UNIT 6 TEST

1. Which of the following is NOT true for DNA?A. made of repeating subunits called nucleotidesB. contains codes for your genesC. contains adenine, thymine, guanine and cytosineD. regenerates itself right after a cell divides into new cells

2. DNA is composed of monomers. The monomer has 3 parts. One of the 3 parts is a nitrogen base. Which of the following answers below are the correct nitrogen bases for DNA?A. Adenine, Thymine, Guanine, and CytosineB. Adenine, Uracil, Guanine, and CytosineC. Adenine, Phosphate, Sugar, DeoxyriboseD. Adenine, Guanine, Carbohydrate, Nucleotide

3. The diagram represents DNA Replication. What is the last step of DNA replication?

A. The two deoxyribonucleic acid strands unwind and unzip with the help of DNA helicase.B. Two identical strands of DNA are formed and they will separate from each other.C. DNA polymerase checks the two DNA strands for

mistakes.D. New nucleotides pair with the separated strands.

4. Identify the process illustrated in the diagram.A. glycolysisB. facilitated diffusionC. DNA replicationD. protein synthesis

5. Refer to the diagram in question 4. What is the purpose of this process?A. to create polypeptides and eventually proteins for gene expressionB. to copy original DNA strands into complementary strandsC. to generate and release energy producing compounds (ATP)D. to regulate the internal environment of the cell

6. Refer to the chart. The triplet codes found in this chart apply to _____________.A. humans onlyB. plants and animalsC. prokaryotesD. all living things

7. What determines the traits of an organism?A. relation of AT to CG base pairsB. number of nitrogen bases in RNAC. presence of ribose or deoxyribose in a nucleic acidD. sequence of nitrogen bases in DNA

8. A linear code of 3 sequential bases on one side of a DNA molecule is a ________.A. base pairB. codonC. amino acidD. gene

9. What is the diagram above demonstrating?A. Kreb CycleB. Cellular RespirationC. PhotosynthesisD. Translation

10. The process of converting food energy into chemical energy takes place in which of the following cell organelles?A. RibosomeB. Endoplasmic ReticulumC. MitochondriaD. Cytoplasm

11. What are the reactants in cellular respiration?A. Carbon dioxide and glucoseB. Carbon dioxide and oxygenC. Oxygen and carbon dioxideD. Oxygen and glucose

12. Which of the cycles in cellular respiration produces the greatest amount of energy?A. Electron transport chainB. Kreb cycleC. GlycolysisD. Fermentation

13. The diagram above demonstrates?A. Eukaryotic cell – aerobicB. Eukaryotic cell - anaerobicC. Prokaryotic cell – aerobicD. Prokaryotic cell – anaerobic

14. All organisms on earth are composed of Deoxyribonucleic Acid (DNA). DNA is composed of a monomer. This monomer is made of 3 parts. What are the 3 parts of DNA’s monomer?A. Protein, Lipid, CarbohydrateB. Protein, Lipid, SugarC. Phosphate, Ribose, Nitrogen BaseD. Phosphate, Deoxyribose, Nitrogen Base

15. Unlike DNA, RNA contains

OXYGEN

a. Adenine. c. Phosphate groups.b. Uracil. d. Thymine.

16. Which of the following are found in both DNA and RNA?a. ribose, phosphate groups, and adenineb. deoxyribose, phosphate groups, and guaninec. phosphate groups, guanine, and cytosined. phosphate groups, guanine, and thymine

17. Which type(s) of RNA is (are) involved in protein synthesis?a. transfer RNA onlyb. messenger RNA onlyc. ribosomal RNA and transfer RNA onlyd. messenger RNA, ribosomal RNA, and transfer RNA

18. What is produced during transcription?a. RNA molecules c. RNA polymeraseb. DNA molecules d. proteins

A codon chart is shown above 19. Which of these changes to the DNA triplet 3’ GCT 5’ will affect the

protein produced? A. GTT B. TCT C. TCC D. GCA

20. During transcription, an RNA molecule is formeda. That is complementary to both strands of DNA.b. That is identical to part of a single strand of DNA.c. That is double-stranded.d. Inside the nucleus.

A section of a nucleic acid is shown below.

21. The process represented in the diagram produces a molecule that is complementary to the template strand of DNA. What type of molecule is produced?

A. New DNA B. PolypeptideB. Messenger RNA D. Carbohydrate

22. Use the diagram above. Which of the samples (A-F) is the same person?A. A, BB. A, C C. A, DD. None of the samples are the same; therefore none of the samples are the same person

23. Which one of the suspects matches the semen found at the crime scene?A. Suspect #1B. Suspect #2C. Suspect #3D. None of the suspects

24. What is mixed with the DNA to make DNA fragments ready to be placed in the well of the gel.

A. BleachB. Restriction EnzymeC. E. coliD. RNA polymerase

25. Analyzing DNA by gel electrophoresis allows researchers to A. Identify similarities and differences in the genomes of speciesB. Determine if an allele is dominate or recessiveC. Compare phenotypes of different organismsD. Make RNA from DNA

26. What type of mutation is the following Original: ACTACTACTGGGAGT Mutated: ACTACTACTGGAAGTa. inversion c. Deletionb. insertion d. Substitution

27. Which of the following is NEVER a frame shift mutation?a. substitution c. deletionb. insertion

28. A mutation that affects only a single nucleotide is called:a. regional mutation c. site mutationb. point mutation d. frame mutation

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