Question types

Start with

Question limit

of 69 available terms

Advertisement Upgrade to remove ads
Print test

5 Written questions

5 Matching questions

  1. major genomic functions of eukaryotic cells
  2. initiation of protein synthesis
  3. polyribosome
  4. ribosomal binding sites
  5. structure of tRNA
  1. a 1: bring ribosomal subunit to initiation codon(codon AUG near 5' end of mRNA)
    2: bring 1st aa tRNA into ribosome (methionine-tRNA enters P site ;binds to AUG codon and IF2 )
    -IF3 and IF1 released
    3: assemble complete initiation complex(large subunit joins complex; IF2 hydrolyzed through GTP hydrolysis, releasing IF2-GDP)
  2. b -has a primary, secondary (cloverleaf) and tertiary(L-shaped) structyre
    -bulk of it is double stranded bc of distal complementary base(nucleotide) pairs
    -unique anticodons to complement mRNA(5' end of each) and amino acid(3'-adenine by aaRS)
  3. c A (binds aminoacyl tRNA ), P (binds peptidyl-tRNA), E (binds free tRNA before it exits ribosome)
  4. d 1)DNA replication
    3)genes which code for proteins (RNA polymerase II)
  5. e ribosomes transcribing same piece of mRNA creating many copies of same protein
    -5' end codes for N-terminal amino acid
    -3' end codes for C-terminal amino acid

5 Multiple choice questions

  1. chromatin loops are attached to nuclear matrix
  2. - carries amino acids to the ribosome during translation
    - mediates recognition of codon
    -small RNA (74-95 nucleotides)
    -each type of tRNA can attach to only 1 type of amino acid
  3. -5' end of gene.
    -initiates transcription
    -contains assembling complex
  4. initiates DNA replication on both strands by adding RNA primers
    -1 for the leading strand, 1 for each Okazaki fragment
  5. 1: class I release factors enter A site
    2: ester bond linking polypeltide chain to tRNA hydrolyzed and completed polypeptide released
    3:release free tRNA from P site, dissociate mRNA from ribosome, disassemble ribosome into large and small subunit.

5 True/False questions

  1. nucleolar organizer regions (NOR)region of chromosomes where rRNA genes are amplified (>100 copies)


  2. properties specific to eukaryotic DNA replication(4)-replicon organization along chromosomes
    -replication timing during S-phase
    -initiation of DNA replication during S-phase
    -organization of replication sites in cell nucleus


  3. DNA Ligasesunwinds DNA at replication fork with energy from ATP hydrolysis.


  4. DNA helicaseunwinds DNA at replication fork with energy from ATP hydrolysis.


  5. nucleolusfactory for rRNA synthesis and assembly with proteins into pre-ribosomal subunits