Cell Physiology

Question 1

Organelle for synthesis of proteins bound for cell membrane, lysosomes and outside of cell

Answer 1

rough endoplasmic reticulum

Question 2

Organelle for synthesis of proteins bound for cytoplasm and mitochondria

Answer 2

free-floating ribosomes

Question 3

Are proteosomes membrane-bound or not?

Answer 3

not membrane bound

Question 4

Synthesizes hyaluronic acid and chondroitin sulfate

Answer 4

Golgi apparatus

Question 5

only substance modified in rough endoplasmic reticulum and not Golgi apparatus

Answer 5

collagen

Question 6

Added to lysosome-bound proteins by Golgi apparatus

Answer 6

mannose-6-phosphate

Question 7

Microtublues: anterograde transport

Answer 7

kinesin

Question 8

Microtublues: retrograde transport

Answer 8

dynein

Question 9

exclusive biochemical pathways in mitochondria:

Answer 9

beta-oxidation, TCA cycle

Question 10

back and forth waving

Answer 10

cilia

Question 11

propeller or quasi-sinusoidal motion

Answer 11

flagella

Question 12

Junctional complexes:
Divides cell into apical side and basolateral side
A. macula adherens (desmosomes)
B. zonula adherens (fascia adherens)
C. zonula occludens (tight junctions)
D. gap junctions

Answer 12

Zonula ocludens (tight junctions)

Question 13

Junctional complexes:
For intercellular communication
A. macula adherens (desmosomes)
B. zonula adherens (fascia adherens)
C. zonula occludens (tight junctions)
D. gap junctions

Answer 13

Gap junctions

Question 14

Junctional complexes:
For firm intercellular adhesions
A. macula adherens (desmosomes)
B. zonula adherens (fascia adherens)
C. zonula occludens (tight junctions)
D. gap junctions

Answer 14

Macula adheres (desmosomes)

Question 15

Junctional complexes:
Increases surface area for contact
A. macula adherens (desmosomes)
B. zonula adherens (fascia adherens)
C. zonula occludens (tight junctions)
D. gap junctions

Answer 15

Zonula adherens (fascia adherens)

Question 16

Functional unit of the gap junction

Answer 16

Connexon

Question 17

Most abundant component of the cell membrane

Answer 17

Proteins

Question 18

Glycolipid that anchors proteins to outer leaflet

Answer 18

Glyocyslphosphatidylinositol (GPI)

Question 19

Electrostatic interactions: integral or peripheral proteins?

Answer 19

Peripheral proteins

Question 20

Hydrophobic interactions: integral or peripheral proteins

Answer 20

Integral proteins

Question 21

Important protein in phagocytosis

Answer 21

Clathrin

Question 22

Important protein in exocytosis

Answer 22

SNARE proteins

Question 23

Body fluid compartment: inulin
A. total body water
B. extracellular fluid
C. plasma

Answer 23

extracellular fluid

Question 24

Body fluid compartment: deuterium oxide
A. total body water
B. extracellular fluid
C. plasma

Answer 24

total body water

Question 25

Body fluid compartment: 124-I-labeled albumin
A. total body water
B. extracellular fluid
C. plasma

Answer 25

plasma

Question 26

Body fluid compartment: antipyrine
A. total body water
B. extracellular fluid
C. plasma

Answer 26

total body water

Question 27

Body fluid compartment: mannitol
A. total body water
B. extracellular fluid
C. plasma

Answer 27

extracellular fluid

Question 28

An effective osmole is a PERMEANT/IMPERMEANT solute?

Answer 28

impermeant solute

Question 29

Ca-ATPase pump in sarcoplasmic reticulum and endoplasmic reticulum

Answer 29

SERCA

Question 30

CA-ATPase pump in cell membrane

Answer 30

PMCA

Question 31

In all epithelial cells, Na-K-ATPase pump is found in the basolateral side except

Answer 31

choroid plexus

Question 32

Reflection coefficient = 0

Answer 32

Permeable

Inefficient

Question 33

Reflection coefficient = 1

Answer 33

Impermeable

Efficient

Question 34

Will changing the concentration difference change the permeability?

Answer 34

No. Only flux. Flux = permeability x concentration difference