Syvum Home Page

Home > Quiz Games > Biology > DNA Molecule >

Structure and chemical composition of DNA


This quiz is based on the physical structure and chemical composition of DNA. It deals with basic concepts related to DNA chemistry and DNA methods.
 

Formats Info Page Worksheet / Test Paper Quiz Review
Multiple choice

Your Performance  

1.

The unit within the nucleus that contains a protein complex (located at the center of the unit) of two H2A, H2B, H3 and H4 histone proteins with DNA wrapped around the complex in two turns, each turn consisting of about 80 base pairs is called a :

  centrosome

  ribosome

  nucleosome

  histosome

  Half-n-half Clue
 

2.

The process of protein manufacture within ribosomes using mRNA is called :

  transcription

  protein derivation

  translation

  None of the above

  Half-n-half Clue
 

3.

A significant difference between prokaryotes and eukaryotes is :

  Prokaryotes do not have ribosomes while eukaryotes do.

  Prokaryote cells are not membrane-bound while eukaryote cells are.

  Prokaryotes do not have DNA as their genetic material while eukaryotes do.

  The DNA of prokaryotes floats freely around the cell while the DNA of eukaryotes is held within its nucleus.

  Half-n-half Clue
 

4.

The single stranded molecule that is transcribed from a DNA template (i.e a photocopy of a specific section of the DNA molecule) and is subsequently used to manufacture proteins is :

  tRNA

  snRNA

  mRNA

  rRNA

  Half-n-half Clue
 

5.

The DNA molecule is a polymer. Its monomer units are :

  nucleic acids

  nucleotides

  amino acids

  nucleosides

  Half-n-half Clue
 

6.

The DNA molecules of different species differ in their :

  phosphate backbone

  sequence of bases

  type of nucleotides

  All of the above

  Half-n-half Clue
 

7.

Melting of DNA is a standard method for preparing "single stranded DNA". A 4000 kb (kilobase- pair) DNA molecule melts at 79oC. What percent of the base pairs are GC pairs?

  42.4 %

  30.4 %

  24.4 %

  2.44 %

  Half-n-half Clue
 


 
5 more pages in Molecular Biology


Contact Info © 1999-2018 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright
Previous
-
Next
-