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- 1. Multiple Choice
What best describes the genetic material shown in photograph B.The chromosomes are in anaphaseThe chromosomes are in metaphaseDNA is possibly being replicatedThe genetic material is around the poles and cytokinesis is occurring - 2. Multiple ChoiceAll of the following are true of the cell cycle shown in the diagram except ___.A, B, and C represent interphaseDNA is replicated at BCytokinesis and new daughter cells are found at EMitosis and cytokinesis are represented by D
- 3. Multiple ChoiceWhich of the following are true of the cell cycle?The cell spends most of its time dividingThe cell spends most of its time growingReplication of DNA occurs at MCells enter G0 after M
- 4. Multiple ChoiceWhen is DNA replicated during the cell cycle?During the G1 phaseDuring the G2 phaseDuring the S phaseDuring the M phase
- 5. Multiple ChoiceWhat best describes the genetic material shown in photograph E.The chromosomes are in anaphaseThe chromosomes are in metaphaseDNA is possibly being replicatedThe genetic material is around the poles and cytokinesis is occurring
- 6. Multiple ChoiceIn DNA replication, complementary base pairing occurs between ___.Cytosine and uracilAdenine and guanineAdenine and uracilAdenine and thymine
- 7. Multiple ChoiceWhat best describes the genetic material shown in photograph A.The chromosomes are in anaphaseThe chromosomes are in metaphaseDNA is possibly being replicatedThe genetic material is around the poles and cytokinesis is occurring
- 8. Multiple ChoiceAll of the following are true about DNA replication except ___.It is semiconservativeIt occurs during the S-phase of the cell cycleIt allows daughter cells to have exact copies of the genetic codeIt reduces the chromosome number by half for the production of gametes
- 9. Multiple ChoiceReplication of DNAProduces mRNA and tRNA moleculesProduces only new DNAProduces two molecules, each of which is half new and half old DNA joined lengthwise to each otherGenerates excessive DNA, which eventually causes the nucleus to divide
- 10. Multiple ChoiceDNA polymeraseIs an enzymeAdds new nucleotides to the template strandProofreads DNA strands to see that they are correctAll of these are functions of DNA polymerase
- 11. Multiple ChoiceIn DNA replication, three of the four choices listed below are correctly paired. Select the exception. A. A – C B. C – G C. A – T D. T – AA-CC-GA-TT-A
- 12. Multiple ChoiceIdentify this process.ReplicationTranscriptionTranslationProof reading
- 13. Multiple ChoiceWhen, during the cell cycle, does this occur?During G1During SDuring G2During M
- 14. Multiple Choice. In step b, the original strands have separated because ___.DNA polymerase has stopped functioningHydrogen bonds between the bases have brokenWater hydrolyzes the bases into their subunitsBases naturally repel each other
- 15. Multiple ChoiceWhen step d is completed, the two DNA molecules formed will be ___.Identical to each other but not to the parentIdentical to the parent but not to each otherIdentical to each other and to the parentDifferent from each other and from the parent
- 16. Multiple ChoiceThe ability of the genetic material to ___ provides the genetic variability required for evolution to occur in a population.Store informationBe replicatedUndergo changesAll are correct
- 17. Multiple ChoiceWhich is a characteristic of cancer?rapid and uncontrolled cell growthcell growth delayed at the G1 checkpoint.cell growth delayed at the G2 checkpoint.damage to a cell’s cytoplasm
- 18. Multiple ChoiceWhy do cancer cells not respond properly to cell signals and controls?damage to a cell’s cytoplasmdamage to a cell’s sister chromatidsdamage to a cell’s DNAdamage to a cell’s wall and membrane
- 19. Multiple Choice. Cancer is a disorder in which some cells have lost the ability to control their ___.sizespindle fibersgrowth ratesurface size
- 20. Multiple ChoiceWhich of the cells depicted in the line graph are most likely cancerous?
Line ALine BLine CLine D - 21. Multiple ChoiceThe genetic code is nearly universal. That means, with few exceptions, the same codons code for the same amino acids in all organisms. What does the near universality of the genetic code suggest?All life-forms can reproduce with one anotherAll life-forms have the same number of genes.All life-forms have a common evolutionary ancestor.All life-forms arose about the same time in Earth’s history.
- 22. Multiple ChoiceThe intersection of the left, top, and right nitrogenous bases indicates which amino acid a mRNA codon represents. This is true for all organisms. This indicates that the ___.The genetic code is universal.We, as organisms, differ only in our sequence of basesThe genetic code determines the sequence of amino acids making up a proteinAll of the above
- 23. Multiple ChoiceWhat do all of these organisms have in common?Universal genetic codeComponents that make up the genetic codeTraits that are determined by genes that are translated into proteinsOrganisms have all of above in common
- 24. Multiple ChoiceOrganisms have all of the following in common except ___.Traits that are determined by genes that are translated into proteinsSequence of nitrogenous bases in the genetic codeA universal genetic codeThe same components that make up the genetic code
- 25. Multiple ChoiceWhich sequence depicts the correct order of protein synthesis within a cell?DNA → mRNA → amino acids → proteinsDNA → amino acids → mRNA → proteinsDNA → mRNA → proteins → amino acidsDNA → proteins → amino acids → mRNA
- 26. Multiple ChoiceThe figures show four process involving DNA and RNA. Which figure shows the process of transcription?Figure AFigure BFigure CFigure D
- 27. Multiple ChoiceWhich molecule is paired with its correct role in protein synthesis?Nucleus – forms peptide bondsRibosome – carries DNA instructionsmRNA – joins amino acidstRNA – transfers amino acids
- 28. Multiple ChoiceWhich best describes the interaction between DNA and RNA during protein synthesis?RNA carries the code to the nucleus where DNA translates the code into a proteinDNA travels to the ribosome where RNA translates the code into a proteinRNA carries the code from DNA in the nucleus to the ribosome for protein synthesisDNA travels to the cytoplasm while RNA remains in the nucleus
- 29. Multiple ChoiceDuring the process of protein synthesis, a section of the DNA molecule is copied into which other molecule?nucleic DNAcytoplasmic DNAmessenger RNAtransfer RNA
- 30. Multiple ChoiceWhich molecule carries amino acids to the ribosomes?mRNAtRNADNAATP
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