Membrane Transport

Question 1

The cation in high concentration in the extracellular fluid is?

Answer 1

Na+ (Sodium)

Question 2

Substances moving between the plasma and interstitial fluid must cross the__________?

Answer 2

Capillary wall

Question 3

The cell membrane contains______where some traverse the cell membrane and act as channels, while some do not traverse and act as receptors or enzymes.

Answer 3

Proteins

Question 4

The transport mechanism described as the random molecular movement of molecules is called______?

Answer 4

Simple Diffusion

Question 5

The transport mechanism which requires energy and moves substances against the concentration gradient is______?

Answer 5

Active Transport

Question 6

What are the two factors that are indirectly proportional with the rate of diffusion in the Fick’s Law?

Answer 6

MW (Molecular Weight) & Membrane Thickness

Question 7

_____is the net diffusion of water.

Answer 7

Osmosis

Question 8

The normal osmolality of ECF and ICF is ____milliosmoles per kilogram of water.

Answer 8

300

Question 9

______solutions, water diffuses out of the cells and the cells shrink or undergo plasmolysis.

Answer 9

Hypertonic

Question 10

2/3 of the total body water volume. Material moving into and out of the ICF must across the cell membrane.

Answer 10

Intracellular Fluid

Question 11

1/3 of the body fluid volume.

Answer 11

Extracellular Fluid

Question 12

Lies between the circulatory system and the cells, is 75% of the ECF volume.

Answer 12

Interstitial Fluid

Question 13

The liquid matrix of blood, is 25% of the ECF volume.

Answer 13

Plasma

Question 14

What are the function of the Cell Membrane?

Answer 14

Selective Transport
Cell Recognition
Cell Communication
Tissue Organization
Enzymatic Activity
Cell Shape Determination

Question 15

A Molecules into and out of the cell

Answer 15

Selective Transport

Question 16

Via surface antigens

Answer 16

Cell Recognition

Question 17

Via neurotransmitters, hormone receptors and signal transduction pathway.

Answer 17

Cell Communication

Question 18

Via cell Junction and cell adhesion molecules.

Answer 18

Tissue Organization

Question 19

ATP

Answer 19

Enzymatic activity

Question 20

Via cytoskeleton

Answer 20

Cell shape determination

Question 21

Uses a specific carrier protein.

Answer 21

Facilitated Diffusion

Question 22

What are the Characteristics of protein carriers?

Answer 22

Specificity
Saturation
Transport Maximum (Tm)
Competition

Question 23

Osmoles for KILOGRAM of solution.

Answer 23

OSMOLALITY

Question 24

Osmoles per LITER of solution more practical…

Answer 24

OSMOLARITY

Question 25

Effect that the solution has on cell volume.

Answer 25

TONICITY

Question 26

Another term for Hypertonic.

Answer 26

Plasmolysis

Question 27

Another term for Hypotonic.

Answer 27

Cytolysis

Question 28

What are the Active Transport?

Answer 28

Sodium ions Potassium ions Calcium ions Iron ions Hydrogen ions Chloride ions Iodine ions Urate ions Several diff sugars Most of amino acids

Question 29

Types according to the source of energy?

Answer 29

Primary Active Transport Secondary Active Transport