Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 3, Problem 11RA
Summary Introduction
To determine:
Features about rRNA.
Introduction:
rRNA (Ribosomal Ribonucleic Acid) is the RNA component of the ribosome. It is important for protein synthesis in all organisms. rRNA is responsible for reading the frame of amino acids and links amino acids together.
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The anticodons are located in a.tRNA. b.rRNA. c.mRNA. d.ribosomes. e.endoplasmic reticulum.
Which of the following statements about the nucleolus is not true? a. The nucleolus is a membrane-bound structure. b. rRNA genes are transcribed in the nucleolus. c. Ribosomal subunits are synthesized in the nucleolus. d. rRNA molecules are chemically modified in the nucleolus.
All of the following regarding ribosomes are true EXCEPT:
A. Ribosomes are comprised of protein and RNA.
B. Ribosomes coordinate with initiation and elongation factors to regulate translation.
C. Ribosomes bind transcripts in their promoters.
D. Prokaryotic ribosomes are comprised of a large and a small subunit.
E. Ribosomes in eukaryotic cells bind to complete transcripts.
Chapter 3 Solutions
Human Physiology
Ch. 3 - According to the fluid-mosaic model of the plasma...Ch. 3 - After the DNA molecule has replicated itself, the...Ch. 3 - Nerve and skeletal muscle cells in the adult,...Ch. 3 - Prob. 4RACh. 3 - The phase of mitosis in which the chromatids...Ch. 3 - Prob. 6RACh. 3 - Which of these statements about RNA is true?...Ch. 3 - Prob. 8RACh. 3 - Prob. 9RACh. 3 - Prob. 10RA
Ch. 3 - Prob. 11RACh. 3 - Which of these statements about tRNA is true?...Ch. 3 - The step in protein synthesis during which tRNA,...Ch. 3 - Prob. 14RACh. 3 - Prob. 15RACh. 3 - Prob. 16RACh. 3 - Give some specific examples that illustrate the...Ch. 3 - Describe the structure of nucleosomes, and explain...Ch. 3 - What is the genetic code, and how does it affect...Ch. 3 - Why may tRNA be considered the "interpreter" of...Ch. 3 - Prob. 21RACh. 3 - Define the terms genome and proteome, and explain...Ch. 3 - Prob. 23RACh. 3 - Explain the functions of centrioles in nondividing...Ch. 3 - Prob. 25RACh. 3 - Prob. 26RACh. 3 - Define apoptosis and explain the physiological...Ch. 3 - Describe what is meant by epigenetic inheritance,...Ch. 3 - Discuss the role of chromatin proteins in...Ch. 3 - Explain how p53 functions as a tumor suppressor...Ch. 3 - Prob. 31RACh. 3 - Antibiotics can have different mechanisms of...Ch. 3 - Explain how it is possible for the human proteome...Ch. 3 - Explain RNA interference RNAi by siRNA and miRNA...Ch. 3 - Describe the function and significance of...Ch. 3 - Prob. 36RACh. 3 - Review figure 3.19 and answer the following...Ch. 3 - Prob. 38RACh. 3 - Describe the structure of the plasma membrane.Ch. 3 - Describe the structure and function of cilia,...Ch. 3 - Prob. 2aCPCh. 3 - Prob. 2bCPCh. 3 - Prob. 3aCPCh. 3 - Prob. 3bCPCh. 3 - Describe the structure and functions of...Ch. 3 - Prob. 3dCPCh. 3 - Describe the structure and function of ribosomes.Ch. 3 - Distinguish the two types of endoplasmic reticulum...Ch. 3 - Describe the appearance and composition of...Ch. 3 - Explain how RNA is produced within the nucleus...Ch. 3 - Explain how precursor mRNA is modified to produce...Ch. 3 - Explain how mRNA. rRNA, and tRNA function during...Ch. 3 - Describe the rough endoplasmic reticulum, and...Ch. 3 - Describe post-translational changes and other...Ch. 3 - Draw a simple diagram of the semiconservative...Ch. 3 - Describe the cell cycle using the proper symbols...Ch. 3 - Prob. 10bCPCh. 3 - List the phases of mitosis and briefly describe...Ch. 3 - Distinguish between mitosis and meiosis, describe...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following BEST describes the characteristics and function of siRNA? A. a short strand of RNA that can complement and inactivate a sequence of mRNA B. a short strand of RNA that can act as a transcription factor to initiate transcription C. a strand of DNA that can bind to and inactivate an mRNA sequence D. a tRNA that is not able to attach to a ribosome and therefore inhibits the process of translationarrow_forwardWhich of the following statements about the spliceosome is false? a. A spliceosome splices pre-mRNA molecules. b. A spliceosome removes exons from RNA molecules. c. A spliceosome is composed of snRNPs. d. A spliceosome recognizes the exon-intron boundaries and the branch site.arrow_forwardIndicate the phase of protein synthesis during which each of the following processes occurs: a. A ribosomal subunit binds to a messenger RNA. b. The polypeptide is actually synthesized. c. The ribosome moves along the codon sequence. d. The ribosome dissociates into its subunits.arrow_forward
- For each of the following, identify the type of RNA involved (mRNA, rRNA, or tRNA). a. Transports the correct amino acid to the ribosome, using the information encoded in the mRNA. b. Is a major component of ribosomes. c. Specifies the order of amino acids in a protein, using a series of three-base codons, where different amino acids are specified by particular codons. d. Contains a three-base anticodon that pairs with a complementary codon revealed in the mRNA. e. Assists in making the bonds that link amino acids together to make a protein.arrow_forwardWhat site on the ribosome is the place where a tRNA molecule leaves the ribosome after attaching its amino acid to the growing chain of amino acids? a. E site b. P site c. A site d. the small ribosomal subunit Please respond as soon as possiblearrow_forwardEach of the following statements about protein synthesis is false.Correct each to make a true statement. a. In a gene, each nucleotide specifies one amino acid in a protein sequence. b. A transcription factor must bind to the promoter region of a gene before the enzyme DNA synthetase is able to bind and begin transcription. c. The enzyme RNA polymerase builds a strand of transfer RNA, whose codons are complementary to DNA’s triplets. d. Proteins destined for secretion from the cell enter the nucleus after translation, to be folded and modified. e. During translation, amino acids are delivered by the messenger RNA transcriparrow_forward
- Which of the following is true of ribosome rescue? (C & E wrong) A. The process produces a protein that is tagged for degradation. B. Proteases enter the A-site of the ribosome to degrade the C-terminus of the synthesized peptide. C. A partially translated mRNA becomes fully degraded before it can be translated further. D. No protein is produced in the process. E. Stalled ribosomes are released in the absence of a stop codon.arrow_forwardWhich of the following is true about the three major classes of RNAs in the cell: mRNAs, tRNAs, and rRNAs? A. mRNAs encode polypeptide chains. B. tRNAs are structural components of the ribosome. C. rRNAs are adapter molecules that translate the information on an mRNA into a polypeptide sequence. D. mRNAs can also encode tRNAs and rRNAs.arrow_forwardWhat is the role of ribosomes in protein synthesis? * A. they carry proteins to the site of action B. they provide a source of amino acids C. they provide a site from tRNAs to link to mRNAs D. they translate the basic DNA code using tRNA Consider the following DNA bases sequence 3' TAT CGG 5'. what dipeptide is formed if a DNA point mutation converts CGG to CGT? * A. Val-Ala B. Asp-Glu C. Ala- Ala D. Gly-Ala A tRNA molecule possesses the anticodon 5' CGU 3' , which amino acid will this tRNA molecule carry? * A. Threonine B. Valine C. Alanine D. Arginine What will most likely be the effect of the change in the DNA molecule? * A. the change will cause a harmful mutation B. the DNA molecule will be unable to replicate…arrow_forward
- tRNAs a. carry amino acids b. bind to the anticodon present in the mRNA c. adapt the genetic information to the ribosome d. catalyze the peptide bondarrow_forwardA release factor is referred to as a “molecular mimic” because its structure is similar to a. a ribosome. b. an mRNA. c. a tRNA. d. an elongation factor.arrow_forwardThe “A” site in the ribosome refers to the: A. binding site for charged t-RNA molecules during protein synthesis B. Site that allows for tRNAs to exit C. a site that holds the tRNA which is linked to the growing polypeptide chain D. none of these answeresarrow_forward
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