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- 1. Multiple Choice
Which of these is NOT true about DNA?
serves as the genetic material passed from parent to offspring
remains constant despite changes in environmental conditions
provides the instructions for the synthesis of messenger RNA
is read by ribosomes during the process of translation
- 2. Multiple Choice
Which of these represents the central dogma of how genetic information flows in cells?
protein to DNA to RNA
RNA to DNA to protein
DNA to RNA to protein
DNA to protein to RNA
- 3. Multiple Choice
Which enzyme replaces the RNA nucleotides in a primer with DNA nucelotides?
DNA polymerase III
DNA polymerase I
primase
helicase
- 4. Multiple Choice
Which of these is NOT involved in the initiation step of DNA replication?
ligase
DNA gyrase
single-stranded binding protein
primase
- 5. Multiple Choice
During which stage of prokaryotic transcription is the σ subunit of the RNA polymerase involved?
initiation
elongation
termination
splicing
- 6. Multiple Choice
Which of the following is involved in the initiation of transcription?
primer
origin
promoter
start codon
- 7. Multiple Choice
What is the name of the three-base sequence in the mRNA that binds to a tRNA molecule?
P site
codon
CCA binding site
anticodon
- 8. Multiple Choice
Which of the following is the amino acid that appears at the N-terminus (the one that appears first) in all newly translated prokaryotic and eukaryotic polypeptides (proteins)?
tryptophan
methionine
selenocysteine
glycine
- 9. Multiple Choice
What is the smallest unit of heredity (genotype)?chromosomegenecodonnucleotide - 10. Multiple Choice
The DNA of microorganisms is made up of subunits called
nucleotides.
histones.
amino acids.
polymerases.
- 11. Multiple Choice
carries the codon
mRNA
tRNA
rRNA
promoter of the gene
- 12. Multiple Choice
carries the anticodon
tRNA
mRNA
rRNA
promoter of the gene
- 13. Multiple ChoiceA nucleotide contains which of the following?5-carbon sugarnitrogen basephosphateAll of these
- 14. Multiple ChoiceMessenger RNA is formed by ______ of a gene on the DNA template strand.transcriptionreplicationtranslationtransformation
- 15. Multiple Choice
The entire compliment of genes in an organism
Gene
Chromosome
DNA
Genome
- 16. Multiple Choice
What is the function of DNA polymerase?
To break hydrogen bonds
Inserting complementary nucleotides
Creating replication forks
Holding the DNA strand stable during unwinding
- 17. Multiple Choice
A permanent, inheritable change in the genetic information is called
mutation.
translation.
transcription.
alteration.
- 18. Multiple ChoiceWhich of the following sequences of processes correctly reflects the central dogma?protein synthesis, transcription, translationprotein synthesis, translation, transcriptiontranscription, translation, protein synthesistranslation, transcription, protein synthesis
- 19. Multiple ChoiceThe "central dogma" states that genetic information flows fromProtein-->mRNA-->DNAProtein-->DNA-->mRNAmRNA-->DNA-->ProteinDNA-->mRNA-->Protein
- 20. Multiple ChoiceThe nitrogen bases in DNA are bonded to thephosphatedeoxyriboseribosehydrogen
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