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Concept explainers
(a)
Interpretation: The validation of the given statement about the steroid nucleus has to be stated.
Concept introduction: The structure of a lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
(b)
Interpretation: The validation of the given statement about the steroid nucleus has to be stated.
Concept introduction: The structure of a lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
(c)
Interpretation: The validation of the given statement about the steroid nucleus has to be stated.
Concept introduction: The structure of a lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
(d)
Interpretation: The validation of the given statement about the steroid nucleus has to be stated.
Concept introduction: The structure of a lipid that is based upon the fused system of rings which includes three identical six-membered rings and only one five-membered ring is known as steroid. The fused ring system of the steroid is known as the steroid nucleus.
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Chapter 19 Solutions
General, Organic, and Biological Chemistry Seventh Edition
- A group of researchers have isolated three novel compounds from the venom of a newly discovered species of wasp. Based on their structure and protein chemistry, the researchers believe that all three compounds may have strong anti-inflammatory activity and they have devised an experiment to test whether their compounds can reduce muscle damage after exercise. They plan to induce muscle damage in mice by causing repeated eccentric contractions (by running them downhill on a treadmill), and then examine the amount of inflammation in the muscles of their mice 24hrs later. They will use the following treatment groups: Sample 1) no treatment (control) Sample 2) 1mg/kg of Compound ‘A’ Sample 3) 1mg/kg of Compound ‘B’, and; Sample 4) 1mg/kg of Compound ‘C’. They perform their experiment and analyse their results using ANOVA followed by a post-hoc test. The results are as follows: (IMAGE ATTCAHED) QUESTION IS: Having selected which of their compounds seems the most promising, the…arrow_forwardAn example of a glycerophospholipid that is involved in cell signaling is: O A. ceramide O B. arachidonic acid. OC. Vitamin A (retinol) O D. phosphatidylinositol 4,5-bisphosphate O E. testosterone CS Scanned with CamScannerarrow_forwardWhich of the following about adenosine triphosphate (ATP) is FALSE? A) There are two phosphoanhydride bonds with similar energies B) ATP can be used as a substrate to make cyclic AMP (cAMP) after a cell has been stimulated with certain specific hormones C) The γ-phosphate can be transferred (e.g. to chemical group on a protein enzyme) such as the Na+-K+ pump, which is part of a coupling mechanism that allows otherwise unfavourable reactions to proceed No possible answer provided E) The large, negative, free-energy change upon hydrolysis of “high-energy” compounds like ATP is partly due to the creation of resonance stabilized productsarrow_forward
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- A study is conducted to assess the molecular mechanisms of hormone X. A radioactively labeled form of this hormone is incubated with human cells in tissue culture for 30 minutes, and then incubated briefly with a cross-linking agent. The plasma membrane, cytosolic, and nuclear fractions are isolated from the cell lysate, and the subcellular proteins are separated from these fractions by gel electrophoresis. The only protein bound to the labeled hormone is identified in the new clear fraction. Hormone X is most likely which of the following? Epinephrine Glucagon Growth hormone Insulin Thyroxinearrow_forwardWhich of the following statements regarding adenosine phosphates is incorrect? a) ATP, ADP and AMP are all examples of adenosine phosphates. b) All adenosine phosphates contain a pentose ribose sugar. c) All phosphate ions in adenosine phosphates are joint together by a phosphoanhydride bond. d) All adenosine phosphates releases energy upon cleavage of phosphate group.arrow_forwardDefine the following terms: a. intrinsically disordered protein b. intrinsically disordered region c. prosthetic group d. apoprotein e. molecular chaperonearrow_forward
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