Cells copy DNA to make RNA to make proteins. RNA is the messenger. Why use RNA at all? Why not make proteins directly from the DNA? Speculate on reasons for this.
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Cells copy DNA to make RNA to make proteins. RNA is the messenger. Why use RNA at all? Why not make proteins directly from the DNA? Speculate on reasons for this.
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- When DNA is read by RNA synthase, mRNA is made. What is the name of the enzyme that reads DNA and makes more DNA?Which statement BEST DESCRIBES the genetic code? A. There can only be one codon for multiple amino acids. B. There are only 10 different amino acids in proteins. C. More than one codon for a specific amino acid. D. The genetic is misinterpreted to have U instead of T._____________ is a mechanism that removes and replaces individual nucleotides in DNA when bases have been damaged.
- Which is NOT a difference between RNA and DNA? A. RNA contains uracil; DNA usually does not. B. The sugar ring of RNA is more oxidized than that in DNA. C. RNA is usually single-stranded; DNA is double-stranded. D. RNA cannot form helices.Write the sequence of bases in the sense strand of DNA that would result in formation of that fragment of mRNA.Use your genetic code (codon) table to answer this question: A tRNA has the anticodon GCU. Which amino acid is attached to it? A) alanine B) methionine C) arginine D) threonine E) serine
- Explain how the function of RNA differs from the function of DNA.Which statement best describes the manner in which the genetic information is used inside cells? Group of answer choices DNA is converted to RNA, which is then converted to protein. Ribosomes make proteins by randomly linking amino acids together. DNA acts as a messenger. It binds to a ribosome and provides instructions for making protein. Sections of DNA are copied into RNA molecules which serve as the instructions for making proteins.Which event contradicts the central dogma of molecular biology? a. Poly-A polymerase enzymes process mRNA in the nucleus. b. Endonuclease enzymes splice out and repair damaged DNA. c. Scientists use reverse transcriptase enzymes to make DNA from RNA. d. Codons specifying amino acids are degenerate and universal.