Transport Lab (4) Flashcards

1
Q

Plasma Membrane

A

selectively controls what enters and exits the cell to maintain homeostasis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Cell Membrane

A

the Fluid Mosaic Model (Phospholipid Bilayer)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Fluid Mosaic Model

A

model that describes arrangement and movement of molecules that make up the cell membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Peripheral Proteins

A

proteins of membrane that are not embedded in the lipid bilayer

loosely bound to the surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Integral Proteins

A

proteins that are permanently attached to the membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How do integral proteins stay anchored?

A

amino acids on the top and bottom of the membrane and they have a lipophobic R group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Transmembrane Protein

A

spans the entirety of the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Passive Transport

A

does not need energy to move solute from a high concentration region to a low concentration region:
simple diffusion
facilitated diffusion
osmosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Active Transport

A

needs energy to move solute against concentration gradient:
transport pumps
endocytosis
exocytosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Simple Diffusion

A

movement of solute from a high concentration to a low concentration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Facilitated Diffusion

A

use channel proteins to move molecules that cannot freely cross the cell membrane from a high concentration to a low concentration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Osmosis

A

diffusion of solvent molecules through a selectively permeable membrane from a high water potential to a low water potential region

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Transport Pumps

A

they move ions or molecules against their concentration gradient

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Exocytosis

A

energy required process in which substances are released outside the cell

exit the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Endocytosis

A

energy required process in which they intake substances into the cell

enter the cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Phagocytosis

A

process of endocytosis involving engulfing matter/food into the cell

17
Q

Pinocytosis

A

process of endocytosis involving engulfing waste/liquid into the cell

18
Q

Isotonic

A

equal amount of water entering and leaving the cell

19
Q

Hypertonic

A

shirinked cell

water is leaving the cell due to the high concentration of solutes outside the cell

20
Q

Hypotonic

A

swollen cell

water is entering the cell due to high concentration of solutes inside the cell

21
Q

How does distance effect rate of diffusion?

A

if the distance is small, the diffusion happens faster because the particles do not have a large distance to travel

22
Q

How does solubility effect rate of diffusion?

A

as the concentration gradient increases, rate of diffusion increases

as the concentration gradient decreases, rate of diffusion decreases

23
Q

How does temperature effect rate of diffusion?

A

the higher the temperature, the higher rate of diffusion

the lower the temperature, the lower rate of diffusion

24
Q

How does molecular weight effect rate of diffusion?

A

the high molecular weight, the lower rate of diffusion

the lower molecular weight, the higher rate of diffusion

25
Q

Agar Plate

A

in the center a drop of Silver Nitrate was added to the center of the plate because Ag+ will create precipitation bonds with the negative ions which enables measurement of rates of diffusion

1cm to the right of the center 2 drops of NaCl was added so the Ag+ can react with Cl-

1cm to the left of the center 2 drops of KBr was added so the Ag+ can react with Br-

1cm to the bottom of the center 2 drops of Fe(CN) was added so Ag+ can react with CN-3

26
Q

What is the molecular weight of Ferrincyanide? CN-3

27
Q

What is the molecular weight of Chloride? Cl-

28
Q

What is the molecular weight of Bromide? Br-

29
Q

How do you calculate rate of diffusion?

A

square root of 1 / Molecular Weight

lowest product will be divided and quotient of that is the rate

ex:
CN- 0.068/0.068= 1
Br- 0.11/0.068= 1.6
Cl- 0.17/0.068= 2.5 `

30
Q

Dialysis Tubing

A

semipermeable made of cellulose acetate

process of the removal of small molecular weight solutes from a solution

31
Q

Was the dialysis tube permeable to starch?

32
Q

Was the dialysis tube permeable to glucose?

33
Q

Was the dialysis tube permeable to albumin?

34
Q

Was the dialysis tube permeable to iodine?

35
Q

What net movement occured in the dialysis tubing?

A

there was a net movement of water into the dialysis tubing