![Theresab2021](/avatars/39720.jpg)
Theresab2021
02.03.2020 •
Biology
Scientists can use mutants to study metabolic pathways. These organisms have a mutation in a gene encoding a metabolic pathway enzyme that results in the inactivation of that enzyme. Saccharomyces cerevisiae (a yeast species) mutants are available that grow on fructose, but not glucose. Which of the following glycolytic enzymes is mostly likely affected?
(A) phosphoglycerate kinase
(B) enolase
(C) pyruvate kinase
(D) phostphoglycerate mutase
(E) Phosphoglucose isomerase (phosphohexose isomerase or glucose-6-phosphate isomerase)
Solved
Show answers
More tips
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Biology
- B Biology In Mendel’s garden, there were only either tall pea plants or short pea plants. How does this go against the widely accepted blending inheritance hypothesis?...
- B Biology PLEASE ANSWER THIS OML I AM GETTING SICK OF THE SAME PERSON USING ME FOR POINTS Here’s the link https://youtu.be/ROPmyjZTmK4 and just put your answers for each question also...
- B Biology Which of the following statements describes all the variables in an experiment...
- B Biology How do balanced chemical equations show the conservation of mass? cod they show that the atoms in the products may be different than the reactants as long as the mass does...
- B Biology Which of the following statements is not true about oogenesis in humans? (a) four equal size daughter cells will form (b) at least two nonfunctional polar bodies will form...
- B Biology Everyone in Squidward’s family has light blue skin, which is the dominant trait for body color in his hometown of Squid Valley. His family brags that they are a “purebred”...
- B Business Which of the following statements are true oflong-term investments? a. They can include bonds and stocks not intended to be sold in the near future. b. They can be considered...
- C Chemistry Theories don’t just change without good reason. There needs to be evidence that either disproves an old theory or supports a new one. What is one example of evidence that changed...
- H History 2.Why would the Goodnight-Loving Trail or the Great Western trail be used to send cattle to California? Other Questions and Vocabulary from the Unit (pages 473-553) 3.What...
- C Chemistry Select two of the following options below that would have a displacement of zero meters. * A deer crosses a 2-lane highway. A racecar driver drives 6 laps around a 400-meter...
Ответ:
(E) Phosphoglucose isomerase (phosphohexose isomerase or glucose-6-phosphate isomerase)
Explanation:
Glyocolysis is break down of glucose into pyruvate.
Isomerization:The second step of glycolysis involves the conversion of glucose-6-phosphate to fructose-6-phosphate (F6P). This reaction occurs with the help of the enzyme phosphoglucose isomerase (PI). As the name of the enzyme suggests, this reaction involves an isomerization reaction.
Yeast mutant lacking phopshoglucose isomerase unable to performed this step and that's why it unable to grow in media containing glucose while in fructose break down this step is not required so it is able to grow in media containing fructose.
Deletion of phosphoglucose isomerase, prevents growth on glucose; therefore, phosphoglucose isomerase mutant is able to grown in a fructose medium.
Ответ: