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Deck 1 > Cell membrane & its environment > Flashcards

Cell membrane & its environment Flashcards

1
Q

__% of human body is water

a) 20
b) 40
c) 60
d) 75

A

c

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2
Q

Intracellular fluid is __% of body weight

a) 20
b) 40
c) 60
d) 75

A

b

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3
Q

Plasma is __% of body weight

a) 5
b) 10
c) 12
d) 15

A

a

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4
Q

Which is an example of insensible water loss

a) stomach & intestine
b) skin & lungs

A

b

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5
Q

Blood clotting is a

a) neg feedback
b) positive feedback

A

b

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6
Q

Increase in one result to decrease of other

a) neg feedback
b) positive feedback

A

a

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7
Q

Which of the following is not function of plasma membrane

a) acts as a site of signal transduction
b) confers structural integrity
c) provides matrix for protein transport
d) none of the above

A

b

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8
Q

Makes both lipids and proteins more hydrophilic

a) cholestorol
b) lipids
c) carbohydrate
d) glucoe

A

c

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9
Q

Makes the membrane inpermeable to water and water soluble substance

a) cholestorol
b) lipids
c) carbohydrate
d) glucoe

A

b

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10
Q

The following are major types of lipids except

a) glycolipids
b) phospholipids
c) carbohydrate
d) cholesterol

A

c

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11
Q

Phospholipids has __ head and __ tail

a) hydrophobic-hydrophilic
b) hydrophobic-hydrophobi
c) hydrophil-hydrophobic
d) hydrophilic-hydrophilic

A

c

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12
Q

Makes membrane less permeable to small water soluble molecules

a) cholestorol
b) lipids
c) carbohydrate
d) glucoe

A

a

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13
Q

T/F: Not all membrane lipids are amphipatic only phospholipid and glycolipids

A

f

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14
Q

T/F Phospholipid bilayer are more stable than micelle

A

t

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15
Q

Phospholipids has __ head and __ tail

a) polar-non polar
b) non-polar-polar
c) polar-polar
d) nonpolar-non polar

A

a

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16
Q

Makes the cell more water friendly

a) carbohydrates
b) glycolipids
c) phospolipids
d) cholesterol

A

b

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17
Q

Very frequent phenomenon

a) lateral diffusion
b) rotation
c) flexion
d) flip flop

A

a

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18
Q

happens near the center of bilayer

a) lateral diffusion
b) rotation
c) flexion
d) flip flop

A

c

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19
Q

occurs in the long axis and very rapid

a) lateral diffusion
b) rotation
c) flexion
d) flip flop

A

b

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20
Q

explains cellular growth and expansion

a) lateral diffusion
b) rotation
c) flexion
d) flip flop

A

a

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21
Q

rare event, move from one monolayer to another

a) lateral diffusion
b) rotation
c) flexion
d) flip flop

A

d

22
Q

__ tends to slow down lateral mobility

a) carbohydrates
b) glycolipids
c) phospolipids
d) cholesterol

A

d

23
Q

Saturated FA form __ hydrocarbons; while unsaturated form __

a) straight - more viscious
b) straight -kink
c) kink -straight
d) kink -easier to pack

A

b

24
Q 
Functions of protein
E-
T-
R-
S-
P-
C-
A-
A 
enzyme
transport
receptor
structural
pumps
channel
antigens
25
Q

Which of the ff. type of protein is amphipatic?

a) integral protein
b) peripheral protein

A

a

26
Q

Associate w/ polar regions of the membrane

a) integral protein
b) peripheral protein

A

b

27
Q

T/F: Integral protein protein is anchored to two of the leaflets of the membrane

A

F

28
Q

T/F: Integral protein can not undergo flip flop motion

A

T

29
Q

Gangliosides are found in ___; galactocerebroside are foun in ___

a) myelin sheath- nerve cells & intestinal cells
b) nerve cells & intestinal-myelin sheath

A

b

30
Q

Which of the ff. is not the function of cytoskeleton:

a) permits cell motility
b) binding site for RNA and proteins
c) allows contraction in muscle cell
d) all of the above

A

d

31
Q

Form contractile rings during mitosis

a) actin
b) microtubules
c) intermediate filaments
d) microfilaments

A

a

32
Q

link together at z disk of myofibrils

a) actin
b) microtubules
c) intermediate filaments
d) microfilaments

A

c

33
Q

link dense bodies in smooth muscle

a) actin
b) microtubules
c) intermediate filaments
d) microfilaments

A

c

34
Q

made up of actin

a) actin
b) microtubules
c) intermediate filaments
d) microfilaments

A

d

35
Q

rapid assembly and disassembly

a) actin
b) microtubules
c) intermediate filaments
d) microfilaments

A

b

36
Q

chromosomal movement during meiosis and mitosis

a) actin
b) microtubules
c) intermediate filaments
d) microfilaments

A

b

37
Q

Microtubule assemble in __ and disassemble in ___

a) cold- warm
b) warm- cold

A

b

38
Q

Function of membrane junction, except:

a) cell communication
b) site between adjacent cell
c) structural integrity
d) cell adhesion

A

c

39
Q

Fasten cell to other cell:

a) zonula adherens
b) zonula occludens
c) macula adherens
d) hemidesmosomes

A

c

40
Q

Which of the ff is not an anchoring junction?

a) zonula adherens
b) zonula occludens
c) macula adherens
d) hemidesmosomes

A

b

41
Q

no extracellular space between cells, also known as paracellular gates

a) zonula adherens
b) zonula occludens
c) macula adherens
d) hemidesmosomes

A

b

42
Q

connect cell to basement membrane

a) zonula adherens
b) zonula occludens
c) macula adherens
d) hemidesmosomes

A

d

43
Q

Nexuses or gap junctions is

a) achoring
b) occluding
c) communicating

A

c

44
Q

serve to stabilize cell colonies

a) achoring
b) occluding
c) communicating

A

a

45
Q

important in growth and differentiation

a) achoring
b) occluding
c) communicating

A

c

46
Q

T/F: Both blood and bone has fluid ECM

A

F

47
Q

Functions of ECM except

a) allow cells to communicate
b) wound healing
c) remodels, degrades, and resynthesize
d) none of the above

A

a

48
Q

T/F: All types of membrane lipid is amphipatic

A

T

49
Q

T/F: All types of membrane protein is amphipatic

A

F

50
Q

Makes the membrane more hydorphilic

a) membrane lipid
b) membrane protien
c) membrane carbohydrate
d) cholesterol

A

c

51
Q

__ confers flexibility to the membrane

a) membrane lipid
b) membrane protien
c) membrane carbohydrate
d) cholesterol

A

d

52
Q

RBCs are able to squeeze in smallest cappilaries beause of

a) membrane lipid
b) membrane protien
c) membrane carbohydrate
d) cholesterol

A

a

Deck 1 (4 decks)

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