CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
3rd Edition
ISBN: 9780135686065
Author: Urry
Publisher: PEARSON
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Chapter 15, Problem 10TYU
FOCUS ON INTERACTIONS
In a short essay (100‒150 words), discuss how the processes shown in Figure 15.2 are examples of feedback mechanisms regulating biological systems in bacterial cells.
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Chapter 15 Solutions
CAMPBELL BIOLOGY IN FOCUS (LL)-W/MOD.MA
Ch. 15.1 - How does binding of the trp corepressor to its...Ch. 15.1 - Describe the binding of RNA polymerase,...Ch. 15.1 - WHAT IF? A certain mutation in E. coli changes the...Ch. 15.2 - Prob. 1CCCh. 15.2 - Compare the roles of general and specific...Ch. 15.2 - Prob. 3CCCh. 15.3 - WHAT IF? Suppose the mRNA being degraded in Figure...Ch. 15.3 - MAKE CONNECTIONS Inactivation of one of the X...Ch. 15.4 - Prob. 1CCCh. 15.4 - WHAT IF? Study the microarray in Figure 15.17. If...
Ch. 15 - If a particular operon encodes enzymes for making...Ch. 15 - The functioning of enhancers is an example of A. a...Ch. 15 - Which of the following is an example of...Ch. 15 - Prob. 4TYUCh. 15 - Prob. 5TYUCh. 15 - Which of the following would not be true of cDNA...Ch. 15 - Prob. 7TYUCh. 15 - SCIENTIFIC INQUIRY Imagine you want to study one...Ch. 15 - FOCUS ON EVOLUTION DNA sequences can act as tape...Ch. 15 - FOCUS ON INTERACTIONS In a short essay (100150...Ch. 15 - Prob. 11TYU
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- Briefly describe the experiment carried out to demonstrate that proteins are capable of lateral movement in cell membranes.arrow_forwardIn the Nernst equation [V = 62 log10 (Co/ Ci)], the term Ci represents: the extracellular concentration of potassium the extracellular concentration of sodium the membrane potential (in millivolts) the intracellular concentration of calcium the intracellular concentration of potassium Which of the following ions must be kept to very low concentrations within the cell cytoplasm in order to allow for enough substrate molecules to synthesize nucleotides and nucleic acids? HCO3- (bicarbonate) Ca2+ (calcium) PO43- (phosphate) Na+ (sodium) K+ (potassium)arrow_forwardA single celled, prokaryote organism has the ability to use the Na+/K+ pump in their cell membrane to move Na+ out of the cell and K+ into the cell. The Na+ /K+ pump is an example of a functional protein because it a) is a Polypeptide presents specific shapes that interact with (binds with) specific molecules, b) uses electrical interactions with these molecules to produce change in its shape or motion. C) interacts with specific molecules based on the fit of the molecule into specific active sites in the protein, d) As a result of the interaction with specific molecules, it can bind with ATP and use the bond energy in the ATP molecule to move the target molecule(s). e) all the answers are true.arrow_forward
- In the lab you will prepare a dye solution to test transmembrane transport into yeast cells. The dye stock solution has a concentration of 5 mM. For your experiment, you want the dye concentration to be at 0.25 mM. You do the dilution with water. Select among the following, which of the following method(s) will give you the correct final concentration of dye? 1) adding 1 ml of stock solution to 19 ml of water. 2) making a 25-fold dilution. 3) adding 100 ml of water to 5 ml of dye stock solution. 4) diluting 3 ml of concentrated dye with water to a final volume of 60 ml. A. All methods are accurate B. only methods 1, 2 and 3 are accurate C. only methods 1, 3 and 4 are accurate D. only methods 1 and 4 are accurate E. only method 3 is accurate F. None of the methods reflect the proper dilution method.(edited) [3:16 PM]arrow_forwardDefine constant regionarrow_forwardPlease don't provide handwriting solutionarrow_forward
- One thousand Ca2+ channels open in the plasma membrane of a cell that is 1000 μm3 in size and has a cytosolic Ca2+ concentration of 100 nM. for how long would the channels need to stay open in order for the cytosolic Ca2+ concentration to rise to 5 μm? There is virtually unlimited Ca2+ available in the outside medium (the extracellular Ca2+ concentration in which most animal cells live is a few millimolar), and each channel passes 106 Ca2+ ions per second.arrow_forwardIn the image below, a cell with inactive protein channels in its cell membrane has been added to a solution that contains 0.5 M glucose and 2.8 M NaCl. The cell contains 1.3 M glucose and 2.0 M NaCl. The cell was placed in a [Select] solution and the cell will The protein channels are then activated. These protein channels ONLY facilitate the transport of large, polar substances until equilibrium of water has been [Select] (nothing else). After the protein channels have been activated, the cell will continue to [Select] reached. 1.3 M Glucose 20 M NaCl 0.5 M Glucose 2.8 M NaClarrow_forwardProtein transfer to a membrane from a developed electrophoretic gel can be performed under which of the following conditions?arrow_forward
- List two similarities and two differences between bacterial and eukaryotic regulatory proteinsarrow_forwardList one difference and one similarity in a regulatory mechanism that is common in both eukaryotic and prokaryotic cells. Also list one regulatory mechanism only found in eukaryotic cells and one regulatory mechanism only found in prokaryotic cells.arrow_forwardThe dimensions of prokaryotic ribosomes are approximately 14 nm by 20 nm. If ribosomes occupy 20% of the volume of a bacterial cell, calculate how many ribosomes are in a typical cell as E. coli. Assume that the shape of a ribosome is approximately that of a cylinder.arrow_forward
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