Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 40.2, Problem 1CC
MAKE CONNECTIONS Ø How does negative feedback in thermoregulation differ from feedback inhibition in an enzyme-catalyzed biosynthetic process (see Figure 8.21)?
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Analyze the fish bone diagram. Identify the specific factors and causes of increased enzymatic activity. Only choose 1 answer per number. You CANNOT repeat the same chosen option to the other numbers.
1-3 SPECIFIC FACTORS (choices are on the first photo)
4-10 CAUSES (choices are on the second photo)
Hypothetical scenerio:
When the membrane potential is 80mV across the digestive vacuoles (DV), inside positive, the Vmax for VF-6-2 efflux is 15pmol/h. However, when the membrane potential is 80mV inside negative, the Vmax of VF-6-2 efflux drops to near zero. Researchers suggest an H+ P-type ATPase is also in the membrane and is required for VF-6-2 efflux.
Do these data support their suggestion? What type of transporter might PfCRT be? How can vanadate be used to potentially test their idea?
Chapter 40 Solutions
Campbell Biology
Ch. 40.1 - What properties do all types of epithelia share?Ch. 40.1 - VISUAL SKILLS Consider the idealized animal in...Ch. 40.1 - WHAT IF? Suppose you are standing at the edge of...Ch. 40.2 - MAKE CONNECTIONS How does negative feedback in...Ch. 40.2 - If you were deciding where to put the thermostat...Ch. 40.2 - Prob. 3CCCh. 40.3 - Prob. 1CCCh. 40.3 - Flowers differ in how much sunlight they absorb....Ch. 40.3 - Prob. 3CCCh. 40.4 - If a mouse and a small lizard of the same mass...
Ch. 40.4 - Prob. 2CCCh. 40.4 - Prob. 3CCCh. 40 - Prob. 40.1CRCh. 40 - Is it accurate to define homeostasis as a constant...Ch. 40 - Given that humans thermoregulate, explain why your...Ch. 40 - Why do small animals breathe more rapidly than...Ch. 40 - Level 1: Knowledge/Comprehension 1. The body...Ch. 40 - Prob. 2TYUCh. 40 - Consider the energy budgets for a human, an...Ch. 40 - Prob. 4TYUCh. 40 - Prob. 5TYUCh. 40 - Prob. 6TYUCh. 40 - Prob. 7TYUCh. 40 - Prob. 8TYUCh. 40 - EVOLUTION CONNECTION In 1847, the German biologist...Ch. 40 - SCIENTIFIC INQUIRY Eastern tent caterpillars...Ch. 40 - SCIENCE. TECHNOLOGY. AND SOCIETY Medical...Ch. 40 - WRITE ABOUT A THEME: ENERGY AND MATTER In a short...Ch. 40 - 13. SYNTHESIZE YOUR KNOWLEDGE These macaques...
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- B) Read the situations below and indicate which of the four methods of enzyme regulation is occurring for each. a) The energy-carrying molecule ATP is made by the enzyme ATP synthase. Muscle cells use a lot of energy and also have higher amounts of the ATP synthase enzyme than many ouier cem types. General mechanism of enzyme regulation: /1 b) Prostaglandins are messenger molecules involved in the inflammatory response, as well as th perception of pain. They are synthesized from polyunsaturated fatty acid substrates by an enzyn called cyclo-oxygenase. "Ibuprofen" is the active ingredient in a variety of anti-inflammatory medications such as Motrin® and Advil®. It reduces pain and swelling by binding to a hydrophobic channel in the active site of cyclo-oxygenase, blocking the polyunsaturated fatty acids from binding to the enzyme, and therefore stopping production of prostaglandins. General mechanism of enzyme regulation: a) In point form, describe the steps by which ATP is produced…arrow_forwardMacmillan Learning Write equations for the hydrolysis of ATP and ADP. Use abbreviations such as ATP for adenosine tripho Feedback represent inorganic phosphate. hydrolysis of ATP: hydrolysis of ADP: Incorrect Incorrect ADP + P. AMP + P₁ O Macmillan Learning Hydrolysis is a reaction in which a large molecule is split into two smaller molecules upon the addition of water, H₂O. Adenosine triphosphate, ATP, has one more inorganic phosphate group than does adenosine diphosphate, ADP. ADP has two phosphate groups, whereas adenosine monophosphate, AMP, has one. Consider whether P; should be placed on the left or the right side of the reaction arrow in each reaction.arrow_forwardCytosol Mitochondrion A. PATHWAY 1. major pathway of ethanol metabolism NAD* NADH + H* NAD* NADH + H* in the liver CH,-CH,-OH ADH + CH,-C=O CH;-C-OH + H-O-H ALDH ETHANOL ACETALDEHYDE АСЕТАТЕ WATER B. PATHWAY 2 microsomal ethanol CYP2E1 oxidizing system (MEOS) NADPH + H* + O2 NADP* + 2H,O Excess alcohol consumption increases the NADH:NAD* ratio in the cytosol of hepatocytes.arrow_forward
- Could you be able to assist?arrow_forward-Inhibitor +Inhibitor [S] (mM) Vη&νβσπ: (μmol/sec). ν0&νβσπ;&νβσπ:(μmol/sec) 0.0001 33 17 0.0005 71 50 0.001 83 67 0.005 96 91 0.01 98 95 What is the TYPE of iinhibitor?arrow_forwardassuming each NADH produces 3 ATP and each fadh2 produces 2 ATP in oxidative phosphorylation (perfect world scenario), how many ATP molecules can one glucose molecule make via cellular respiration under aerobic conditionarrow_forward
- Analyze the fish bone diagram. Identify the specific factors and causes of increased enzymatic activity. Only choose 1 answer per number. You CANNOT repeat the same chosen option to the other numbers. for the answers of 4-10 what are the CAUSESarrow_forwardplease help i'm stuckarrow_forwardSolve this question immediately pleasearrow_forward
- Select all that apply about 02 and CO2. O Both are nonpolar molecules. Both can diffuse passively through cell membranes without the help of proteins. O Both are used in cellular respiration. Both are produced in cellular respiration. O Both are small molecules. O Both are hydrophilic molecules. O Oxygen (02) is a cellular respiration input and CO2 is an output. O Co2 is reduced and Oxygen (02) is the product of oxidation. Both are symmetrical molecules. Oxygen (02) gains electrons and is reduced . CO2 is the product of oxidation.arrow_forwardSkeletal muscle myosin heavy chain is a mechanoenzyme that requires ATP for its function. Other enzymes, such as phosphofructokinase-2, also rely on ATP. How are PFK-2 and myosin Il different in their use of ATP? • View Available Hint(s) Both enzymes use ATP in the exact same way. PFK-2 functions as a kinase, whereas myosin functions as a phosphatase. PFK-2 catalyzes ATP hydrolysis, whereas myosin does not. Myosin catalyzes ATP hydrolysis, whereas PFK-2 does not. PFK-2 binds to ATP or ADP + Pj, whereas myosin undergoes covalent modification via phosphorylation. Submitarrow_forward• During vigorous exercise, alanine can accumulate in skeletal muscle. Explain why this might happen, showing the reaction(s) involved (hand-written reactions only)arrow_forward
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