BIOLOGY 1 Marks Question

Write the name of bond between phosphate group and nucleoside in DNA.

Write the type of RNA which brings amino acids and reads the genetic code.

Write the two components of nucleoside.

What is gene gun (biological)? Write one use of it.

List two essential roles of ribosome during translation.

Which property of DNA double helix led Watson and Crick hypothesise semi-conservative mode of DNA replication? Explain.

If the sequence of the coding strand in a transcription unit is written as follows:
5'-ATGCATGCATGCATGCATGCATGCATGC-3'
Write down the sequence of m-RNA

If the sequence of one strand of DNA is written as follows:
5'-ATGCATGCATGCATGCATGCATGCATGC-3'
Write down the sequence of complementary sequence in 5'→3' direction.

Explain (in one or two lines) the function of the followings: Exons

Explain (in one or two lines) the function of the followings: tRNA

Explain (in one or two lines) the function of the followings: Promoter

Group the following as nitrogenous base and nucleosides :
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.

Write the two functions of genetic codon AUG.

Expand the terms BAC and YAC.

Discuss the four essential criteria for a molecule to act as genetic material?

What are Rho-factors?

To which phenomenon are associated okazaki segments?

How many types of t-RNA are found in a cell?

Write the various types of RNA?

Describe the length of DNA helix and number of nitrogen bases in one helix.

What is replisome.

What are monocistronic m-RNA ?

How many types of mRNA exist on the basis of number of cistron?

Which is smallest RNA and how many nucleotide has it?

Expand the term snRNP.

What do you understand by commaless in genetic code.

What is negative regulation?

What are called those segments of a hn-RNA which do not take part in protein synthesis?

Which scientist proposed the Operon concept of gene regulation?

Write the name of enzyme which help in translation.

Write the name of which are excised of by splicing of RNA hnRNA.

Which bond is formed between sugar and phosphoric acid in DNA?

DNA is a genetic material. Who gave clear evidence about it?

If the sequence of one stand of DNA is as follow:
5'-AAGTTACTAGAC-3
Write the sequence of mRNA framed from this DNA.

Write the four characteristics of genetic code.

Which DNA has importance in DNA fingerprinting?

Who is given the credit of development of methodology to determine the sequence of amino acid in proteins?