TOPIC FIVE= CELL MEMBRANES

Question 1

PLASMA MEMBRANE FUNCTIONS? (4)

Answer 1

BARRIER
DYNAMIC STRUCTURE
SELECTIVE PERMABILITY
TRANSPORT PROTEINS TO CONTROL PASSAGE

Question 2

PHOSPHOLIPIDS?

Answer 2

HYDROPHILLIAC HEAD AND HYDROPHOBIC TAIL
CREATE A BILAYER

Question 3

WHAT AFFECTS MEMBRANE FLUIDITY? (3)

Answer 3

TEMP
CHLOROSTEROL
FATTY ACID

Question 4

SATURATED FATTY ACID IN FLUID?

Answer 4

STRAIGHT TAILS ALLOW TIGHTER PACKING SO SOLID AT LOW TEMP

Question 5

UNSATURATED FATTY ACID?

Answer 5

KINKED TAILS SO LOOSER AND LIQUID AT LOW

Question 6

CHOLESTEROL AS BUFFER?

Answer 6

WARM TEMPS= RESTRAINS MOVEMENT
LOW TEMPS= PREVENTS TIGHT PACKING

Question 7

FLUID MOSIAC MODEL?

Answer 7

COLLECTIONS OF MULT DIFF PROTEINS EMBEDDED IN LIPID BILAYER, MADE OF PHOSPHOLIPIDS AND PROTEINS

Question 8

INTEGRAL PROTEIN?

Answer 8

INSIDE BILAYER INCLUDES TRANSMEMBRANE PROTEINS
MADE OF AMINO ACID

Question 9

PERIPHERAL PROTEIN?

Answer 9

BOUND TO SURFACE
ATTACHED TO CYTOSKELETON OR FOR CELL RECOGNITION

Question 10

FUNCTIONS OF CELL SURFACE MEMBRANE PROTEINS? (6)

Answer 10

1. SURFACE TRANSDUCTION
2. TRANSPORT
3. ATTACHMENT TO CYTOSKELETON AND ECM
4. CELL TO CELL RECOGNITION
5. INTERCELLUAR JOINING
6. ENZYMATIC ACTIVITY

Question 11

GLYCOCALYX?

Answer 11

CARBO OUTSIDE CELL COVALENTLY BOUNDED (GLYCOLIPIDS AND GLYCOPROTEINS)

Question 12

HOW IS THE MEMBRANE BUILT?

Answer 12

GOLGI APPARATUS AND ER

Question 13

TRANSPORT PROTEINS?

Answer 13

DOOR TO CELL, ALLOW PASSAGE ACROSS MEMBRANE

Question 14

CHANNEL PROTEIN?

Answer 14

FACILIATATED DIFFUSION, TUNNEL FOR STUFF TO TRAVEL DOWN

Question 15

CARRIER PROTEIN?

Answer 15

BIND TO MOLECULES AND CHANGE THEIR SHAPE TO MOVE THEM. REQUIRE ENERGY

Question 16

OSMOSIS?

Answer 16

DIFFUSION OF WATER, LOW TO HIGH

Question 17

ANIMAL CELLS MUST HAVE…
PLANT CELLS MUST HAVE..

Answer 17

ISOTONIC
HYPOTONIC

Question 18

TONCITY?

Answer 18

ABILITY OF SURROUNDING SOLUTION TO CAUSE CELL TO LOSE/GAIN WATER

Question 19

ACTION POTENTIAL?

Answer 19

RAPID SEQUENCE OF CHANGE

Question 20

COTRANSPORTERS?

Answer 20

WHEN ACTIVE TRANSPORT OF ONE THING INDIRECTLY CAUSES TRANSPORT OF ANOTHER THING

Question 21

BULK TRANSPORT?

Answer 21

LARGER MOLECULES, REQUIRES ENERGY TO WORK

Question 22

EXOCYTOSIS?

Answer 22

EXPELLING CONTENTS BY FUSING TO MEMBRANE AND RELEASING CONTENTS OUTSIDE

Question 23

PHAGOCYTOSIS?

Answer 23

CELL EATING
CELL ENGULFS PARTICLE IN VACUOLE THAT TAKES IT TO LYSOSOME

Question 24

PINOCYTOSIS?

Answer 24

CELL DRINKING
MOLECULES DISSOLVED IN DROPLET GULPED INTO VESICLE

Question 25

RECEPTOR MEDIATED?

Answer 25

BINDING OF SOMETHING CAUSES VESICLE FORMATION AND CAUSES STUFF TO BE TRANSPORTED, AFTER THIS RECEPTORS ARE BACK IN PLASMA MEMBRANE