Unit 1

Question 1

The physiology of our organs is derived from

Answer 1

our specialized organs
(cardiac, skeletal, etc)

Question 2

plasma membrane isolates the cell and keeps

Answer 2

it concentrated

Question 3

the plasma membrane also commun

Answer 3

with exterior of cell - get nutrient and secrete waste

Question 4

the plasma membrane is composed of -
that contain -

Answer 4

phospholipids
polar (phosphate) and nonpolar (fatty acid) component - amphipathic

Question 5

the plasma membrane is a double layer of phospholipids that contain

Answer 5

peripheral (bound to one layer) and integral proteins

Question 6

what contains carbohydrates like glycoproteins and glycolipids?

Answer 6

the plasma membrane (PM)

Question 7

the PM is a -
that has -

Answer 7

fluid mosaic - phospholipids and proteins move laterally
raft domains - high concent proteins

Question 8

the PM is a

Answer 8

barrier - molecules and ions can pass

Question 9

bulk transported is possible thru

Answer 9

endocytosis

Question 10

Phagocytosis is a form of -
where cells form -

Answer 10

endocytosis
pseudopods that engulf particles (protrusion in membrane)

Question 11

what is non-specific and performed by certain cells (immune system)

Answer 11

pinocytosis

Question 12

receptor mediated endocytosis occurs only in - when they bind to - and causes formation of -

Answer 12

specific molecules
receptors at cell surface
vesicles

Question 13

where can viruses hijack?

Answer 13

The endocytic pathway (binds to receptors to get in vesicles)

Question 14

During exocytosis what fuses with the plasma membrane?

Answer 14

transport vesicle

Question 15

in exocytosis, molecules and proteins are destined for export are

Answer 15

packaged at the Golgi apparatus

Question 16

cellular products from the ER are transferred

Answer 16

to the Golgi apparatus - they become secretory vesicles

Question 17

what takes place only in specialized secretory cells

Answer 17

regulated exocytosis

Question 18

in regulated exocytosis vesicles

Answer 18

don’t fuse with PM until they receive an appropriate signal

Question 19

the extracellular enviro is
and contains -

Answer 19

every constituent outside of the cells
interstitial fluid

Question 20

The extracellular enviro is supported by -
and forms the -

Answer 20

collagen and elastin
ECM

Question 21

Fibroblasts secrete and reside in the
and the Fibroblasts + ECM =

Answer 21

ECM
connective tissue

Question 22

selectively permeable is known as

Answer 22

some molecules pass and others don’t

Question 23

Diffusion is the movement of molec from

Answer 23

higher concent to lower

Question 24

net diffusion is

Answer 24

movement from region of higher concent to lower

Question 25

the rate of diffusion through a membrane =

Answer 25

number of molecules diffusing per unit of time.

Question 26

rate of diffusion depends on four factors -

Answer 26

1. The magnitude of the concentration difference across the membrane 2. The permeability of the membrane 3. The temperature of the solution 4. The surface area of the membrane

Question 27

small, nonpolar molec

Answer 27

can pass thru the plasma membrane

Question 28

Non-carrier-mediated transport involves

Answer 28

Nonpolar molecule

Question 29

carrier-mediated transport involves

Answer 29

ions

Question 30

carrier-mediated transport use - that allowing simple diffusion of water molecules

Answer 30

aquaporins (channels)

Question 31

carrier-mediated transport can be

Answer 31

passive or active