Body Fluid, Plasma Membrane

Question 1

Total body water varies with

Answer 1

Age
Degree of obesity
Gender
Disease

Question 2

Least hydrated tissue in the body

Answer 2

Adipose tissue

Question 3

Total body water (%) of adults

Answer 3

60% of body weight

Question 4

Total body water (%) in infants

Answer 4

73% of body weight

Question 5

Total body water (%) in old age

Answer 5

45% of body weight

Question 6

TBW (%) in men

Answer 6

55-60%

Question 7

TBW (%) in young women

Answer 7

45-50%

Question 8

% of water in a fat-free tissue is constant at

Answer 8

73%

Question 9

Ions in ICF

Answer 9

K
Mg
Phosphate and organic anions
Proteins

Question 10

Ions in ECF

Answer 10

Na
Cl
Bicarbonate

Question 11

What is the only compartment that declines with age

Answer 11

Interstitial fluid

Question 12

Examples of transcellular fluid

Answer 12

Aqueous humor
CSF
GIT fluids
Serous fluids
Joint fluid
Pericardial and peritoneal fluid

Question 13

What fluid is contained within epithelial lined spaces and is outside of the normal compartments

Answer 13

Transcellular fluid

Question 14

TBW is measured with

Answer 14

Tritium oxide and deuterium oxide

Question 15

ECF volume is measured with

Answer 15

Insulin
Mannitol
Sucrose
Radioactive isotopes

Question 16

Plasma volume is measured by

Answer 16

Risa

Question 17

Which volume cannot be measured directly

Answer 17

Interstitial volume

Question 18

Difference between ECF and plasma volume

Answer 18

Interstitial volume

Question 19

Difference between TBW and ECF

Answer 19

ICF

Question 20

Contains both ECF and ICF

Answer 20

Blood volume

Question 21

If plasma volume is 3 liters and hematocrit is 0.40, total blood volume would be calculated as

Answer 21

5 liters
Total blood volume = Plasma volume/1-hematocrit

Question 22

What are the major classes of lipid molecules

Answer 22

Glycolipids
Cholesterol
Phospholipids

Question 23

What is the main component of the lipid bilayer

Answer 23

Phospholipids

Question 24

The phospholipid membrane is held by what forces

Answer 24

Non-covalent interactions of hydrophobic tails

Question 25

What are the four major groups of phospholipids which make up the plasma membrane

Answer 25

Phosphatidylcholine Phosphatidylethanolamine Phosphatidylserine Sphingomyeline Phosphatidylinositols are present in small quantities

Question 26

What keeps the membrane fluid at temperatures conducive to life

Answer 26

The right ratio of saturated to unsaturated fatty acids

Question 27

Membrane proteins are classified into

Answer 27

Integral and peripheral proteins

Question 28

They are integral proteins which are only embedded into one side of the cell membrane

Answer 28

Monotopic proteins

Question 29

They are integral proteins which have hydrophobic regions that completely span the hydrophobic interior of the membrane

Answer 29

Transmembrane proteins

Question 30

Examples of integral proteins

Answer 30

Transmembrane proteins Monotopic proteins

Question 31

What membrane protein binds to lipids or other integral proteins

Answer 31

Peripheral proteins

Question 32

They are not embedded in the lipid bilayer

Answer 32

Peripheral proteins

Question 33

Functions of plasma membrane proteins

Answer 33

Channels Carrier proteins Receptors Enzymes CAM - desmosomes, gap junctions, tight junctions Antigens Surface recognition Cytoskeleton contact

Question 34

Is the plasma membrane symmetrical

Answer 34

No it is asymmetrical Meaning the cell membrane tends to have different composition on one side of the membrane than on the other side *The apical, lateral and basal surfaces of the cell membrane having different functions*

Question 35

Contents of the cell membrane

Answer 35

Carbohydrates Proteins Phospholipids

Question 36

What can be used to remove peripheral proteins

Answer 36

Alkaline solutions or high salt

Question 37

Carbohydrates covalently binding to lipids are called

Answer 37

Glycolipids

Question 38

True or false Carbohydrates bind with proteins They also bind with lipids

Answer 38

T

Question 39

Loose coat on the membrane formed by carbohydrates are called

Answer 39

Glycocalyx