Flashcards in Introductory Lecture Deck (65)
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1
What is the main component of the cell membrane
proteins
2
What is the function of the cell membrane
divide intracellular and extracellular fluid compartments
3
Where is the sodium concentration low
intracellular fluid
4
Where is the potassium concentration low
extracellular fluid
5
Why do cells have a high level of phosphate in the intracellular fluid of the cell
ATP
6
What is an important function of calcium
secondary messenger
7
Where is calcium concentration low
intracellular fluid
8
What is sodium important for the function of
electrically excitable cells
9
Which ions concentration can vary between cell types
chloride
10
Which has more proteins - plasma or interstitial fluid
plasma
11
What is an important pH buffer
bicarbonate
12
What is a positively charged ion called
cation
13
Give examples of anions
phosphate, chloride, proteins and bicarbonate
14
Why is transport of solutes and ions important
critical for function of all cells
15
How many pathways of transport are there
3
16
What are the three pathways of transport
diffusion, transport proteins, and endocytosis
17
Example of simple diffusion
oxygen and carbon dioxide in the lungs
18
What do transport proteins move across the membrane
small molecules and ions
19
Name an example of exocytosis
release of neurotransmitters at the synapse
20
What are the three basic types of protein transporters
channel, carrier and pump
21
True or False - channels are NOT gated
false
22
Name an example of a carrier transporter
sodium glucose co transport protein
23
Name an example of a pump
sodium potassium ATPase
24
Which is a high energy transport protein - channels, carriers or pumps
Pumps
25
What allows pump transport proteins to function
hydrolysation of ATP
26
which transporters are passive
channels and carriers
27
What do channels and carriers require in order to work
driving force
28
What sets up the driving force for channels and carriers
sodium potassium ATPase
29
TRUE or FALSE - sodium moves against its electrochemical gradient into the cell
true
30
