Bio101

Cell Boundaries and Transport 32 terms by bcaan

STUDY

Flashcards

Learn

Speller

Test

PLAY

Scatter

Gravity

Like this study set? Create a free account to save it.

List

Scores

Info

Upgrade to remove ads

In Chapter 4 we learned about the structure of the cell membrane and how this structure allows for passive and active transport of substances that the cell needs to move both in and out of the cell.

Original Alphabetical

What are three functions of cell membranes?

allows for movement of substances in and out of the cell

communication

protection

What is the main function of the cell wall?

structure and support

Identify the parts of the cell membrane-

A is a phospholipid molecule

A1 is the phosphate head

A2 is the lipid tail

Identify the parts of the cell membrane

A

A1

A2

A1 is hydrophilic (points inside and outside cell near water)

A2 is hydrophobic (tucked inside the membrane because lipids do not mix with water)

Which part of A is hydrophobic (water fearing) and which is hydrophilic (water loving)?

lipid bilayer (two layers, like a sandwich with two pieces of bread and jelly stuck in the middle)

What is H showing?

C is a protein with a carbohydrate attached that functions in identification of the cell (so no other cells come and attack it because it will be recognized as you!)

What is C and D in the membrane? What is the function of this structure?

G is a protein channel used for diffusion (no energy required to move through)

What is shown by letter G? What type of transport is occurring through this structure?

E is showing cholesterol and adds structure to the membrane

What is shown by structure E? What is this molecule's function?

What do you know about diffusion?

(include what moves by this method, is energy required or not, and from what concentration to what concentration does movement occur)

Diffusion is the movement of any substance through a selectively permeable...