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Carbohydrate and Nitrogen: Exercise Test Questions for Deeper Learning, Study notes of Inorganic Chemistry

Exercise test questions related to carbohydrate and nitrogen lectures to help build knowledge, expand learning, and prepare for exams. Topics include glucose transporters in the brain, byproducts of hemoglobin degradation, liver support of blood glucose levels, and more.

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2011/2012

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Connexions module: m41751 1
Carbohydrate and Nitrogen
āˆ—
E. Pennington
This work is produced by The Connexions Project and licensed under the
Creative Commons Attribution License
†
Abstract
These are exercise test questions to help build your knowledge of carbohydrate and nitrogen lec-
tures. This will help expand your knowledge on the topics to maximize learning at a deeper level, build
condence and help you succeed in the course.
1. Which of the following statements is
INCORRECT
about the glucose transporters in the brain?
A. Regions of the brain with higher need for glucose
have high densities of glucose transporters to facil-
itate this uptake.
B. Two types of GLUT1 exist in the cerebral cor-
tex, neurons, astrocytes, microglia and oligodendro-
cytes.
C. GLUT3 is primarily found in astrocytes, oligoden-
drocytes and microglia cells in the brain.
D. GLUT5 is a multifunction transporter predomi-
nantly found in the microglial cells.
E. There are other types of transporters in the brain
such GLUT2, GLUT4 and GLUT7.
Table 1
2. Which of the following byproducts of hemoglobin degradation feeds directly into the amino acid pool?
A. Heme
B. Iron
C. Bilirubin
continued on next page
āˆ—
Version 1.1: Dec 15, 2011 11:45 am US/Central
†
http://creativecommons.org/licenses/by/3.0/
http://cnx.org/content/m41751/1.1/
pf3
pf4

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Carbohydrate and Nitrogen

E. Pennington

This work is produced by The Connexions Project and licensed under the Creative Commons Attribution License †

Abstract These are exercise test questions to help build your knowledge of carbohydrate and nitrogen lec- tures. This will help expand your knowledge on the topics to maximize learning at a deeper level, build condence and help you succeed in the course.

  1. Which of the following statements is INCORRECT about the glucose transporters in the brain? A. Regions of the brain with higher need for glucose have high densities of glucose transporters to facil- itate this uptake. B. Two types of GLUT1 exist in the cerebral cor- tex, neurons, astrocytes, microglia and oligodendro- cytes. C. GLUT3 is primarily found in astrocytes, oligoden- drocytes and microglia cells in the brain. D. GLUT5 is a multifunction transporter predomi- nantly found in the microglial cells. E. There are other types of transporters in the brain such GLUT2, GLUT4 and GLUT7. Table 1
  2. Which of the following byproducts of hemoglobin degradation feeds directly into the amino acid pool? A. Heme B. Iron C. Bilirubin continued on next page

āˆ—Version 1.1: Dec 15, 2011 11:45 am US/Central †http://creativecommons.org/licenses/by/3.0/

D. α and β chains E. Biliverdin

Table 2

  1. Which of the following statements about how the liver support blood glucose levels is INCORRECT? A. Glucagon levels rise during fasting, increasing the cAMP levels to activate glycogen phosphorylase to release glucose from glycogen degradation. B. Glucagon levels decrease in the fed state, decreasing the cAMP levels to stop glycogen degradation by inactivating glycogen phosphorylase. C. Insulin levels rise during fasting, increasing the cAMP levels to activate glycogen synthase for glycogen synthesis. D. Insulin and glucose levels rise during the fed state increasing the uptake of glucose via glucose trans- porters and stimulating glycogen synthesis E. Epinephrine binds alpha and beta receptors to stim- ulate glycogen degradation during periods of exer- cise, stress and hypoglycemia. Table 3
  2. Which of the following metabolites in the degradation of glycine causes precipitates (renal stones) with excess calcium ions in the kidneys? A. Serine B. Glycine C. Oxalate D. Ammonia E. Glyoxylate

Table 4

  1. Which of the following is NOT a byproduct of the bacterial digestion of undigested bers? A. Lactate B. Acetic Acid C. Hydrogen gas D. Sulfuric acid E. Methane gas Table 5

E. Alanine

  1. Which of the following molecules is a byproduct of hemoglobin degradation that can be excreted as glucuronides via the intestines or the kidneys? A. Iron B. Amino acids C. Bilirubin D. Alpha chains E. Beta chains

Table 8

  1. Which of the following organs is the main site for the urea cycle? A. Lungs B. Kidneys C. Liver D. Intestines E. Brain Table 9