Shared Flashcard Set

Details

Introduction to Genetics
Lecture 5
7
Biochemistry
Undergraduate 1
02/27/2012

Additional Biochemistry Flashcards

 


 

Cards

Term

 

Name the three differences

between DNA and RNA.

Definition
  • DNA has a double helix, RNA has a single strand.
  • DNA has a deoxyribose sugar, RNA has a ribose sugar.
  • DNA contains T, RNA contains U.
Term

 

What is RNA known as in the cnetral dogma?

Definition

 

 

The intermediatary molecules.

Term

 

What does rRNA do along

with proteins?

And what is this the site of?

Definition

 

They make ribosomes, the site of polypeptide synthesis. 

Term
  • What are ribosomes composed of?
  • What three sites does a ribosome contain?
  • What are these sites important to?
Definition
  • 2 sub units - a large and a small.
  • "E", "P" and "A"
  • protein synthesis
Term

 

What does tRNA transfer

to the ribosome and

what does it ensure

once there?

Definition

 

Transfers amino acids to the ribosome and ensures it is in it's correct position in the elongated polypeptide chain. 

Term

 

Describe the structure of tRNA.

(2 things)

Definition
  1. It has three hoops. Hoops 1+2 bind to the ribsome, hoop 3 carries the anticodon.
  2. The free 3OH group carries an amino acid. 
Term
  • What does mRNA do? (and..)
  • What does transcribed mRNA do?
Definition
  • Transfers info from DNA to ribosome and uses this to direct protein synthesis.
  • Determines the sequence of the amino acids incorporated in the polypeptide chain.
Supporting users have an ad free experience!