A they have only two possible alleles b they are

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a. They have only two possible alleles b. They are dominant c. They have no harmful variants d. They are not unique for our species e . Their DNA codes for structural proteins 19 .The steps of protein synthesis and modification take place in several different locations throughout the cell. What is the proper order of these locations, from start to finish? I. Ribosome II. Nucleus III. Golgi apparatus IV. Endoplasmic reticulum A. I, II, III, IV B. II, I, IV, III C. III, II, IV, I D. II, I, III, IV E. IV, III, II, I 20. Which of the following diseases is most likely caused by a mutation in protein involved in cell cycle regulation? a. Diabetes b. Heart disease c. Malaria d. Cancer e. Sickle cell anemia 21. The nitrogenous base guanine makes up 30% of the bases in the DNA of a certain organism. What percentage of this organism’s bases are composed of adenine? a. 20% d. 50% b. 30% e. 60% c. 40% 22--25 A. DNA B. r RNA C. m RNA D. t RNA E. RNA polymerase 22. The molecule that carries the genetic information from one cell generation to another. a 23. The product of the transcription that determines the sequence of amino acids in a polypeptide chain. C 24. A nucleic acid that bonds temporarily with a specific amino acid during protein synthesis. d 25. The protein that carries out transcription e A B C D 26. If the diagram above represents genes on a chromosome, which genes would have the highest frequency of recombination between them? A. A and B B. A and D C. B and C D. B and D E. The frequencies are the same for all cross overs 27--- 30
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A. Reverse transcriptase B. Retrovirus C. Caspid D. Phage E. Viroid 27. Type of virus that infect bacteria D 28. Protein shell that encloses a viral genome C 29. Used by a type of RNA virus to make DNA from RNA . A 30. Infectious agent that causes AIDS B 31. Watson and Crick model of the DNA molecule proposed that a. Its replication is semiconservative b. its transcription results in production of mRNA. c. Its structure is double helix d. It is non polar e. Its formed of amino acids 32. If a certain protein chain contains 100 amino acids, what is the minimum number of nucleotides that must be present in the DNA that contains the code for that protein? a. 100 b. 200 c. 300 d. 900 e. 1,000 33. Different cells activates a. Different ribosomes b. different genes c. Different DNA d. Different mitochondria e. different centrioles 34. In point (substitution) mutation causing sickle cell anemia a. No amino acid in the protein is changed b. Only one amino acid in the protein is changed c. Three amino acids in the protein are changed d. Two amino acids in the protein are changed e. Four amino acids in the protein are changed 35. Turner’s syndrome (XO) is a chromosomal disorder that can be diagnosed by a. Pedigree analysis b. Biochemical analysis c. Punnett square analysis d. Karyotyping e. Blood type analysis 36. The position of mutation in a gene and the location of an altered amino acid sequence in the corresponding protein are a. not related b. inversely related c. related in bacteria but not in mammals d. species dependent e . in the same relative position 37. In order for an animal that was cloned from
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