Human Anatomy & Physiology
1st Edition
ISBN: 9780805382952
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 2.5, Problem 2AWYL
In Module 2.3, you learned that increasing temperature will also increase reaction rates. Why is there a limit on how high the body’s temperature can be raised?(Hint: What happens to proteins at high temperatures?)
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Students have asked these similar questions
In a lab experiment involving temperature and a glycolytic enzyme isolated from E. coli, you notice
the reaction rate increases as temperature increases until the temperature reaches 50 degrees
Celsius at which time the reaction rate rapidly decreases.
How would you explain the decrease in reaction rate at high temperatures? (best answer)
there is a mistake in your experiment as reaction rates should continue to increase as temperature is increased
at high temperatures, because of the high speed with which the molecules are moving, when they collide with
the enzymes, the enzymes are denatured and thus lose function
at high temperatures, the substrate is destroyed
at high temperatures, there is a great decrease in activation energy for the reaction until there is no more
activation energy remaining
A decrease in blood pH causes the histidine side chain of Hb to become _____ favoring the _____ state and _____ its binding affinity for O2. (select one)
a) Protonated; Tense; decreasing
b) Deprotonated; Relaxed; decreasing
c) Protonated; Tense; increasing
d) Protonated; Relaxed; increasing
e) Deprotonated; Tense; decreasing
f) Deprotonated; Relaxed; increasing
(A) I got the cellulase reaction rate would be the highest in the temp of 60
Chapter 2 Solutions
Human Anatomy & Physiology
Ch. 2.1 - Prob. 1QCCh. 2.1 - What are atoms?Ch. 2.1 - How do the three types of subatomic particles...Ch. 2.1 - What is an element?Ch. 2.1 - 4. How are elements arranged in the periodic...Ch. 2.1 - What are isotopes?Ch. 2.1 - Prob. 1AWYLCh. 2.1 - The element lithium has an atomic number of 3 and...Ch. 2.2 - What is a mixture?Ch. 2.2 - 2. How do the three types of mixtures differ?
Ch. 2.2 - Prob. 3QCCh. 2.2 - What is an ionic bond?Ch. 2.2 - 5. How is an ionic bond formed?
Ch. 2.2 - 6. Explain how polar and nonpolar covalent bonds...Ch. 2.2 - What are hydrogen bonds? Why do hydrogen bonds...Ch. 2.2 - Which would be more reactive-an atom of fluorine...Ch. 2.2 - Would a molecule of hydrogen (H2) form hydrogen...Ch. 2.2 - Explain why the molecule Na2 does not exist in...Ch. 2.3 - Prob. 1QCCh. 2.3 - Prob. 2QCCh. 2.3 - How do endergonic and exergonic reactions differ?Ch. 2.3 - Prob. 4QCCh. 2.3 - What factors can influence the rate of a chemical...Ch. 2.3 - 6. What is an enzyme, and what does an enzyme do?
Ch. 2.3 - Prob. 1AWYLCh. 2.3 - Explain why most biological molecules are stable...Ch. 2.3 - 3. Many naturally occurring poisons function by...Ch. 2.4 - What are four properties of water that make it a...Ch. 2.4 - 2. Which molecules are likely to be hydrophilic?...Ch. 2.4 - 3. Define the terms acid and base.
Ch. 2.4 - What is the pH scale? Which pH values are...Ch. 2.4 - What is the effect of a buffer on a solution?Ch. 2.4 - What is a salt?Ch. 2.4 - 7. What does an electrolyte do in a solution?
Ch. 2.4 - Explain how the water surrounding a fetus in the...Ch. 2.4 - Prob. 2AWYLCh. 2.5 - 1. How do polymers and monomers differ?
Ch. 2.5 - 2.3. How do monosaccharides, disaccharides, and...Ch. 2.5 - 2. How do monosaccharides, disaccharides, and...Ch. 2.5 - How are two monosaccharides linked to form a...Ch. 2.5 - Prob. 5QCCh. 2.5 - 5. How do phospholipids and triglycerides differ?
Ch. 2.5 - What are steroids?Ch. 2.5 - Prob. 8QCCh. 2.5 - How are amino acids linked to form peptides and...Ch. 2.5 - What are the four levels of structural...Ch. 2.5 - 10. What are the components and roles of ATP?
Ch. 2.5 - 11. How do DNA and RNA differ?
