Human Anatomy (8th Edition)
8th Edition
ISBN: 9780134243818
Author: Elaine N. Marieb, Patricia Brady Wilhelm, Jon B. Mallatt
Publisher: PEARSON
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Chapter 23, Problem 24RQ
Name four structural features that increase the absorptive surface area of the small intestine.
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a) The lux operon is under positive control. Based on this information, does the luxR regulator sequence make a repressor protein or an activator protein?
b) How will binding of this complex affect RNA polymerase? Remember this operon is under positive control.
c) AHL is a signal molecule that V. fisheri makes to communicate with neighboring bacterial cells. This molecule can diffuse outside of the cell and into another bacterial cell in close proximity. This type of communication between bacterial cells is known as quorum sensing. If bacterial cell density is low how will this affect the lux operon? What will happen if the density is high?
1) Given an mRNA with the following sequence, please translate the codons to a chain of amino acids. Use the codon chart below.5’AUG/CCU/GCU/UAC/CGG/GAG/UAA3’
“met-_________-_________-_________-_________-_________”STOP”
2) Assuming the original polypeptide chain below, match each type of point mutation with the polypeptide chain that results.
Original polypeptide: Pro-Thr-Ser-Leu-Leu-His-Asn
A. Missense
B. Silent
C. Nonsense
D. Frameshift
______ Pro-Thr-Ser-STOP
______ Pro-Thr-Ser-Leu-Ile-His-Asn
______ Pro-Thr-Ser-Leu-Leu-His-Asn
_______ Pro-Thr-His-Cys-Tyr-Thr
Chapter 23 Solutions
Human Anatomy (8th Edition)
Ch. 23 - Where in the alimentary canal does propulsion...Ch. 23 - Differentiate the abdominal cavity from the...Ch. 23 - Identify all the mesenteries that connect to each...Ch. 23 - Prob. 4CYUCh. 23 - Name the three sublayers of the mucosa. Which...Ch. 23 - Name the tissue layer of the alimentary canal that...Ch. 23 - Contrast smooth muscle to skeletal muscle, noting...Ch. 23 - What type of epithelium forms the mucosa lining...Ch. 23 - Name the three major salivary glands. What...Ch. 23 - Prob. 10CYU
Ch. 23 - How does the epithelial lining change from the...Ch. 23 - Describe the location of the stomach in reference...Ch. 23 - What do chief cells produce? What do parietal...Ch. 23 - Prob. 14CYUCh. 23 - Name all the parts of the large intestine,...Ch. 23 - Name the structures within the villus that receive...Ch. 23 - Name the vessels and ducts that pass through the...Ch. 23 - Trace the path of blood drained from the digestive...Ch. 23 - Prob. 19CYUCh. 23 - Why is it so important to wash your hands after...Ch. 23 - Which embryonic germ layer forms the epithelium of...Ch. 23 - What blood vessel supplies the structures derived...Ch. 23 - Which of the following organs is secondarily...Ch. 23 - Prob. 2RQCh. 23 - For each organ in the left-hand column, select the...Ch. 23 - Match each of the mesenteries in the key with the...Ch. 23 - Prob. 5RQCh. 23 - Prob. 6RQCh. 23 - Which of the following correctly describe the flow...Ch. 23 - The exocrine glands in the pancreas are (a) simple...Ch. 23 - Prob. 9RQCh. 23 - Which one of the following features is shared by...Ch. 23 - Prob. 11RQCh. 23 - Prob. 12RQCh. 23 - Protein digestion begins (a) in the mouth by...Ch. 23 - The calcified connective tissue that attaches the...Ch. 23 - Prob. 15RQCh. 23 - Prob. 16RQCh. 23 - The salivary gland that contains only serous cells...Ch. 23 - Use the key below to indicate the blood vessel...Ch. 23 - Make a simple drawing of the organs of the...Ch. 23 - Name the layers of the wall of the alimentary...Ch. 23 - (a) Write the dental formulas for both the...Ch. 23 - Bianca went on a trip to the Bahamas during spring...Ch. 23 - (a) Make a rough sketch of the Visceral surface of...Ch. 23 - Name four structural features that increase the...Ch. 23 - (a) List the three major vessels of the portal...Ch. 23 - Of the three major salivary glands, which is the...Ch. 23 - Trace the entire duct systems of the liver and...Ch. 23 - Prob. 28RQCh. 23 - Prob. 29RQCh. 23 - Prob. 30RQCh. 23 - Prob. 31RQCh. 23 - This chapter describes schemes that divided the...Ch. 23 - A 21-year-old man with severe appendicitis did not...Ch. 23 - Duncan, an inquisitive 8-year-old, saw his...Ch. 23 - Eva, a middle-aged attorney, complains of a...Ch. 23 - Prob. 5CRCAQCh. 23 - The janitor who cleaned the anatomy lab had a...Ch. 23 - Explain why cancer chemotherapies that stop the...Ch. 23 - From what embryonic layer (ectoderm, mesoderm, or...Ch. 23 - Name the three major salivary glands. What...Ch. 23 - Rebound tenderness in the lower right quadrant of...
