Why is the transport of glucose from the lumen of the small intestine to the bloodstream considered to be secondary active transport? a. It moves glucose through the intestinal epithelial cell and thus requires metabolic energy b. it requires the cotransport of glucose and potassium ions c. it relies on the establishment of pre-existing sodium gradients d. It requires no ATP energy at all. e. It generates a "futile cycle" of potassium import into and export from the gut epithelial cell.

Why is the transport of glucose from the lumen of the small intestine to the bloodstream considered to be secondary active transport? a. It moves glucose through the intestinal epithelial cell and thus requires metabolic energy b. it requires the cotransport of glucose and potassium ions c. it relies on the establishment of pre-existing sodium gradients d. It requires no ATP energy at all. e. It generates a "futile cycle" of potassium import into and export from the gut epithelial cell.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter5: Membranes And Transport

Section: Chapter Questions

Problem 4TYK: A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot...

See similar textbooks

Similar questions

36. Which of the following examples correctly identifies crossing from the external environment to the internal environment of the body? Swallowing food a. b. Glucose moving from the extracellular fluid (ECF) into the cell through glucose transporters Movement of a hydrophobic hormone from the bloodstream to the extracellular fluid after detaching from a transport protein d. Passage of food from the stomach to the small intestine through the pyloric sphincter None of the above are correct e.
1. When all the protein carriers are used up, the carriers are said to be A. Adapted B. Unsaturated C. Saturated D. Consumed 2. The proteins that constantly transport sodium ions outside the membrane is called A. Membrane pump B. Calcium-potassium pump C. Sodium-potassium pump D. Glucose-potassium pump E. Protein-potassium pump 3. The process in the question above gets its energy from A. ADP B. ACT C. PTA D. ATP E. TPA
Select the appropriate transport mechanism(s) that is/are described below. 1. Requires expenditure of energy in the form of ATP to transport cell materials. a. Active Transport b.Bulk Transport c. Passive Transport d. Active and bulk e. Active and passive f. bulk and passive 2.Re-absorption of nutrients in the kidney. a. Active Transport b.Bulk Transport c. Passive Transport d. Active and bulk e. Active and passive f. bulk and passive 3.Gas exchange of organisms is an application of this process.
Transepithelial transport of glucose by the enterocyte utilizes which of the following sequences of transport processes during absorption of glucose? A. First facilitated diffusion, then secondary active transport B. First primary active transport, then facilitated diffusion C. First primary active transport, then secondary active transport D. First secondary active transport, then facilitated diffusion E. First secondary active transport, then primary active transport
3. In the image below, identify the primary active transporter and the secondary active transporter. Apical surface Basal surface Intestinal Blood lumen Microvilli 2 K* Epithelial cell 3 Nat 00 Na*K+ 2 Na+ ATPase Glucose Glucose Glucose uniporter GLUT2 (facilitates downhill efflux) Nat-glucose symporter (driven by high extracellular [Na*1) Figure 11-41 Lehinger 2017WH freeran and Compay ncples of Bincheminy Seventh Edtion 4. The actions of cardiac glycoside drugs are not confined exclusively to heart tissue. How would ingestion of a cardiac glycoside affect uptake of glucose in the intestine? Refer to actions of the cardiac glycoside on the system in the image above in your answer. 5. Calculate the free energy change associated with moving glucose into the cell. The experimental conditions are as follows: 37 °C, 5 mM extracellular glucose, 0.4 mM intracellular glucose. Show all work.
When blood glucose level rises, the pancreas secretes insulin, and as a result blood glucose level declines. When blood glucose level is low, the pancreas secretes glucagon, and as a result blood glucose level rises. Such regulation of blood glucose level is the result of A reproduction thermal regulation community homeostasis 2,279 12 tv N MacBook Air DII DD F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F1 @ %23 24 2 6. %3D * CO
a. Substance X is transported by passive transport and Substance Y is transported by active transport b. Substance X is transported by active transport and Substance Y is transported by passive transport c. Substance X is transported by active transport and Substance Y is transported by active transport d. Substance X is transported by passive transport and Substance Y is transported by passive transport
22. Which of the following statements about passive processes of membrane transport is true? a. cellular energy is not required b. substances move along its concentration gradient c. all require the aid of proteins during transport d. a and b e. a and c
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
Sodium/glucose cotransporters on intestinal cells move glucose from the intestinal lumen (low glucose concentration) to inside the cell (high glucose concentration). Which of the following would increase the rate of glucose transport into the cell? a. Increase the intracellular glucose concentration. b. Decrease the extracellular glucose concentration. c. Decrease the extracellular Na+ concentration. d. Increase the extracellular Na+ concentration.
1. Glucose cannot enter easily inside the cell and require insulin to do so. What type of transport/movement does glucose may exhibit? 2. Short description of the process shown in the figure below and identify what type of transport/movement it is.
32. The uptake of a large amount of fluid into the tubule cells of the kidney is an example of: a. receptor-mediated exocytosis. b. receptor-mediated endocytosis. c. phagocytosis. d. pinocytosis. e. simple diffusion rigu