Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 21, Problem 6SQ
Summary Introduction
Introduction: Anticodons are a set of 3
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Which of the following enzymes adds a new amino acid to the growing chain of a protein during protein synthesis?
a.
aminoacyl-tRNA synthetase
b.
peptidyl synthetase
c.
peptidyl transferase
d.
ribosomal synthetase
________ are encoded by a nucleotide triplet codon.
a.
Amino acids
b.
Chromosomes
c.
RNA strands
A particular triplet of bases in the anticodon strand of the tRNA is 5' - AGU - 3'.
A. The corresponding codon for the mRNA is _________ (write 5’ --> 3).
B. If this codon is translated, the codon specifies the addition of which amino acid? _______________________
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- The AUC and AUA codons in mRNA both specify isoleucine. What feature of the genetic code explains this? a. complementarity b. nonsense codons c. universality d. degeneracyarrow_forwardIf a tRNA has an anticodon with the sequence 5′-CAG-3′, which amino acid does it carry? a. Aspartic acid c. Leucine b. Valine d. Glutaminearrow_forwardEach combinations of nitrogen bases on the mRNA molecule is a codon, which is a three letter code for a specific amino acid. The table shows the mRNA codon for each amino acid. Use the genetic code table to answer the questions. 4. The codon for tryptophan is? 5. For leucine, there are __ different options. 6.The codon GAU is for ____7. In a stop codon, if the second base is G, the first and third bases are __ and __arrow_forward
- Anticodons pair with_____ . a. mRNA codons c. RNA anticodons b. DNA codons d. amino acidsarrow_forwardA genetic code in which two bases encode a single amino acid is not adequate for protein synthesis. Give a reason why.arrow_forwardWhich of the following amino acid is acetylated when DNA is unwound from histones? a. Asparagine b. Lysine c. Arginine d. Glycinearrow_forward
- Complete the phrases with the correct word or words. The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives. a. methionine b. ribosome c. codon d. AUG e. UAC The mRNA moves out of the nucleus and attaches to a The first codon of an mRNA molecule is always As soon as the first codon is in place, a tRNA molecule arrives with the anti-codon The first tRNA to arrive always carries the amino acid called, The ribosome scoots along the mRNA to read the nextarrow_forwardProkaryotic transcripts are _____________ since several proteins can be produced from one mRNA. a. polycistronic b. monocistronic c. tricistronic d. bicistronicarrow_forwardAn enzyme known as ___________________ attaches an amino acid to the_________________ of a tRNA, thereby producing_______________ . a. aminoacyl-tRNA synthetase, anticodon, a charged tRNA b. aminoacyl-tRNA synthetase, 3′ single-stranded region of the acceptor stem, a charged tRNA c. polynucleotide phosphorylase, anticodon, a charged tRNA d. polynucleotide phosphorylase, anticodon, an aminoacyl-tRNAarrow_forward
- The portion in the tRNA that is complementary with the mRNA when the aminoacyl-tRNA reaches the A site of the ribosome is the ____________. (No points for incorrect spelling)arrow_forwardThrough wobble, a single ____________________ can pair with more than one ____________________. a. codon, anticodon b. group of three nucleotides in DNA, codon in mRNA c. tRNA, amino acid d. anticodon, codonarrow_forwardWhich of the following describes the interactions between a codon and an anticodon? A. A codon and an anticodon become covalently bonded together due to the activity of the ribosome. B. A codon and anticodon do not come into direct contact because codons are in the nucleus but anticodons are in the cytoplasm. C. A codon and anticodon are attracted to each other due to hydrogen bonding. D. A codon and an anticodon are linked together by an amino acid. ..arrow_forward
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