36alWhat must happen first in order for dietary fats (triacylglycerols) to be digested?A) They must be made soluble in the aqueous environment.OB) They are broken down into smaller units in the saliva.OC) Each fatty acid is shortened by two-carbon units.OD) One or two fatty acids are removed from the glycerol backbone.

Fats (i.e. triacylglycerols) are hydrophobic. Once ingested, most of the fats reach the intestine…

Answered: What must happen first in order for…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

What would happen to the functionality of cholic acid if the 3 hydroxy groups were removed? A) There would be more thorough digestion of fats B) It would mix with the watery phase of chyme C) It would mix with lipids in the fatty phase of chyme D) Chemical digestion of lipids would be less effective E) Both choices C & D F) A & B are correct
5.2. About lipid metabolism, what are the correct statements? PHYSIOLOGY_advanced a) During prolonged starvation, the fatty acids can be converted into ketone bodies in the liver. b) Fat in adipose tissue is hydrolyzed to give glycerol and fatty acids during fasting or during exercise. c) Lipids are water-soluble bio-molecules but insoluble in organic solvents. d) Triacylglycerols (TAG) are lipids that can be used to produce energy under the form of adenosine triphosphate (ATP) in humans. e) The major pathway for beta-oxidation of fatty acids occurs on the matrix side of the inner mitochondrial membrane.
Which of the 20 “standard” amino acids are (a) purely glucogenic, (b) purely ketogenic, and (c) both glucogenic and ketogenic?
a) What are the biological functions of lipids? b) Explain the purpose of bile acids and fatty acid–binding protein in the digestion and absorption of lipids. c) Describe the overall structure of lipoproteins. What are the types of lipoproteins?
Fatty acids are stored in adipose tissue, as triacylglycerol (TAG) forms. TAGs are degraded as glycerol and fatty acids where energy is required. Based on that knowledge explain: a) How these products are used in the adipose, liver, and other tissue? b)Why glycerol can not be metabolized in adipose tissue?
(a) What is protein turnover? Give 1-2 examples. (b) What are the main differences between glucogenic and ketogenic amino acids?
Lactose in milk is hydrolyzed, absorbed through the intestines, and then utilized for energy metabolism. Oligosaccharides that are not hydrolyzed in the digestive tract cannot be absorbed nor used for energy. Choose the best explanation for why these oligosaccharides would be necessary in human milk (or infant formula). A) These oligosaccharides prevent weight gain in infants. B) These oligosaccharides absorb excess energy, allowing infants to sleep. C) These oligosaccharides train the digestive tract to tolerate high levels of sugars, necessary for a typical adult American diet. D) These oligosaccharides provide fiber and prevent constipation.
What is the correct order, from highest content to lowest content, for triacylglycerols in the following lipoproteins? OA) LDL, HDL, IDL, chylomicrons B) IDL, LDL, HDL, chylomicrons O C) VLDL, chylomicrons, LDL, HDL OD) Chylomicrons, VLDL, LDL, HDL E) Chylomicrons, VLDL, HDL, IDL
What is the reason that amino acid degradation spikes approximately 24 hours after starting a fast? (A) The brain adapts to using ketone bodies, and amino acids serve as the primary precursors for ketone bodies.(B) Red blood cells begin using amino acids to drive their citric acid cycle.(C) Amino acids are broken down and used to replenish glycogen. (D) The liver needs to make glucose for brain and RBCs, and amino acids provide the carbon skeleton for gluconeogenesis.(E) The ammonia released from amino acid breakdown is a substrate for b-oxidation, which increases during prolonged fasting.
Eicosanoids and endocannabinoids, which are hormone-like substances, are made from which fatty acid? ? a) kinetic acid b) oleic acid c) linolenic acid d) arachidonic acid Sphingomyelin differs from phosphatidyl choline in that: a) kinetic acid is absent in sphingomyelin b) sphingosine replaces glycerol in sphingomyelin c) sphingomyelin contains 2 choline molecules Which of these lipids contains no fatty acids? a) cerebrosides b) lecithin c) cholesterol d) plant oils Which of these is an ABC transporter? a) Na/K pump b) MDR protein c) Na/Ca antiporter d) Na/glucose symporter In an ion channel, the part of the channel protein which specifically binds to the ion is called: a) a voltage-gated channel b) a ligand-gated channel c) an antiporter d) a selectivity filter Symporters and antiporters may transport one chemical species against its concentration gradient. Energy for this is obtained from: a) ATP b) NADH via oxidative phosphorylation c)…
During fasting, the glycerol backbone of the triacylglycerol can be converted which of the following? a) Cholesterol b) Fatty Acids c) Glucose d) Bile Acids e) None of the above
1) The major function of high density lipoprotein (HDL) is to, choose all correct answers. (A) bind high density lipoprotein (HDL). (B) transport cholesterol to peripheral tissues. (C) serve as a precursor for cholesterol biosynthesis. (D) transport cholesterol from peripheral tissues to liver. (E) serve as a site for the esterification of cholesterol. 2). Individual with the genetic disease of Familial hypercholesterolemia have higher levels of cholesterol in the blood, which of the following could cause this disease: (A) deregulated biosynthesis of low-density lipoprotein (LDL) receptors (B) high dietary cholesterol (C) plaque formation in the arteries. (D) high cholesterol biosynthesis in liver tissue. (E) deregulated biosynthesis of low-density lipoprotein (LDL) 3) The enzyme inorganic pyrophosphatase utilizes ____ as its substrate. A). ATP B). ADP C). AMP D). PPi E). phosphate

SEE MORE QUESTIONS

Recommended textbooks for you

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781319114671

Author:

Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:

W. H. Freeman

Lehninger Principles of Biochemistry

Biochemistry

ISBN:

9781464126116

Author:

David L. Nelson, Michael M. Cox

Publisher:

W. H. Freeman

Fundamentals of Biochemistry: Life at the Molecul…

Biochemistry

ISBN:

9781118918401

Author:

Donald Voet, Judith G. Voet, Charlotte W. Pratt

Publisher:

WILEY

Biochemistry

ISBN:

9781305961135

Author:

Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal

Publisher:

Cengage Learning

Biochemistry

ISBN:

9781305577206

Author:

Reginald H. Garrett, Charles M. Grisham

Publisher:

Cengage Learning

Fundamentals of General, Organic, and Biological …

Biochemistry

ISBN:

9780134015187

Author:

John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson

Publisher:

PEARSON

SEE MORE TEXTBOOKS