EOU Exam on Thursday, May 1st

Lesson 5

Diffusion Through the Cell Membrane

Learning Intention

Students will be able to discover key concepts of diffusion through experiments and apply their discoveries to the function of the cell membrane.

Success Criteria

Discuss how a semi-permeable membrane works
Observe and make inferences during two experiments.
Apply my knowledge to a cell structure.
Revise my knowledge of how a cell membrane works

Reminders:

1) Tutoring in A-301 every Thursday

2) Vocabulary Quiz on Thursday 10/10.

Agenda

Activity 1: Something Looks Sus Warm-Up

Activity 2: Turn n' Talk #1

Activity 3: Reading

Activity 4: Mid-Point Check

Activity 5: Stop n'Jot

Activity 6: Create a Graph

NGSS Standard

Each cell is covered by a membrane that performs a number of important functions for the cell. These include: separation from its outside environment, controlling which molecules enter and leave the cell, and recognition of chemical signals. The processes of diffusion and active transport are important in the movement of materials in and out of cells. (1.2g)

Part #1

Something Looks Sus'

Warm-Up

sc1 (10 min)

Problem #1

Identify one substance that the blood transports to organs and tissues of the body and explain why this substance is necessary for organ and tissues to continue to function.

Problem #2

Organ systems of the human body interact to maintain a balanced internal environment. As blood flows through certain organs of the body, the compositon of the blood changes because of interactions with those organs. State one change in the compositon of the blood as it flows through the digestive system.

Problem #3

Pulse rate is measured in beats per minute (BPM). Individual A has a resting pulse rate of 64 bpm. Individual B has a resting pulse rate of 82 bpm. Identify TWO reasons why the pulse rates of both of these individuals could be considered normal.

Answer #1

Oxygen is necessary so that cells that make up tissues can create energy.

Answer #2

As the blood flows through the body, the amount of oxygen will increase so that cells can create energy.

Answer #3

1) They have different body types.

2) They might be a different sex.

Part #2

Turn n'Talk #1

sc 2 - (5 min)

Activity 3

Reading

sc3- (5 min)

Directions: As you read, take notes about diffusion in your medical Journal. You will have to summarize this reading to the A.I. to prove you can move on to the next experiment.