Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 11MC
The information sequence that determines the nature of a protein is the (a)
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What amino acids do the following sequences code for?(a) AUC (b) GCU (c) CGA (d) AAG
A DNA strand consists of any sequence of four kinds of nucleotides. Suppose there were only 14 different amino acids instead of 20. Which of the following statements would be correct descriptions of the minimal number of nucleotides necessary to create a genetic code?
a) 1
b)2, provided that chain termination does not require a special codon
c) 3, provided that chain termination does require a special codon
d)2, no matter how chain termination is accomplished
e) Both b and c
Distinguish between DNA and RNA on the basis of following:
a) chemically
b) functionally
c) by location in the cell
Chapter 3 Solutions
Anatomy & Physiology (6th Edition)
Ch. 3.1 - Summarize the four key points of the cell theory.Ch. 3.1 - How would you explain the meaning of a generalized...Ch. 3.2 - What basic structure do all cellular membranes...Ch. 3.2 - What is the importance of the glycocalyx in cell...Ch. 3.2 - Prob. 3CYUCh. 3.2 - Phospholipid tails can be saturated or unsaturated...Ch. 3.3 - What is the energy source for all types of...Ch. 3.3 - What determines the direction of any diffusion...Ch. 3.3 - What are the two types of facilitated diffusion...Ch. 3.4 - What happens when the Na+-K+ pump is...
Ch. 3.4 - As a cell grows, its plasma membrane expands. Does...Ch. 3.4 - Prob. 3CYUCh. 3.4 - Which vesicular transport process allows a cell to...Ch. 3.5 - What process establishes the resting membrane...Ch. 3.5 - Is the inside of the plasma membrane negative or...Ch. 3.6 - What term is used to indicate signaling chemicals...Ch. 3.7 - Which organelle is the major site of ATP...Ch. 3.7 - What are three organelles involved in protein...Ch. 3.7 - Compare the functions of lysosomes and...Ch. 3.7 - How are microtubules and microfilaments related...Ch. 3.7 - Prob. 21CYUCh. 3.8 - Prob. 22CYUCh. 3.9 - If a cell ejects or loses its nucleus, what is its...Ch. 3.9 - What is the role of nucleoli?Ch. 3.9 - What is the role of nucleoli?Ch. 3.10 - If one of the DNA strands being replicated reads...Ch. 3.10 - During what phase of the cell cycle is DNA...Ch. 3.10 - What are three events occurring in prophase that...Ch. 3.11 - Codons and anticodons are both three-base...Ch. 3.11 - How do the A, P, and E ribosomal sites differ...Ch. 3.11 - What is the role of DNA in transcription?Ch. 3.12 - What is the importance of ubiquitin in the life of...Ch. 3.12 - Prob. 2CYUCh. 3 - The smallest unit capable of life by itself is (a)...Ch. 3 - Prob. 2MCCh. 3 - Prob. 3MCCh. 3 - The term used to describe the type of solution in...Ch. 3 - Osmosis always involves (a) a selectively...Ch. 3 - Prob. 6MCCh. 3 - Prob. 7MCCh. 3 - The endocytotic process in which a sampling of...Ch. 3 - Prob. 9MCCh. 3 - The nuclear substance composed of histone proteins...Ch. 3 - The information sequence that determines the...Ch. 3 - Mutations may be caused by (a) X rays, (b) certain...Ch. 3 - The phase of mitosis during which centrioles each...Ch. 3 - Final preparations for cell division are made...Ch. 3 - The RNA synthesized on one of the DNA strands is...Ch. 3 - The RNA species that travels from the nucleus to...Ch. 3 - If DNA has a sequence of AAA, then a segment of...Ch. 3 - A nerve cell and a lymphocyte are presumed to...Ch. 3 - Prob. 19MCCh. 3 - Explain why mitosis can be thought of as cellular...Ch. 3 - Contrast the roles of ER-bound ribosomes with...Ch. 3 - Cells lining the trachea have whiplike motile...Ch. 3 - Name the three phases of interphase and describe...Ch. 3 - Comment on the role of the sodium-potassium pump...Ch. 3 - Differentiate between primary and secondary active...Ch. 3 - Cell division typically yields two daughter cells,...
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- Briefly describe the function of the following in protein synthesis: a) rRNA, b) tRNA c) mRNAarrow_forwardwhich statement about genetic code is not true? A) mRNA is read 3 bases at a time, which are called codons. B) There is one initiator codon that codes for an amino acid. C) Each amino acid is coded for by only one codon. D) There are 3 termination codons that do not code for amino acids. E) Each codon is specific for only one amino acid. An anion has an equilibrium potential of -40 mV. What direction are the chemical and electrical forces acting on the anion at the resting membrane potential (-70 mV)? A) Both the chemical and electrical forces are directed out of the cell. B) The chemical force is directed out of the cell and the electrical force is directed into the cell. C) The chemical force is directed into the cell and the electrical force is directed out of the cell. D) There is insufficient information to answer this question. E) Both the chemical and electrical forces are directed into the cell.arrow_forwardDraw the structure of each nucleotide: (a) UMP; (b) dTMP; (c) AMP.arrow_forward
- RNA differs from DNA in that: a) The ribose in RNA nucleotides contains fewer oxygen atoms than does deoxyribose DNA nucleotides. b) It is always single stranded and cannot form base pairs. c) It contains the nucleotide uracil, which pairs with thymine. d) It is single-stranded but can fold into a variety of structures, some of which are double-stranded. e) RNA can only be found in the cytoplasm whereas DNA can only be found in the nucleus.arrow_forward(a) In what important ways do the α helix and β sheet structures differ? (b) How are they similar?arrow_forward3)Which of the following statements are true? Choose all that apply a)There are multiple codons possible for nearly all amino acids b)Each stop codon also codes for an amino acid c)Each tRNA will base pair with only one codon d)The start codon also codes for an amino acid e)Each codon in mRNA codes for exactly one amino acid f)Each codon in tRNA codes for exactly one amino acid g)Each anticodon in tRNA pairs with exactly one codon h)Each tRNA carries exactly one type of amino acidarrow_forward
- If a protein is made up of 1000 amino acids 1) How many nucleotides will its mRNA contain between (and including) the start and stop codon? _____ 2) How many codons will this mRNA contain? _____ 3) How many tRNA molecules will be needed to make that protein? _____arrow_forwardThe sequence of nucleotides found in mRNA is determined by the a) structure of DNA polymerase, b) sequence of amino acids in a protein, c) large complex proteins, d) sequence of nucleotides in a gene, e) fatty acids and glycerol in the cell.arrow_forward……….. proteins do not have a defined secondary structure composition. They can have both helices and sheets. When primary sequence is studied, it does not look like there is any order in the sequence, but there is order in 3D structure. ……… amino acids are clustered in the core of the protein, away from the solvent (water molecules) and …….. amino acids are on the surface of the protein.arrow_forward
- Which statement below about mRNA is true? A)A gene's promoter sequence is transcribed into mRNA. B)Translation begins at the 5′ end of a molecule of mRNA C)mRNA is complementary to the coding strand of DNA. D)Some regions of mRNA are not translated into amino acids.arrow_forwardSelect the best answer or answers from the choices given: The information sequence that determines the nature of a protein is the (a) nucleotide, (b) gene, (c) triplet, (d) codon.arrow_forwardA triplet of bases on an mRNA molecule is known as a(n) A) amino acid. B) anticodon. C) codon. D) ribosome-binding sequence.arrow_forward
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