Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon? Labeled peptide binding to a ribosome Mixed co-polymer mRNA synthesis In vitro synthesis of a polypeptide using UUUUU None of these TRUE ANSWER : ? YOUR ANSWER : ?
In some organelles in eukaryotes, the genetic code for some codons None of these are same are partially same differs from that used in prokaryotes TRUE ANSWER : ? YOUR ANSWER : ?
In prokaryotes, AUG encodes a stop codon N-formyl methionine methionine alanine TRUE ANSWER : ? YOUR ANSWER : ?
Codon that specify the amino acids often differs in the none of these second base first base third base TRUE ANSWER : ? YOUR ANSWER : ?
The genetic code is species-specific universal universal except for rare exceptions in mitochondria and some protozoa kingdom-specific TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes? DNA and enzymes are only present in the most advanced cells RNA can both code genetic information and act as a catalyst Advanced cells lack RNA All of these TRUE ANSWER : ? YOUR ANSWER : ?
Translation begins at the start codon at the replication fork in nucleus on the lagging strand TRUE ANSWER : ? YOUR ANSWER : ?
Crick demonstrated that the genetic code involved three bases and suggested that the code was degenerated. What experimental technique Crick conducted to suggest genetic code degeneration? Restriction digests of the rII gene Density gradient centrifugation Frameshift mutagenesis Gel electrophoresis TRUE ANSWER : ? YOUR ANSWER : ?
How many amino acids will be encoded by 5' GAU GGU UGA UGU 3' sequence? One Four Two Three TRUE ANSWER : ? YOUR ANSWER : ?
The genetic code is degenerated. Which of the following codons represents the principle of degeneracy? UUA and UUC AUG and AUA UAA and UAC CAU and CAC TRUE ANSWER : ? YOUR ANSWER : ?