Question

Table 1B: Protein Synthesis with 2nd DNA Template Strand DNA Codons in the 2nd Template Strand mRNA Sequence (List codons) Amino Acids in the Protein **Use the Genetic Code Chart on page 217 to determine the amino acids that will be placed in the protein Questions: 19. The three letter "code words of DNA and RNA that specify amino acids are called: A. codons B. promoters C. Introns D. anticodons 20. Proteins are composed of building blocks called: A. fatty acids B. nucleotides C. amino acids D. phospholipids 21. Transcription of a gene results in the production of a: A. mRNA molecule. B. polypeptide C. DNA copy D. a gamete D. a tRNA molecule. 22. Translation of mRNA results in the production of a: A. a DNA copy B. protein C. a ribosomal subunit. 23. The proper amino acid is brought into correct position in a protein when the anticodon of binds to a complementary codon. A DNA ... mRNA B. mRNA... TRNA C. tRNA ... mRNA D. ERNA ... rRNA 24. Translation occurs: A. in the nucleus B. at the Golgi C. at a ribosome D. in the mitochondria. 25. are loop-like molecules that bind to amino acids and taxi them to the ribosome where they are linked together to build a polypeptide. A. mRNA B. ERNA C. rRNA D. exons

Answer 1

Ans19)a)Codons

Explaination:The three letter code words of DNA and mRNA that specify amino acids are called codon.

Promoters are the sequences of DNA where RNA polymerase binds and initiate the transcription of a gene.

Introns are the non coding sequences of a gene.

Anticodons are the three letter code of tRNA that are complementary to codon of mRNA.

Ans20)C)Amino acids.

Explaination:Proteins are polymer of amino acids so the building block of proteins are amino acid.

Fatty acid are monomer units of lipids .

Nucleotides are monomer of nucleic acids ie, DNA and RNA

Phosholipids are type of lipids that are consist of 2 hydrophobic  fatty acid tails and a hydrophilic phosphate head.

Ans21)A)mRNA molecule

Explaination:Transcription is the process of synthesis of mRNA in the nucleus using DNA as template.

Translation is the process of synthesis of proteins or polypeptides.

Replication of a gene or DNA sequence to produce DNA copy.

Gametes are produced by the process gametogenesis.

Ans22)B)Protein

Explaination:Translation is the mechanism or process in which coded language of mRNA changes to the actual polypeptide chain. It occurs on ribosome.

Ans23)C)tRNA. ... mRNA.

Explaination:The tRNA contains three unpaired nitrogen bases called anticodon that are complementary to the  triplet codon of mRNA and and function of tRNA is to bringing proper amino acid at correct position during protein synthesis when anticodon on tRNA binds with the complementary  codons on mRNA.

Ans24)c)at the ribosomes.

Explaination: Ribosome is the site of protein synthesis (translation ).

Ans25)b)tRNA

Explaination:tRNA are loop like molecules that bind or link to amino acid and bring or taxi them to the ribosome where they are linked together to bulid a polypeptide.

During protein synthesis the major function of tRNA is to transfer amino acid from cytoplasm to the site of protein synthesis ie, ribosome.