CONCEPT 2: ANALYZING THE
STRUCTURE AND FUNCTION
OF THE CELL MEMBRANE
Chapter 7 in Campbell
Pg. 53-58, 294-296 in Holtzclaw
Practice Questions: #1-12, p 70-71; #1, 4, 6 p. 74/75;
1-2 p. 296 Holtz
All Concept Checkpoints (Ch 7), #1-9 p. 141 Campbell
ANALYZING THE STRUCTURE AND
FUNCTION OF THE CELL MEMBRANE

You must know:
Why membranes are selectively permeable.
 The role of phospholipids, proteins, and
carbohydrates in membranes.
 How water will move if a cell is placed in an
isotonic, hypertonic, or hypotonic solution and
be able to predict the effect of different environments
on the organism
 How electrical gradients are
formed and their function in cells

LAB: DIFFUSION AND OSMOSIS

Analysing your data with Standard Error of the
Mean Calculations (SEM)
1. Compute the square of the difference between each value and
the sample mean.
2. Add those values up.
3. Divide the sum by N-1. (This is called the variance.)
4. Take the square root to obtain the Standard Deviation (SD)
5. The Standard Error of the Mean (SEM) is calculated by dividing
the SD by the square root of N.
1. Compute the square of the difference between each value and
the sample mean.
2. Add those values up.
3. Divide the sum by N-1. (This is called the variance.)
4. Take the square root to obtain the Standard Deviation (SD)
5. The Standard Error of the Mean (SEM) is calculated by dividing
the SD by the square root of N.
1. Compute the square of the difference between each value and
the sample mean.
2. Add those values up.
3. Divide the sum by N-1. (This is called the variance.)
4. Take the square root to obtain the Standard Deviation (SD)
5. The Standard Error of the Mean (SEM) is calculated by dividing
the SD by the square root of N.
1. Compute the square of the difference between each value and
the sample mean.
2. Add those values up.
3. Divide the sum by N-1. (This is called the variance.)
4. Take the square root to obtain the Standard Deviation (SD)
5. The Standard Error of the Mean (SEM) is calculated by dividing
the SD by the square root of N.

TRY THIS!
Describe the change in genetic
variation of population between 0
and 6 months and provide reasoning
based on the means and SEM.

TRY THIS!
Describe the change in genetic
variation of population between 0
and 6 months and provide reasoning
based on the means and SEM.
ANALYZING THE STRUCTURE AND
FUNCTION OF THE CELL MEMBRANE

You must know:
Why membranes are selectively permeable.
 The role of phospholipids, proteins, and
carbohydrates in membranes.
 How water will move if a cell is placed in an
isotonic, hypertonic, or hypotonic solution and
be able to predict the effect of different environments
on the organism
 How electrical gradients are
formed and their function in cells

What is the role of phospholipids, proteins, and
carbohydrates in membranes?

Proteins

Many
different
functions
How electrical gradients are formed?

You need to know the following terms:








Active transport
Sodium-potassium pump
Membrane potential
Electrochemical gradient
Electrogenic pump
Cotransport
Exocytosis
Endocytosis
Phagocytosis
 Pinocytosis
 Receptor-mediated endocytosis

ACT OUT!
Exocytosis
 Endocytosis
 Simple Diffusion
 Facilitated Diffusion with a Channel Protein
 Active Transport with a Carrier Protein

Ex: transport of glucose from the filtrate in kidney
tubules back to blood
 Ex: sodium-potassium pump working in neurons
(nerve cells) to create an electrochemical gradient
 Ex: cotransport

CONCEPT 2: ANALYZING THE
STRUCTURE AND FUNCTION
OF THE CELL MEMBRANE
Chapter 7 in Campbell
Pg. 53-58, 294-296 in Holtzclaw
Practice Questions: #1-12, p 70-71; #1, 4, 6 p. 74/75;
1-2 p. 296 Holtz
All Concept Checkpoints (Ch 7), #1-9 p. 141 Campbell