Human Biology Custom Edition
11th Edition
ISBN: 9781337631532
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 3, Problem 3CT
Section 3.17 mentions that arsenic poisons human cells because it halts the production of ATP. This happens because the structure of arsenic atoms closely resembles that of phosphorus atoms—so close, in fact, that arsenic can take the place of phosphorus in
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Chapter 3 Solutions
Human Biology Custom Edition
Ch. 3 - Describe the general functions of the following in...Ch. 3 - Which organelles are in the endomembrane system?Ch. 3 - Distinguish between the following pairs of terms:...Ch. 3 - What do enzymes do in metabolic reactions?Ch. 3 - In aerobic cellular respiration, which reactions...Ch. 3 - For the diagram of the aerobic pathway shown in...Ch. 3 - The plasma membrane __________. a. surrounds the...Ch. 3 - The _________ is responsible for a eukaryotic...Ch. 3 - Cell membranes consist mainly of a _________. a....Ch. 3 - Prob. 4SQ
Ch. 3 - The passive movement of a solute through a...Ch. 3 - Match each organelle with its correct function.Ch. 3 - Which of the following statements is not true?...Ch. 3 - Enzymes _______. a. enhance reaction rates b. are...Ch. 3 - Match each substance with its correct descriptionCh. 3 - Cellular respiration is completed in the ______....Ch. 3 - Prob. 11SQCh. 3 - In a mitochondrion, where are the electron...Ch. 3 - Prob. 1CTCh. 3 - Jogging is considered aerobic exercise because the...Ch. 3 - Section 3.17 mentions that arsenic poisons human...Ch. 3 - The cells of your body never use nucleic acids as...
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- Electrons in glucose have relatively high free energies. How do they become so energetic?arrow_forwardThe thyroid gland metabolizes iodine, the most common formof which has a molecular weight of 127 (iodine-127). A physi-cian wants to use a radioactive isotope of iodine (iodine-131)to test whether a patient’s thyroid gland is metabolizing nor-mally. Based on what you know about how atoms react, doyou think this physician’s plan makes sense?arrow_forwardCholesterol is synthesized by all animal cells and is an essential structural component of animal cell membranes. Cholesterol is the most common steroid and is mainly synthesized in the liver. Cholesterol also serves as a precursor for several important biological compounds including all, EXCEPT: X A B C x D testosterone bile salts vitamin D insulin H H Narrow_forward
- What are the common fatty acid chains in phosphoglycerides, and why do these fatty acid chains differ in their number of carbon atoms by multiples of 2?arrow_forwardIn a dietary context, what is the difference between good and bad cholesterol?arrow_forwardAlthough the first two carbons of fructose and glucose are identical in structure to DHAP and GADP (from glycolysis), DHAP and GADP equilibriate on their in solution to favor the ketone over the aldehyde, while fructose and glucose do not. Why? a)The larger size of the molecule sterically hinders the isomerization b)The larger sugars have more OH groups which hydrogen bond and disrupt isomerization c)The larger sugars cyclize, and there is no carbonyl to isomerize in the cyclic form d)The larger sugars cyclize, and in the cyclic form the hydrogen bonding is very strong e)The larger sugars are less soluble in water than the smaller sugarsarrow_forward
- Thioesters, common in biochemistry, are more unstable (energy-rich) than oxygen esters. Explain why this is the case.arrow_forwardWhich of the following is true of the molecule pictured below? A) It will spontaneously form into biological membranes. B) It would be liquid at room temperature because it contains unsaturated fatty acids. C) It would be solid at room temperature because it contains only saturated fatty acids. D) It would be liquid at room temperature because it contains only saturated fatty acids. E) It would be solid at room temperature because it contains unsaturated fatty acids.arrow_forwardThe fact that acid-anhydride bonds are less stable than ester bonds helps explain the fact that the bond between the: Beta- and gamma-phosphoryl groups in atp is a high energy bond, but not the bond between the alpha-phosphorly groups and the hydroxyl of ribose. Phosphorly groups and the hydroxyl at the C-3 position in 3-phosphoglycerate is a high-energy bond. Beta- gamma- phosphoryl groups in ATP is a high-energy bond, but not bond between the alpha and beta-phosphoryl groups. Alpha-phosphorly group (i.e, the one nearest the ribose) and the hydroxyl at the 5’ position in ATP is a high-energy bond.arrow_forward
- Several substances found in nature or within living organisms themselves are essential to the life. Thus, for each of the following substances, please give a concrete example briefly describing how their properties make them essential to life. A) Acid (pH below 7) B) Lipidarrow_forwardWhich noncovalent interactions (discussed in Section 8.2) are responsible for the cohesion of lipid molecules? Is the overall strength of these forces weak or strong? Why are lipids incompatible with water?arrow_forwardName two essential fatty acidsarrow_forward
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