Situational Problems1. With the prevalence in food of peeled cereals or bread made from high-grade flour,hypovitaminosis B1 may occur. Explain the role that vitamin B, plays in the body.For this:a) name the coenzyme which contains vitamin B, and enzymes, which requirethis coenzyme to function;b) write the process in which these enzymes are involved and explain how theprocess speed will change with a lack of B,;d) what discase develops in the absence of vitamin B,.

The vitamins are organic compounds in the diet which are required for the normal growth and health…

Answered: With the prevalence in food of peeled…

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

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In eukaryotes, fatty acids are stored as triglycerides in cells that have A) Golgi that store fatty acids B) too little atp C) Lysosomes that synthesize glycogen from excess glucose D) Liposomes that contain an enzyme that performs dehydration synthesis E) mRNA that makes amino acids in to fat Explain why
In humans, where does amino acid catabolism occur (i.e., the urea cycle)? a)Pancreas b)Kidney c)Skeletal muscle d)Liver e)Urea cycle enzymes are found in all tissues
An "AA" genotype at the ALOX5AP -4900 A>G locus acting in the 5-lipoxygenase pathway may increase risk of breast cancer when intake of which fatty acid is high? a) Stearic acid b) Eicosapentanoic acid c) Linoleic acid d) Alpha-linolenic acid
B. Describe the function implied by the name of each of the following enzymes 1. Citrate decarboxylase 2. Adenine diphosphate phosphorylase 3. Oxalate reductase 4. Nitrite oxidase 5. cis-trans isomerase
Match the water soluble vitamin with its main function. coenzyme specifically with tryptophan metabolism, hemoglobin Choose... DNA, RNA, cell division Choose... thiamin, riboflavin, niacin vitamin C antioxidant, collagen synthesis, redox B12 Folate coenzyme B6 Choose... DNA, RNA, methionine metabolism >
Age-related macular degeneration (ARMD) within the eye is a disease that is closely related to atherosclerosis. In ARMD, drusen are formed, which is similar to an atherosclerotic plaque, and ultimately vision is distorted. Given the close relationship between atherosclerosis and ARMD, what is likely to accumulate in drusen? OA) Cholesterol. OB) HMG-CoA reductase. OC) HDL. OD) Mevalonate.
Which one of the following processes is endergonic? Question 6 options: a) the burning of wood b) the release of heat from the breakdown of glucose c) the breakdown of glucose d) the synthesis of glucose from carbon dioxide and water e) cellular respiration
Choose which enzyme is likely deficient based on the symptoms described below: Elevated blood lactate, alanine and pyruvate a) lactate dehydrogenase d) citrate synthase c) pyruvate dehydrogenase d) pyruvate kinase
Von Gierke’s disease is a rare genetic disorder that results in a deficiency of glucose-6-phosphatase. Symptoms ketoacidosis, a buildup of glycogen in the liver, and lactate buildup. Why does this glycogen storage disease not affect the brain? a) The brain is able to still perform glycolysis effectively b) None of the above c) In the event of hypoglycemia, the brain is able to utilize other sources of energy to produce ATP d) The brain is able to metabolize lactate, which is present in high concetrations.
Serum concentrations of acetoacetate and ß-hydroxybutyrate increase dramatically after a 3-day fast primarily because of the increased rate of which of the following?A) Fatty acid oxidation in liverB) Fatty acid synthesis in liverC) Glycogenolysis in liverD) Glycolysis in skeletal muscleE) Protein degradation in skeletal muscle
Which of the following statement regarding coenzyme A is incorrect? a) The B vitamin pantothenic acid is present as a subunit of its structure. b) Its main biochemical function is to transfer acetyl groups. c) Its structure contains a phosphorylated ADP.. d) The B vitamin pantothenic acid is the “active” subunit of the coenzyme A.
Glucose is stored as glycogen (a polymer) in some eukaryote cells (such as liver cells or muscle cells). This cellular storage is performed A) by an enzyme that causes dehydration synthesis in a specialized organelle, B) by a carbohydrate in a liposome, C) by a dehydration enzyme and stored as fat in an adipose cell, D) exocytosis of the glycogen, E) as glucose stored in the nucleus by special genes in the DNA.

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