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

1/24

Click to flip

24 Cards in this Set

  • Front
  • Back
virus
a package of nucleic acids wrapped in a protein coat
bacteriophage
a virus that infects bacteria
deoxyribonucleic acid (DNA)
a kind of nucleic acid, a polymer built from monomers called nucleotides
nucleotide
building blocks of nucleic acid polymers
nitrogenous base
a single or double ring of carbon and nitrogen atoms with functional groups
pyrimidine
single-ring structures like the bases thymine and cytosine
purine
larger, double-ring structures like the bases adenine and guanine
double helix
two strands of nucleotides wound about each other; structure of DNA
DNA replication
process of copying the DNA molecule
DNA polymerase
Enzymes that make the covalent bonds between the nucleotides of the new DNA strand
ribonucleic acid (RNA)
any nucleic acid whose sugar is ribose rather than the deoxyribose of DNA
transcription
DNA's nucleotide sequence is converted to the form of a single-stranded RNA molecule
translation
process by which a sequence of nucleic acids in RNA is used to direct the production of a chain of specific amino acids
codon
three-base word that codes for one amino acid
messenger RNA (mRNA)
RNA molecule is transcribed from a DNA template
RNA ploymerase
transcription enzyme that links the RNA nucleotides together
intron
internal non-coding region in RNA transcript
exon
coding region in RNA transcript
RNA splicing
process by which the introns are removed from RNA transcripts and the remaining exons are joined together
transfer RNA (tRNA)
RNA that translates the three-letter codons of mRNA to amino acids
anticodons
in tRNA, a triplet of nitrogenous bases that is complementary to a specific codon in mRNA
ribosomal RNA (rRNA)
RNA component of ribosomes
mutation
any change in the nucleotide sequence of DNA
mutagen
physical or chemical agent that causes mutations