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- Referring to the Standard Genetic Code table, categorize the chemical properties of each of the 24 amino acids that make up the ER Signal Peptide (hydrophobic, hydrophilic, positive charge, or negative charge). What is notable about the chemical properties of the amino acids that make up the ER Signal Peptide? methionine- translation code tra-hyperopic amino acid R Origine eukiauk aicd amino glutamine HYDOICO ACIDS gaac -CHANGED AMINO ACIDarrow_forward1) Given an mRNA with the following sequence, please translate the codons to a chain of amino acids. Use the codon chart below.5’AUG/CCU/GCU/UAC/CGG/GAG/UAA3’ “met-_________-_________-_________-_________-_________”STOP” 2) Assuming the original polypeptide chain below, match each type of point mutation with the polypeptide chain that results. Original polypeptide: Pro-Thr-Ser-Leu-Leu-His-Asn A. Missense B. Silent C. Nonsense D. Frameshift ______ Pro-Thr-Ser-STOP ______ Pro-Thr-Ser-Leu-Ile-His-Asn ______ Pro-Thr-Ser-Leu-Leu-His-Asn _______ Pro-Thr-His-Cys-Tyr-Thrarrow_forwarda) The relationship between the Hawaiian bobtail squid and V. fischeri is symbiotic where both species benefit. What is the benefit to each? b) Why might quorum sensing be beneficial to pathogenic bacteria? c) How might scientists use quorum sensing to treat bacterial infections?arrow_forward
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- a) What differences would you expect to see between the -DNA/+Amp and +DNA/+Amp plates? b) Predict the growth you would expect to see on each of the following plates: – DNA ___________________________________________________________ – DNA/+Amp ______________________________________________________ +DNA/+Amp ______________________________________________________ +DNA/+Amp/+IPTG _________________________________________________arrow_forward1)Which plate did you see purple/pink/blue bacterial cells? Why did you see this growth? Explain your answer in terms of transformation and plasmids? 2) Calculating Transformation Efficiency For the +DNA/+Amp/+IPTG plate, record the following: Number of transformants (colonies): _________________ Nanograms of plasmid DNA added: 50 ng Final recovery volume: 0.50 mL Volume plated: 0.25 mL Transformation efficiency equation: Transformation efficiency = Number of transformants / µg of DNA x Final volume at recovery (mL)/ volume plated (mL) 3) Using the equation above, calculate the transformation efficiency. 4) Describe the success of the transformation efficiency of this demo based on the calculation you did above?arrow_forwardOverview of Transformation Protocol -Prepare competent bacteria for transformation: Treat starter E. coli bacteria with CaCl2and Competent Cell Solution (CCS). Store on ice until transformation procedure. Competent cells are cells that are likely to take up foreign DNA and be transformed. This step increases the likelihood that the E. coli cells will take up the introduced vector and be transformed. -Transformation procedure: Obtain two microcentrifuge tubes containing your competent cells. Label one tube +DNA and one -DNA. Add CaCl2 to both tubes. Add the transformation mix containing the plasmid DNA to the tube labeled +DNA. Do not add any plasmid DNA to the -DNA tube. Incubate both tubes on ice for 10 minutes. Then, place both tubes in a 42\deg C water bath for 45 seconds. Replace the tubes in an ice bucket for 2 minutes. Add recovery broth to both tubes. Incubate both tubes in a 37 C water bath for 5 minutes. Questions: 1) What differences would you expect to see between the…arrow_forward
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