Carbohydrate digestion begins when the complex carbohydrate starch is broken down into maltose. Which enzymes catalyze...

Carbohydrate digestion begins when the complex carbohydrate starch is broken down into maltose. Which enzymes catalyze the breakdown of maltose into monosaccharides, and where are the enzymes found?

a)Carbohydrases located throughout the intestines

b)Pancreatic amylase released by the pancreas

c)GLUT2 located on the basolateral surface

d)Disaccharidases located at the intestinal brush border

Solutions

Expert Solution

Disaccharidases located at the intestinal brush border, catalyze the breakdown of maltose into monosaccharides.

These enzymes are glycoside hydrolases which catalyzes the hydrolysis of glycosidic bonds in complex sugars and convert them into simple sugars for absorption.

Examples of disaccharidases are :

Lactase ( breaks down lactose into glucose and galactose )

Maltase ( breaks down maltose into two molecules of glucose )

Sucrase ( breaks down sucrose into glucose and fructose )

Trehalase ( breaks down trehalose into two glucose )

A genetic defect in lactase causes lactose intolerance and in sucrase causes sucrose intolerance.

Carbohydrases breaks down complex sugars like starch into simpler sugar. Example : amylase which breaks down starch into maltose.

Pancreatic amylase coverts dietary starch into disaccharides and trisaccharides.

GLUT 2 ( Glucose transporter 2 ) is a transmembrane carrier protein that enables protein facilitated glucose movement across the cell membrane. It is the main transporter of glucose between liver and blood.

Sydney Mullin answered 4 weeks ago

Next > < Previous

Related Solutions

Indicators Starch and maltose when dissolved in water are colorless. To determine if starch or maltose...

Indicators Starch and maltose when dissolved in water are colorless. To determine if starch or maltose are present chemical indicators must be used for the researcher to qualitatively visualize the presence of starch and maltose. The indicators used in this experiment are listed below. IKI (potassium iodide) starch test is an indicator of starch. In a positive IKI test a blue-black color change occurs, even if the blue-black color disappears after the addition of IKI. A negative result is recorded...

1)Which of the following is true of enzyme characteristics? (a) enzymes catalyze reactions when a substrate...

1)Which of the following is true of enzyme characteristics? (a) enzymes catalyze reactions when a substrate binds to the allosteric site (b) enzymes catalyze reactions by increasing the activation energy (c) enzymes do not exhibit specificity and a single enzyme can catalyze various different reactions (d) enzymes lower the activation energy of specific reactions, speeding up the reaction rate 2) Microbial growth is measured by what parameter? (a) increased cell size (b) increased size of cellular components (c) increase in...

B. PROTEINS 1. Chemical digestion of proteins by enzymes first begins in the stomach. Name the...

B. PROTEINS 1. Chemical digestion of proteins by enzymes first begins in the stomach. Name the gastric enzyme that initiates protein digestion. Explain how this enzyme is activated. 2. Pancreatic juice contains enzymes which digest proteins including trypsin and chymotrypsin. Name the ducts in the pathway by which pancreatic juice flows from the pancreas to the duodenum. 3. The products of chemical digestion of dietary proteins are amino acids (protein subunits), which are then absorbed into the bloodstream. Describe 3...

-Which organs produce digestive enzymes? Where does digestion occur? Where does digestion start? Where does most...

-Which organs produce digestive enzymes? Where does digestion occur? Where does digestion start? Where does most nutrient absorption occur? Where does most water reabsorption occur? How are fats absorbed into the body? What is the role of cholecystokinin? -Thinking back to earlier in the class: Be able to determine how pH and oxygen impact solute transport across the intestinal epithelium. How is transport of a solute impacted by concentration gradient? How could you determine if transport is dependent on sodium,...

Which enzymes involved in carbohydrate catabolism would be affected by niacin deficiency (list all)?

When glucose enters a pancreatic beta cell, it is broken down and triggers a cascade of...

When glucose enters a pancreatic beta cell, it is broken down and triggers a cascade of events leading to insulin production and secretion. Describe the steps involved. Bullet points with no description will only receive partial grade.

Digestion enzymes which cells release these proteins; which digestive tract organs release what substances? From which...

Digestion enzymes which cells release these proteins; which digestive tract organs release what substances? From which cells? What are the functions of these organs? What hormones affect stomach and duodenum activity?

Carbohydrates are the main sources of fuel for the body. They’re broken down into glucose, which...

Carbohydrates are the main sources of fuel for the body. They’re broken down into glucose, which is “burned” as fuel for the body. i. What is expected to occur when the body’s supply of glucose runs out? ii. Would insulin or glucagon be of any importance in this regard? Explain your answer. iii. As a nurse on duty, a patient is brought to the emergency ward with symptoms of weakness, dizziness, headache and slight disorientation. The patient has a history...

To be in good form, a balance sheet should be broken down into specific sections. Which...

To be in good form, a balance sheet should be broken down into specific sections. Which of the following is the correct order for the asset sections to appear on a U.S. GAAP balance sheet? Current Assets, Long-term Investments, PPE, Intangibles Current Assets, Long-term Investments, Intangibles, PPE Current Assets, PPE, Intangibles, Long-term Investments Current Assets, PPE, Long-term Investments, Intangibles

Glycolysis is a catabolic pathway, in which glucose is broken down to generate ATP. Would this...

Glycolysis is a catabolic pathway, in which glucose is broken down to generate ATP. Would this pathway occur when there is high energy charge in the cell? Why/why not?

Subjects