Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/26

Click to flip

26 Cards in this Set

  • Front
  • Back
helicase
enzyme that unwinds the DNA helix ahead of the replication fork
primase
enzyme that synthesizes small fragments of RNA to serve as primers for DNA synthesis during DNA replication
positive strand
the DNA strand that is complimentary to the strand used as a template for RNA syntesis--the one that can be translated to make a protein
negative strand
used as template for RNA synthesis--complement of positive
nucleotide
subunits of RNA and DNA--bound to phosphate molecule
ribose
5-carbon sugar found in RNA
transcription
process of transferring genetic info coded in DNA into messenger RNA
sigma factor
component of RNA polymerase that recognizes the promoter
translation
process by which genetic info in the messenger RNA directs the order of amino acids in protein
transduction
mechanism of gene transfer btw bacteria in which bacterial DNA is transferred inside a phage
bacteriophage
virus that infects bacteria
conjugation
cell to cell contact for gene transfers in bacteria
sex pilus
thin protein appendage required for attachment of one bacterium to another prior to DNA transfer by conjugation
transposon
gene that moves from one DNA molecule to another within the same cell or from one site on a DNA molecule to another site on the same molecule
psychrophile
microorganism that grows best btw 5-15 degrees C
mesophile
bacteria that grows best btw 20-45 degrees C
thermophile
organism that grows best btw 45-70 degrees C
aerobe
organism requires oxygen for growth
obligate anaerobe
cannot multiply if oxygen is present
growth curve
lag phase--log phase--stationary phase--death phase--prolonged decline
Koch's postulate
group of criteria used to determine the cause of an infectious disease by culturing the agent and reproducing disease
expression vectors
vectors that facilitate transcription and translation of cloned DNA
Southern Blot
technique to detect a given nucleotide sequence in DNA fragments that have been separated by gel electrophoresis and transferred to a membrane filter
Northern Blot
procedure that is similar in principle to southern blot, except that it uses a nucleic acid probe to detect seq. of RNA
Western Blot
procedure that uses labeled antibody to detect specific proteins
RFLP
abb. for restriction fragment length polymorphism