Concept explainers
To determine: The reason how an enzyme cofactor needed for an essential process is an essential nutrient for only some animals.
Introduction: A coenzyme is an organic non-protein compound that binds with an enzyme to catalyze a reaction. Many coenzymes, though not all, are vitamins or derived from vitamins. Thus, the enzyme cofactors play an important role in performing normal physiological processes in their system. Most of the animals can synthesize these enzyme cofactors in their own body, but some require their supply through diet.
Explanation of Solution
Essential nutrients are the nutrients that cannot be synthesized by the body but required to carry out the normal physiological functions and must be provided through diet. There are six essential nutrients: carbohydrates, fats, proteins, vitamins, minerals, and water. Coenzymes primarily function as helper molecules in enzyme-catalyzed reactions. Most of the coenzymes are the vitamins (Vitamins A, C, B1, B2, B3, B6, B12, H, and K) or vitamin derivatives (NADH, FADH, Quinine, and CoA).
Many animals can produce most of the vitamins they need such as vitamin B3, vitamin C, and vitamin D on their own. But some of the animals cannot synthesize some vitamins or vitamin-derived cofactors, which are thus essential nutrients for them, and they need to intake these in their diet.
- For example, anthropoid primates (humans, monkeys, and apes), guinea pigs, particular Indian fruit-eating bat, and some birds do not possess the ability to synthesize Vitamin C because of a defective mutation in the gene controlling the synthesis of L-gulonolactone oxidase (GLO gene) that blocks the conversion of glucose to ascorbic acid.
- The common ancestor of birds and mammals today live in an environment with abundance of green plants containing thiamine. Hence, they lost the gene responsible for the production of Vitamin B1 (thiamine) in their own body. Thus, Vitamin B1 became an essential nutrient for them.
The cofactors are needed as an essential nutrient in some animals that lack the ability to produce enzyme cofactors in their own body.
Want to see more full solutions like this?
Chapter 41 Solutions
CAMPBELL'S BIOLOGY 12E PERUSALL
- what morphological features differentiate the lamprey species and other species in the great lakesarrow_forwardThere are a wide range of therapeutic applications available as options for patients. Medical professionals should be aware of these applications so they can make informed recommendations to patients. To gain a better understanding of some therapeutic applications and how they are related to RNA and mRNA, research long non-coding RNA. Respond to the following in a minimum of 175 words: What is lncRNA and what does it do? How does IncRNA differ from mRNA? What are some therapeutic applications associated with lncRNA? Think about possible future uses of this application. What are the advantages and disadvantages of this application and its continued use?arrow_forwardfour fish or mussel species that are native to the great lakesarrow_forward
- There are a wide range of therapeutic applications available as options for patients. Medical professionals should be aware of these applications so they can make informed recommendations to patients. To gain a better understanding of some therapeutic applications and how they are related to RNA and mRNA, research long non-coding RNA. Respond to the following in a minimum of 175 words: What is lncRNA and what does it do? How does IncRNA differ from mRNA? What are some therapeutic applications associated with lncRNA? Think about possible future uses of this application. What are the advantages and disadvantages of this application and its continued use?arrow_forwardfour physial characteristics of a fish or a mussel that would help you identify it to a speciesarrow_forwarddescribe what you would do in this situation, you are working ona. river and it will take 20 minutes by boat to get back to the field truck, you are 1 hour from finishing the field work on the last day of field trip. you hear thunder int he dsitnace, what did you do?arrow_forward
- unu grow because auxin is still produced in the tip to Another of Boysen and Jensen's experiments included the use of mica, explain why one of the shoots was able to show phototropism and the other was not. Mica Wafer Ligh c. They then t but this time permeable n shoot. Why phototropis Light Mica Wafer Coleoptile tips Tips removed: agar Explain why the shoo direction after the ag the cut shoot, even tarrow_forwardDiscussion entries must be at least 250 words to fulfill the assignment requirements. You must complete your entry before you will be able to see the responses of other students. Responses to other students are encouraged but not required. Grading for discussion entries will be based on application of course concepts, proper grammar, and correct punctuation. Read one the attached article and explore the Human Development Index (https://hdr.undp.org/data-center/human-development-index#/indicies/HDI). In your opinion, is the Human Development Index a good measure of the well- being of the people of a nation? Are the items measured in the HDI valid and relevant in the modern global economy? How are they related to the political economy of a nation? The attached articles propose some alternative measures of well-being. In your opinion, are there other measures of well-being that might be better alternatives to the items in the current HDI?arrow_forwardA patient visits her doctor with symptoms typical of a bladder infection. She is immediately prescribed an 800 mgdose of antibiotic (bioavailability = 1/2, t½ = 12 h). The corresponding plasma concentration of drug is found to be 96 micrograms/ml. What is the volume of distribution of this drug? Please round to the nearest liter.arrow_forward
- A 10 mg/Kg dose of a drug is given by intravenous injection to a 20 Kg dog. What would the volume of distribution be if the drug had been given orally and only 50% of the drug was absorbed (the concentration of drug at time = 0 is 0.1 mg/L)? Be sure to show your work.arrow_forwardAfter oral administration of 10mg of a drug, 50% is absorbed and 40% of the amount absorbed is metabolized by the first pass effect. The bioavailable dose of this drug is ______. Make sure to provide units for your answer. Show your work.arrow_forwardA 10 mg/Kg dose of a drug is given by intravenous injection to a 20 Kg dog. What is the volume of distribution of the drug in liters if the plasma concentration is 0.1 mg/L (assume the drug is instantaneously distributed)? Be sure to show your work.arrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning