23 Questions
Which biomolecule is responsible for the storage and expression of genetic information?
Nucleic acids
What are the two types of nucleic acids mentioned in the text?
RNA and DNA
What is the basic structure of a nucleotide according to the text?
Phosphate, sugar, and nitrogen base
Which component makes up the backbone of a polynucleotide chain?
Phosphate
How many hydrogen bonds are there between adenine and thymine in DNA according to the text?
2 hydrogen bonds
What is the rule mentioned in the text regarding the base pairing in DNA?
A-T = C-G
Which type of nucleic acid is right-handed?
B DNA
Given a DNA with 11% C, what is the A %?
39%
What are the nitrogenous bases found in RNA according to the text?
Adenine, Uracil, Guanine, Cytosine
Which component forms phosphodiester bonds in a nucleic acid chain according to the text?
Phosphate
What type of helix is formed by DNA according to the text?
Double helix
During DNA replication, which enzyme is responsible for unwinding the DNA helix?
Topoisomerase
In DNA replication, what is the role of primase?
Initiating the formation of the RNA primer
Which enzyme is involved in the termination of transcription in prokaryotes by recognizing specific DNA sequences?
Rho-dependent termination factor
What is the role of the Shine-Dalgarno sequence in prokaryotic translation?
Promoting ribosomal binding to the mRNA
What is the function of transfer RNA (tRNA) during translation?
Bringing amino acids to the ribosome
What is meant by the term 'degenerate' in relation to the genetic code?
Some amino acids have multiple codons that code for them
What type of mutation results in a change from a purine base to another purine base?
Transition
Which post-translational modification involves the folding of a newly synthesized protein into its correct three-dimensional structure?
Folding
What is the primary function of chaperone proteins in post-translational modifications?
Assisting in protein folding
Which enzyme is responsible for proofreading the newly synthesized DNA during replication and making corrections?
DNA polymerase
What is the role of termination factor Rho in prokaryotic transcription?
Causing dissociation of RNA polymerase from DNA template at specific sequences
During translation, which molecule brings amino acids to the ribosome based on the mRNA codon?
Transfer RNA (tRNA)
This quiz covers the introduction to nucleic acids as biomolecules responsible for the storage and expression of genetic information. It also delves into the structure of nucleotides and the components of nucleotides, including sugar, nitrogenous base, and phosphate groups.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
