aEAaBbCcl AaBbC AaBb Emphasis Heading 1 1 Norm Paragraph c. urac?l 24. DNA is do
ID: 302809 • Letter: A
Question
aEAaBbCcl AaBbC AaBb Emphasis Heading 1 1 Norm Paragraph c. urac?l 24. DNA is double-stranded and contains the base uracil, while RNA is single strane the base thymine. a. true b. false Matching 25-28. Answers may be used more than once. Indicate if the description a. transcription. b· translation. c. replication. 25. 26. 27. 28. 29. Assembly of specific amino acids into a protein. B Production of mRNA. Assembly of nucleotides to form ? identical molecules of DNA Occurs on ribosome. A gene mutation is defined as a change in: a. the structure of the ribosome. b. the nucleotide sequence of RNA. c. the nucleotide sequence of DNA. d. the amino acid sequence of a protein. e. the way a gene is expressed. 30. A gene mutation: doct rove thanN ? molecule 26Explanation / Answer
24. b. false
DNA is double stranded and contains the bases adenine (A), thymine(T), guanine (G) and cytosine(C).
RNA is single stranded and contains the bases adenine, uracil (U), guanine and cytosine.
25. Assembly of amino acids into proteins- b. translation.
This is is the process by which a peptide chain is synthesized and it occurs in cytoplasm on ribosomes.
26. Production of mRNA- a. transcription
Process by which the complementary nucleotides are aligned and mRNA is produced according to the bases on a template DNA. This takes place in the nucleus.
27. Assembly of nucleotides to form identical molecules of DNA is called translation (b).
Each strand of the double helix separates by unwinding and a complementary strand is produced on each strand. Takes place in nucleus.
28. occurs on ribosome - b. translation, protein synthesis.
29. A gene mutation is defined as a change in (c) the nucleotide sequence of DNA.
gene is part of DNA.
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