27 Daniel and Becky are in terested in science an the counselor to how the genot

Question

27 Daniel and Becky are in terested in science an the counselor to how the genotype determination was question above The counselor explains that two probes were used in the testing one probe with the ability to bind the dominant, non-lethal allele and another probe with the ability to bind the rece ssive lethal allele Based on this information it was determined that Daniel was a carrier, but Becky was not because both probes were able to complement her DNA. only the recessive allele probe was able to complement her DNA c. only the dominant allele probe was able to complement her DNA. d. neither probe was able to complement her DNA. 28. What do host cells provide for viruses? a. nucleotides b. amino acids ribosomes all of the above 29. What is the function of reverse transcriptase in retroviruses? a. Degrades the host cell's viral RNA as a template for DNA synthesis c Converts host cell RNA into viral DNA d. Uses viral RNA as a template for making complementary RNA strands e. Translates viral RNA into proteins 30. The role of RNA dependent RNA polymerase is to a. utilize RNA as a template to make complementary DNA. RNA. b. RNA a template to make non-complementary DNA c. utilize as a template to make on-complementary d. utilize RNA as a template to make complementary RNA the best explanation for why new HIV viruses arise? 31. What is a. Reverse transcriptase makes lots of errors it does not b. RNA dependent polymerase makes lots of errors it does not correct RNA c. correct. polymerase makes lots of errors it does not DNA dependent RNA correct. New strains of influenza arise each year. Which provides the best explanation for why this occurs? 32 a. Nonsense mutations result in amino acid substitutions within b. viral envelope proteins. substitutions within mutations result in amino acid viral envelope proteins substitutions within c. silent mutations result in amino acid viral envelope proteins.

Explanation / Answer

28 Ans. All of the above

Without a host cell, viruses cannot reproduce. Viruses cannot synthesize proteins, as they lack ribosomes so they use ribosomes of their host cells to translate viral messenger RNA into viral proteins. In the similar manner Viruses cannot generate or store energy in the form of adenosine triphosphate (ATP), but they derive their energy, from the host cell. They also depend on host cell for enzymes, ribosomes, tRNAs, amino acids, ATP, etc.,

29. It uses viral RNA as a template for DNA synthesis.

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