Chapter 5 -2

Question 1

What is exoctyosis in membrane trafficking?

Answer 1

exocytic vesicles fuse with PM

Question 2

What is endocytosis in membrane trafficking?

Answer 2

endocytic vesicule forms as PM folds inward

Question 3

What are the 3 types of endocytosis?

Answer 3

Phagocytosis- cellular eating
Pinocytosis - cellular drinking
Receptor mediated endocytosis - highly specific

Question 4

What is an example of receptor meditated endocytosis?

Answer 4

hypercholesterolemia

Question 5

What is hyperchloresterolemia?

Answer 5

receptor mediated endocytosis
genetic disorder where membranes lack
overload the blood with cholesterol

Question 6

What controls metabolism?

Answer 6

membranes

Question 7

What is metabolism?

Answer 7

sum of all chemical reactions within an organism

Question 8

What are the 2 different types of metabolic pathways?

Answer 8

Anabolism - build molecules

Catabolism - breakdown molecules

Question 9

What is kinetic energy?

Answer 9

energy in motion

Question 10

What is potential energy?

Answer 10

stored energy

Question 11

What is chemical energy?

Answer 11

potential energy stored in molecules

Question 12

What is thermal energy?

Answer 12

heat (random energy)

Question 13

What does the first law of thermodynamics state?

Answer 13

energy can not be created/destroyed only transferred/transformed

Question 14

What does the 2nd law of thermodynamics state

Answer 14

Natural tendency toward disorder

energy conversions are 100% efficient

Question 15

How do cells maximize energy use?

Answer 15

through energy coupling: combine 2 types of reactions