Home⇒ Medical Science⇒ Biochemistry⇒ Genetic code and regulation
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes? RNA can both code genetic information and act as a catalyst [other wrong options] [Discuss in forum] |
| Q2 ⇒ In protein synthesis in prokaryotes the initiating amino acid is N- formyl methionine [other wrong options] [Discuss in forum] |
| Q3 ⇒ Bacterial protein called catabolic activator protein (CAP) is an example of second type of positive control of gene expression [other wrong options] [Discuss in forum] |
| Q4 ⇒ 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? Frameshift mutagenesis [other wrong options] [Discuss in forum] |
| Q5 ⇒ The sequence of one strand of DNA is: 5' ATTGCCA 3', what is the sequence of the other strand? 5' TGGCAAT 3' [other wrong options] [Discuss in forum] |
| Q6 ⇒ AUG codes for methionine act as a initiation code [other wrong options] [Discuss in forum] |
| Q7 ⇒ The codons which do not specify an amino acid are called termination code [other wrong options] [Discuss in forum] |
| Q8 ⇒ The genetic code is universal except for rare exceptions in mitochondria and some protozoa [other wrong options] [Discuss in forum] |
| Q9 ⇒ How many amino acids will be encoded by 5' GAU GGU UGA UGU 3' sequence? Two [other wrong options] [Discuss in forum] |
| Q10 ⇒ In some organelles in eukaryotes, the genetic code for some codons differs from that used in prokaryotes [other wrong options] [Discuss in forum] |
| Q11 ⇒ How many different codons are possible? 64 [other wrong options] [Discuss in forum] |
| Q12 ⇒ In prokaryotes, AUG encodes N-formyl methionine [other wrong options] [Discuss in forum] |
| Q13 ⇒ Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon? In vitro synthesis of a polypeptide using UUUUU [other wrong options] [Discuss in forum] |
| Q14 ⇒ The genetic code is degenerated. Which of the following codons represents the principle of degeneracy? CAU and CAC [other wrong options] [Discuss in forum] |
| Q15 ⇒ Codon that specify the amino acids often differs in the third base [other wrong options] [Discuss in forum] |
| Q16 ⇒ Translation begins at the start codon [other wrong options] [Discuss in forum] |