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Flashcards in Cell Physiology Deck (25)
1

Non polar carry what charge?

Positive and negative uniformly

2

what is the charge with nonpolar molecules

no net charge

3

non polar molecules readily dissolve in what? water or lipids?

lipids

4

are nonpolar molecules lipophillic or hydrophilic?

lipophilic and hydrophobic

5

what type of molecules have a region with a cluster of positive and a region with a cluster of negative charges?

Polar molecules

6

what is the charge of Polar molecules?

no net charge

7

are polar molecules lipophilic or hydophillic?

hydrophilic and lipophobic

8

O2 and Isoflurane are ex of nonpolar or polar molecules

nonpolar

no net charge

Lipophilic

9

glucose is an example of what what molecule nonpolar or polar?

polar

no net charge

hydrophilic 

10

do ions have a charge?

yes

11

do ions have a negative or positive charge?

both

12

what are negative ions called? give 2 examples

anions

HCO3-

Cl-

13

what are positive ions called? give examples. 

Cations

Na+

Ca++

K+

14

hydrophilic

 

water loving

water soluble

 

15

hydrophobic

water hating

lipid soluble

16

Lipophilic

lipid loving

lipid soluble

17

Lipophobic

lipid hating

water soluble

18

2 functions of lipid bylayer

  1. Serves as a barrier (to substances that are not small enough or not lipd soluble)
  2. Provides enviroment (in which membrane proteins can function)

19

Hydro_____ molecules (including IV and inhalation agents) and small uncharged polar molecules (H20 CO2) readily penetrate the lipid bylayer. 

phobic

20

Large uncharged polar molecules such as glucaise and ions (do or Do not) penetrate the lipid bylayer.

do not

21

Types of Receptors:

what 2 receptors control ion channels?

ligand-gated ion channel

Ionotropic receptors

22

Types of Receptors:

what are 4 ex of what a ligand is?

chemical 

Drug

neurotransmitter

hormone

23

Types of Receptors:

how do ligand or ionotropic receptors work?

when a ligand attaches to its receptor, the channel opens and substancs specific to that channel diffuse down their concentration gradients.

24

Types of Receptors: Ligand gated

for ex. at the NMJ ACh binds to the nicotinic receptor (nAChR) and th channel opens. what ions diffuse in and out?

 

Na+ in

Ca++ in

K+ out

 

25

Types of Receptors:

whata re 3 other ex of ligand gated receptors

5-HT3

GABAa

Glutamate

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