Lecture 5

Question 1

Fluid combination of phospholipids, cholesterol, proteins, and carbohydrates

Answer 1

Plasma membrane (represented in Fluid mosaic model)

Question 2

FMM: Main component of the membrane

Answer 2

Phospholipids

Question 3

FMM: Channels/pumps for transport; enzymes; structural attachment sites; cell recognitione

Answer 3

Proteins

Question 4

FMM: exterior surface; bound to
proteins (glycoproteins) or lipids (glycolipids);
function in cell to cell recognition

Answer 4

Carbohydrates

Question 5

FMM: Maintains fluidity and structure

Answer 5

Cholesterol

Question 6

PM: Does not require an output of energy and follows a concentration gradient when passing

Answer 6

Passive transport

Question 7

PM: Requires an input of energy to pass substances freely

Answer 7

Active transport

Question 8

Functions of Passive transport (3)

Answer 8

Free diffusion
Facilitated diffusion
Osmosis

Question 9

The movement of molecules from an area of high concentration to an area of low concentration

Answer 9

Diffusion