is function of poly a tail

What type of RNA polymerase is involved in transcription of mRNA for globulin protein

Transcription in eukaryotes requires which of following in addition to RNA polymerase

TATA box highly conserved in evolution which of following does it illustrate

TATA sequence is found only several nucleotides away from start site of transcription. Relates to which of the following

Ribozyme

A transcription unit 8000 long use 1200 nucleotides to make a protein of 400 aa this is explained by

During splicing which component of splices me catalyze so excision

Alternative RNA splicing

In structural organization of many eukaryotic genes individual exons may be related to which of the following

Student inserts mRNA in eukaryotic cell after removing 5 cap and Poly a tail, what would he find

Which components of previous molecule will also be found in mRNA in cytosol

When spliceosome binds to element of this structure where does it attach

Which of the following is a useful feature of introns for this model

Suppose exposure to chemical mutagen results in change in sequence that alters 5 end of intron 1 what may occur

Suppose induced mutation removes most of the 5 end of the 5 UTR what may occur

Articulate triplet of bases in coding sequence of DNA is AAA the anticodon on the tRNA that binds the mRNA codon is

Accuracy in the translation f mRNA into primary structure of a poly peptide depends on specificity in the

What is function of GTP in translaton

A mutant bacterial cell has defective aminoacyl sun taste attaches to tRNA with AAA instead of phenylalanine. The consequence is

There a 61 mRNA codons that specify an amino acid but only 45 tRNA

Is first event to take place in translation in eukaryotes

Which is function of signal peptide

When translating secretory of membrane proteins ribosomes are directed to the ER membrane by

An experimenter has altered the 3 end of tRNA corresponding to the amino acid methionine in a way that removes the 3 AC

The process of translation whether in prokaryotes or eukaryotes requires tRNA aa ribosomal subunit and what

When ribosome reaches a stop codon on the mRNA no corresponding tRNA enters the A site if translation reaction was stopped at this point which would be possible to isolate

What is the function of the release factor

When the function of the newly made polypeptide is to be secreted from the cell where it has been made what must occur

Formation of tRNA is mutated attaches to same aa but anticodon loops has sequence AAU binds to UUA

Why might a point mutation in DNA make a difference in the level of protein activity

MUller, why do we test for its ability to induce mutation

Which type of mutation has most serious effect of product

Effect of nonsense mutation in gene

A farm shift mutation could result form

Which Italian is most likely to be damaging to the protein it specifies

Which small scale mutation would most likely have bad effect on function protin

Common occurring mutation in people with CF is deletion of single codon

Which mutation will cause phenotypic change

Which number of exons below is gene likely to have

True about protein synthesis prok

Most current description of gene

Which way is it most like the domain Euk

Which is true of transcription in Arch

Comparing DNA and RNA replication in same cell which is true only of replicaitn

In order for Euk gene to be make into bac colony what must be included in addition to coding exons

When genome includes 20000 protein coding regions what doe it imply

According to Beadle and Tatum how many genes

A mutation results in a defective enzyme A which would be a consequence

If A B C are all required for growth a strain that is mutant for the gen encoding enzyme A would be able to grow on which meia

If A B C are all required for growth a strain mutant for the gene encoding enzyme B would be capable of growing on which media

Possible sequence of nucleotides in template strand of DNA that would code for polypeptide sequence Phe leu ile val

What amino acid sequence will be generated based on 5 AUG UCU UCG UUA UCC UGG 3

Peptide has sequence NH2 Phe pro lys gly Phe pro COOH

DNA template strand 5-3 complementary 3-5, given locally unwound double strand above in which direction does RNA polymerase move

In transcription event of previous DNA where would the promoter be located

The di peptide taht will form will be

The anticodon loop of the first tRNA that will complement this mRNA is

What type of bonding is responsible for the maintaining the shape of tRNA molecule

The figure represents tRNA that recognizes and binds a particular amino acid in the instance phenylalanine which codon on mRNA strand codes for this amino acid

Has its 3 end projecting beyond its 5 end what will occur at 3 end

Add polynucleotide phosphorylase to solution of ATP and GTP how many artifical mRNA 3 nucleotide codons would be possible

Add to solution of ATP GTP UTP how many artificial mRNA 3 nucleotide codons would be possible

Where does tRNA 2 move to after this bonding of lysine to the polypeptide

Which component of the complex described enter the exit tunnel through the large subunit of the ribosmes

In Euk cells transcription cannot begin until

Not true of a codon

The anticodon of a particular tRNA molecule is

Not true of RNA processing

Which component is not directly involved in translation

Which mutation would be most likely to have harmful effect on organism