Essential Cell Biology :From DNA to Protein
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | Genetic information flows from DNA to RNA to protein.
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| show | T
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| show | U
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| show | it is single stranded.
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| 5) All of the RNA in a cell is made by what process? | show 🗑
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| 6) What determines the nucleotide sequence of an RNA strand? | show 🗑
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| show | Phosphodiester
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| 8) An RNA chain elongates in what direction? | show 🗑
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| show | The hydrolysis of high-energy bonds of ribonucleoside triphosphates during elongation
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| show | True
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| 11) Compared to the error rate of DNA polymerase, the error of RNA polymerase is? | show 🗑
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| show | True
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| 13) To begin transcription, RNA polymerase recognizes nucleotide sequences in what region of the DNA? | show 🗑
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| 14) At which site on the DNA of a gene does RNA polymerase release its newly made RNA? | show 🗑
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| 15) What is the name of the subunit of bacterial RNA polymerase that recognizes the promoter of a gene? | show 🗑
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| 16) In eukaryotes, what must assemble at a promoter before RNA polymerase can transcribe a gene? | show 🗑
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| show | The TATA box
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| 18) Bacterial mRNAs? | show 🗑
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| show | are translated after they are exported from the nucleus.
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| 20) Which of the following does not increase the stability of eukaryotic mRNAs? | show 🗑
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| 21) In bacteria, most protein-coding genes lack introns. True or False? | show 🗑
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| show | RNA splicing in the nucleus.
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| 23) In eukaryotes, which parts of a gene are transcribed into RNA? | show 🗑
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| show | True
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| 25) What structure is responsible for selecting and transporting only properly processed eukaryotic mRNAs into the cytoplasm? | show 🗑
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| show | False
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| 27) Which of the following is well accepted in the scientific community? | show 🗑
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| show | False
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| show | 3
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| 30) In principle, how many reading frames in RNA can potentially be translated into proteins? | show 🗑
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| 31) What is not true about codons in mRNA molecules? | show 🗑
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| show | aaminoacyl-tRNA synthetase.
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| show | ribosomes
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| 34) Within the ribosome, the formation of peptide bonds is catalyzed by? | show 🗑
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| show | Ribozyme
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| 36) At which end of an mRNA molecule do ribosomal subunits first bind? | show 🗑
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| 37) The translation of an mRNA begins at which start codon? | show 🗑
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| 38) In eukaryotes, the initiator tRNA always carries which amino acid? | show 🗑
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| show | The N-terminus
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| show | P site
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| show | A site
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| show | False
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| show | A cluster of ribosomes translating the same mRNA at different sites along the mRNA
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| 44) How do proteases act? | show 🗑
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| 45) Where in a cell are most damaged proteins broken? | show 🗑
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| show | Ubiquitin
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| 47) Which type of molecule has the potential to perform the catalytic action of reproducing itself? | show 🗑
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| show | Peptide bond formation in protein synthesis
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| 49) Which sugar cannot be readily made? | show 🗑
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