Slide Set 3

Question 1

The plasma membrane is the boundary that separates the __ from its ____

Answer 1

cell from its surrounding environment

Question 2

The plasma membrane is____ (permeability)

Answer 2

Semi Permeable

Question 3

Phospholipids are the most ___ lipid in the ___ ___

Answer 3

abundant lipid in the Plasma membrane

Question 4

___ are amphipathic molecules, containing hydrophobic and hydrophilic regions

Answer 4

Phospholipids

Question 5

___ moves and outer phospholipid leaflet to the inner phospholipid leaflet

Answer 5

Flippase

Question 6

Flippase is the opposite of __

Answer 6

Floppase

Question 7

___ movers an inner phospholipid leaflet to the outer phospholipid lipid

Answer 7

Floppase

Question 8

Membranes must be ___ to function properly

Answer 8

fluid

Question 9

Ribosomes are made of

Answer 9

rRna and Ribosomal proteins

Question 10

rRna is made in the

Answer 10

Nucleolus

Question 11

Lipids determine the temp at which a ___ solidifies

Answer 11

membrane

Question 12

similarity between nuclear envelope and plasma membrane

Answer 12

Both lipid bilayer

Question 13

differences between plasma membrane and nuclear envelope

Answer 13

Nuclear envelope has pores
Nuclear envelope disappears in prometaphase

Question 14

membranes rich in ___ ___ ___ are more fluid that those rich in ___ ___ ___

Answer 14

unsaturated fatty acids, saturated fatty acids

Question 15

What is not a part of the endomembrane system?
a) nuclear envelope
b)lysosome
c)vacuole
d)Golgi apparatus
e) ER

Answer 15

The vacuole

Question 16

At warm temps, cholesterol ___ movement of phospholipids

Answer 16

restains

Question 17

At cool temps, Cholesterol ___ fluidity

Answer 17

maintains

Question 18

Peripheral proteins are __ embedded

Answer 18

not

Question 19

Integral proteins penetrate the ___ ___ and span the membrane

Answer 19

Hydrophobic core

Question 20

Transmembrane proteins are also known as ___

Answer 20

Integral proteins

Question 21

Fatty acid chains are located in the ___ of phospholipids

Answer 21

middle

Question 22

Saturated bonds are ___

Answer 22

Straight and single bonded

Question 23

Unsaturated bonds are ___

Answer 23

kinked and doubled bonded

Question 24

Unsaturated bonds or saturated bonds are more fluid?

Answer 24

Unsaturated bonds

Question 25

transport, enzymatic activity, signal transduction, cell-cell recognition, intercellular joining, and attachment to cytoskeleton are the ____

Answer 25

6 major functions of membrane proteins

Question 26

Osmotic Lysis

Answer 26

the process where a cell bursts due to an excessive influx of water

Question 27

Hypotonic, isotonic and Hypertonic

Answer 27

Hypo-too much (explodes), Iso-same, Hyper-not enough (shrivels)

Question 28

Diffusion and facilitated diffusion are types of __

Answer 28

passive transport

Question 29

Primary and secondary transport are forms of ___

Answer 29

active transport

Question 30

Active transport uses ___

Answer 30

energy (ATP)

Question 31

Antiporter transport

Answer 31

when two solutes swap places through a transport channel (one goes in one goes out)

Question 32

Passive transport

Answer 32

doesn't use energy (ATP)

Question 33

S phase is before ___ phase

Answer 33

G2

Question 34

Exocytosis vs endosytosis

Answer 34

endocytosis moves substances into the cell, while exocytosis moves them out.

Question 35

_______ is when the net movement in one direction equals the net movement in the opposite direction

Answer 35

Dynamic equilibrium

Question 36

facilitates the movement of a single solute across a cell membrane is a ___

Answer 36

Uniporter

Question 37

that transports two different molecules across a cell membrane in the same direction is a ____

Answer 37

Symporter

Question 38

2 duplicated paired homologous are

Answer 38

Bivalent or tetrads

Question 39

The tendency for molecules to spread out evenly into the available space

Answer 39

Osmosis

Question 40

Substances moving down the concentration on the gradient DOES or DOESNT use energy

Answer 40

Doesn't use energy

Question 41

diffusion of water across a selectively permeable membrane is __

Answer 41

Osmosis

Question 42

Direction of osmosis is determined by a

Answer 42

difference of concentration of a solute (salt sucks)

Question 43

water diffuses across a membrane from ___ concentration to ___ concentration

Answer 43

From low to high concentration

Question 44

the direction of water is critical to maintain the ____ of the cell

Answer 44

integrity

Question 45

Hypertonic animal cells?

Answer 45

Crenation

Question 46

Hypertonic plant cells

Answer 46

Plasmolysis

Question 47

Hypotonic plant cell

Answer 47

Turgor Pressure

Question 48

Hypotonic animal cells

Answer 48

Osmotic Lysis

Question 49

In ___ ____ transport proteins speed movement of molecules across the plasma membrane

Answer 49

Facilitated diffusion

Question 50

____ proteins provide corridors that allow specific molecules and ions to cross the membrane

Answer 50

Channel

Question 51

___ proteins undergo subtle changes in shape that that translocated the solute binding site across the membrane (open and close mechanism)

Answer 51

Carrier

Question 52

Active transport requires energy in the form of ___

Answer 52

ATP

Question 53

____ transportation moves against the concentration gradient

Answer 53

Active

Question 54

___ active transport- the energy is derived directly from the breakdown of adenosine triphosphate (ATP)

Answer 54

Primary

Question 55

___ active transport-uses an electrochemical gradient created by the other active transport

Answer 55

Secondary

Question 56

____ occurs when active transport of a solute indirectly drives transport of another solute

Answer 56

Cotransport

Question 57

____ molecules and water enter or leave the cell through the lipid bilayer or transport proteins

Answer 57

Small

Question 58

___ molecules, like polysaccharides and proteins, cross the membrane via vesicle mediated transport

Answer 58

Large

Question 59

an active process of moving materials from within a cell to the exterior of the cell

Answer 59

Exocytosis

Question 60

In exocytosis, ___ ___ migrate to the membrane, fuse with it, and release their contents

Answer 60

transport vesicles

Question 61

Many ___ cells use exocytosis to export products

Answer 61

secretory

Question 62

A active cellular process in which substances are brough into the cell

Answer 62

Endocytosis

Question 63

In endocytosis, the cell takes in _____ by forming ___ from the plasma membrane

Answer 63

macromolecules by forming vesicles

Question 64

Cell engulfs particle in a vacuole

Answer 64

Phagocytosis

Question 65

Extracellular fluids or small particles are ingested by the cell

Answer 65

Pinocytosis

Question 66

Phagocytosis- transport of ___ __/___ ___

Answer 66

entire cells/solid particles

Question 67

Pinocytosis- transport of ___/____ ___

Answer 67

Liquid/small particles

Question 68

Binding of ligands to receptors triggers vesicle formation

Answer 68

Receptor-mediated endocytosis

Question 69

Reception-mediated endocytosis- _____ transfer

Answer 69

Information