《生物化学》课程PPT教学课件（英文版）Chapter 11 Biomembranes and Transport Across Biomembranes

Chapter 11 Biomembranes and Transport Across Biomembranes

Chapter 11 Biomembranes and Transport Across Biomembranes

(b) d) e

A cell body (a)

A cell body

A celium (b)

A celium

mitochondrion (c)

mitochondrion

a digestive vacuole 多 (d)

A digestive vacuole

The endoplasmic reticulum 球 (e)

The endoplasmic reticulum

A secretory vesicle (f)

A secretory vesicle

1. Biomembranes are organized, sheetlike assemblies consisting mainly of proteins and lipids 1.1 The functions carried out by membranes are diverse and indispensable for life 1.1.1 Biomembranes give cells their individuality by separating them from the environment。 1.1.2 Biomembranes are highly selective permeability barriers with specific protein channels and pumps regulating the molecular and ionic compositions of the intracellular medium(transport across membranes)

1. Biomembranes are organized, sheetlike assemblies consisting mainly of proteins and lipids 1.1 The functions carried out by membranes are diverse and indispensable for life. 1.1.1 Biomembranes give cells their individuality by separating them from the environment. 1.1.2 Biomembranes are highly selective permeability barriers with specific protein channels and pumps regulating the molecular and ionic compositions of the intracellular medium (transport across membranes)

1.1. 3 Biomembranes control the flow of information between cells and their environment through specific receptors on the plasma membrane (signal transduction). 1. 1. 4 Eukaryotic cells have an extensive various compartments(forming differer ato internal membrane system dividing cells i organelles)

1.1.3 Biomembranes control the flow of information between cells and their environment through specific receptors on the plasma membrane (signal transduction). 1.1.4 Eukaryotic cells have an extensive internal membrane system dividing cells into various compartments (forming different organelles)