GI6

Question 1

substances move ___ their electrochemical gradients

Answer 1

down

Question 2

charged substances move ____ opposite charges

Answer 2

toward

Question 3

what kind of transport does the GLUT5 use?

Answer 3

passive diffusion

Question 4

what kind of transport does SGLT1 use.

Answer 4

secondary active transport

Question 5

what kind of transport does PEPT1 use?

Answer 5

tertiary active transport

Question 6

what is the Na+ gradient maintained by?

Answer 6

Na+/K+ ATPase

Question 7

what substances use secondary active transport?

Answer 7

glucose, galactose, amino acids

Question 8

the membrane potential is kept ____ inside relative to outside.

Answer 8

negative

Question 9

Na+/K+ ATPase uses what kind of transport?

Answer 9

primary active transport

Question 10

GLUT2 uses what kind of transport?

Answer 10

facilitated diffusion, uniporter

Question 11

how is K+ absorbed in the ileum?

Answer 11

paracellular diffusion

Question 12

what are the 4 steps of digestion and absorption of fats?

Answer 12

1. emulsification
2. hydrolysis
3. micelle formation
4. absorption

Question 13

what are micelles?

Answer 13

products of lipid hydrolysis

Question 14

what are chylomicrons?

Answer 14

polar surface lipids, embedded in protein

Question 15

when does gut closure typically occur in neonates?

Answer 15

24 hours

Question 16

diarrhea occurs when:

Answer 16

there is a mismatch between secretion and absorption