transporters

Question 1

where does the absorption of monosaccharides take place

Answer 1

lumen of the small intestine, involves brush border of epithelial cells

Question 2

monosaccharides are transported through the absorptive cells of the intestine by ________ and ________

Answer 2

• facilitated diffusion

- Na+ dependent facilitated transport (active transport)

Question 3

in the intestinal epithelial cells SGLT-1 transports _______ and _____

Answer 3

• glucose

- galactose

Question 4

in the kidney, _______ reabsorbs glucose by a _______ dependent glucose transporter

Answer 4

• SGLT-2

- sodium

Question 5

in facilitated diffusion, monosaccharide transport follows a concentration gradient _______ the use of ATP

Answer 5

without

Question 6

all ______ are transported from the intestinal epithelial cells into the portal of circulation by ______

Answer 6

• monosaccharides

- GLUT-2

Question 7

tissue distribution of GLUT-1

Answer 7

• red blood cells

- blood brain barriers

Question 8

tissue distribution of GLUT-2

Answer 8

• liver
• pancreatic beta cells
• contraluminal membrane of intestinal epithelial cells

Question 9

tissue distribution of GLUT-3

Answer 9

brain (neurons

Question 10

tissue distribution of GLUT-4

Answer 10

• adipose tissue
• skeletal muscle
• heart muscle

Question 11

tissue distribution of GLUT-5

Answer 11

• intestinal epithelial cells
• sperm
• fructose transporter

Question 12

which GLUT is insulin sensitive

Answer 12

GLUT-4

Question 13

which GLUT accepts all 3 monosaccharides

Answer 13

GLUT-2

Question 14

what GLUT is the major transporter in the CNS

Answer 14

GLUT 3

Question 15

tissue distribution of SGLT-1

Answer 15

intestinal epithelial cells

Question 16

tissue distribution of SGLT-2

Answer 16

kidney (tubular epithelial cells)

Question 17

which transporters are Na+ dependent

Answer 17

SGLT 1 and 2

Question 18

which transporters operate through facilitated diffusion

Answer 18

the GLUTs