Ch. 2.5 - 11. What are the three components of a...Ch. 2.5 - Which molecule would be the most soluble in water:...Ch. 2.5 - In Module 2.3, you learned that increasing...Ch. 2.5 - 3. How could a defect in a gene lead to a...Ch. 2 - Prob. 1CYRCh. 2 - Fill in the blanks: Isotopes are atoms with the...Ch. 2 - 3. Which of the following statements correctly...Ch. 2 - 4. Explain the difference between an ionic and a...Ch. 2 - Identify each of the following molecules or...Ch. 2 - What are hydrogen bonds, and how do they form?Ch. 2 - Prob. 7CYRCh. 2 - Prob. 8CYRCh. 2 - Which of the following would not result in an...Ch. 2 - 10. An enzyme is a:
a. biological catalyst that...Ch. 2 - Prob. 11CYRCh. 2 - With respect to their solubility in water,...Ch. 2 - Mark the following statements as true or false. If...Ch. 2 - A salt is: a. a metal cation bonded to a nonmetal...Ch. 2 - 15. Compare and contrast the structures of...Ch. 2 - 16. Mark the following statements as true or...Ch. 2 - 17. Why is it important for a protein to maintain...Ch. 2 - Which of the following is not part of a...Ch. 2 - 19. Mark the following properties as belonging to...Ch. 2 - Which of the following statements is/are true...Ch. 2 - 1. In certain types of radioactive decay, the...Ch. 2 - Considering that water is a main component of the...Ch. 2 - 3. Explain why monosaccharides are polar and fatty...Ch. 2 - 1. The polysaccharide cellulose is not digestible...Ch. 2 - Some claim that the pH of your blood can be...Ch. 2 - Prob. 3AYKCh. 2 - Prob. 5AYKCh. 2 - You have just dropped some phospholipids into...
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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
- Reaction R: protein-OH + Pi -> phosphorylated protein + H20 Reaction S: protein-OH + ATP -> phosphorylated protein + ADParrow_forwardHow can the phosphorylation of a protein result in conformational changes? Hint: there are at least two reasons.arrow_forwardCan you answer all the parts to following question, true or false: Q27: A: Because enzymes reduce the activation energy of a reaction the resulting free energy produced by the reaction is also reduced (True or False) B: Living things create energy through the breakdown of food into nutrients which the cell can use. (True or False) C: All tissues in the body are able to use ketone bodies to generate energy (True or False) D: Autophosphorylation is a mechanism of receptor activation for both Insulin and leptin (True or False)arrow_forward
- What type of reaction takes place during catabolism of proteins?arrow_forwardLactose is a disaccharide made of a glucose and a galactose bonded together. Lactose is found in milk yet does not taste sweet because our taste receptors do not sense lactose. Our taste receptors do sense galactose and glucose. How can a mug of warm milk taste sweet, without adding sugar? [Select the best answer.] The activation energy required for the hydrolysis of lactose into glucose and galactose is supplied by heating the milk. The milk proteins are denatured by the heat. The reaction is endergonic so the heat is the energy required for the reaction to occur. The lactose has less free energy than the glucose and galactose.arrow_forwardRecently, consumption of trans fatty acids has been linked to high blood cholesterol levels and increased risk of heart disease. The food industry has responded by decreasing use of "trans fats." Consider the following questions: (a) How do the structures and transition temperatures of trans, cis, and saturated fatty acids differ, and what are the effects on membrane fluidity? (b) Are trans fatty acids abundant in nature? (c) The major source of trans fats is hydrogenated oils. (The trans fats are produced by a side reaction during the hydrogenation process.) Why has the food industry used synthetically produced hydrogenated oils?arrow_forward
- When you exercise, your muscles are using ATP to do the movements. Thus, the cell is doing cellular respiration in order to replace the ATP it has used. A) Draw a series of diagrams showing the energy transfers that occur during exercise (include: ATP, muscle, heat, cell respiration, glucose). B) When we exercise, we produce a lot of heat, to cool us down, our body produces sweat. According to the laws of thermodynamics, where is the heat coming from? C) When we exercise to lose weight, where is that mass going (do we sweat it out, it turns into heat, becomes digestive waste, how do we eliminate it?)?arrow_forwardAs you likely know, the lysosome is filled with hydrolyzing enzymes. As a result, the environment inside is held constant at a pH of 2 to protect the rest of the cell should the lysosome rupture. i. Based on our discussion of chemical reactions in class, define the term hydrolyzing. ii. Name the major class of macromolecules that enzymes belong to. iii. Based on the pH of the lysosome compared to the rest of the cell, how does the cell's proton [H+] concentration compare (i.e. is it higher or lower)? note: There are no dots or arrows associated with this model. CECEarrow_forwardDescribe protein denaturation and its effectsarrow_forward
- a) What is the Steady State assumption; how does steady state differ from equilibrium? b) Transition state; what are two ways that enzymes can decrease the transition state energy?arrow_forward23arrow_forwardComplete Some enzymes require additional ...........................to catalyze reactions effectively. These could be small organic molecules or ........................... ions.arrow_forward
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