CONCEPT 2: ANALYZING THE STRUCTURE AND FUNCTION OF THE CELL MEMBRANE

Chapter 7 in CampbellPg. 53-58, 294-296 in Holtzclaw

Practice Questions: #1-12, p 70-71; #1, 4, 6 p. 74/75; 1-2 p. 296 HoltzAll 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 CampbellPg. 53-58, 294-296 in Holtzclaw

Practice Questions: #1-12, p 70-71; #1, 4, 6 p. 74/75; 1-2 p. 296 HoltzAll Concept Checkpoints (Ch 7), #1-9 p. 141 Campbell