ExamName___________________________________MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers thequestion.1)1)CRISPR-Cas functions in bacteria to ________.A)replicate viral DNAB)edit genomesC)code for restriction enzymesD)fight viruses2)2)Mechanisms of adaptive immunity include ________.A)blocking phage DNA insertionB)blocking phage adsorptionC)learning from past exposuresD)restriction enzymes3)3)casgenes code for a variety of proteins, including ________.A)lysozymesB)crRNAsC)RNasesD)polysaccharides4)4)Which of the following is the correct order of steps for the CRISPR-Cas mechanism?A)cleavage, target interference, biogenesisB)transcription, cleavage, spacer acquisitionC)spacer acquisition, biogenesis, target interferenceD)target interference, transcription, biogenesis5)5)Type II CRISPR-Cas systems are the most widely used systems because ________.A)they were discovered firstB)they only require a single protein, Cas9C)Streptococcus pyogenesis an important research organismD)they use a nuclease complex6)6)Which of the following is required to efficiently target DNAin vitrousing CRISPER-Cas9?A)target RNAB)native crRNAC)Cas9D)tRNA7)7)Genome editing is based on ________.A)transcribing specific DNA sequences with specific proteinsB)methylating specific DNA sequences with specific proteinsC)acetylating specific DNA sequences with specific nucleasesD)targeting and manipulating specific DNA sequences with specific nucleases8)8)Which of the following is a pathway available to cells to repair double-stranded DNA breaks?A)nonhomologous directed repairB)homologous end-joiningC)nonhomologous end-joiningD)homologous directed end joining1Preview Mode
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