Chapter 5 -2 Flashcards Preview

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Flashcards in Chapter 5 -2 Deck (15):
1

What is exoctyosis in membrane trafficking?

exocytic vesicles fuse with PM

2

What is endocytosis in membrane trafficking?

endocytic vesicule forms as PM folds inward

3

What are the 3 types of endocytosis?

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

4

What is an example of receptor meditated endocytosis?

hypercholesterolemia

5

What is hyperchloresterolemia?

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

6

What controls metabolism?

membranes

7

What is metabolism?

sum of all chemical reactions within an organism

8

What are the 2 different types of metabolic pathways?

Anabolism - build molecules
Catabolism - breakdown molecules

9

What is kinetic energy?

energy in motion

10

What is potential energy?

stored energy

11

What is chemical energy?

potential energy stored in molecules

12

What is thermal energy?

heat (random energy)

13

What does the first law of thermodynamics state?

energy can not be created/destroyed only transferred/transformed

14

What does the 2nd law of thermodynamics state

Natural tendency toward disorder
energy conversions are 100% efficient

15

How do cells maximize energy use?

through energy coupling: combine 2 types of reactions