Science - Lesson #6: Blood Transfusions

EOU Exam on Thursday, May 1st

Lesson # 6:

Blood Type and Transfusions

Learning Intention:

Students will be able to explain how blood cells have different types of antigens and humans have antibodies to some of them causing an immune response.

Success Criteria:

Describe how the immune system recognizes antigens by their shape.
Explain why blood types are important when receiving a transfusion.
Apply my knowledge of the immune system to practice questions regarding blood transfusions.

Standards:

HS-LS1-2: Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.

Reminders:

Immune System End of Unit Exam on Thursday, February 13th.
Practice Regents #2 due on Wednesday, February 12th.

Blood Type and Transfusions_ A Biology Lesson.wav

Something looks Sus'

Looping Warm-Up

(5 min)

Directions:

1) Identify which one is wrong.

2) Explain in detail why the students answer is wrong.

3) Fix their answer to make it correct.

Question #1

Question #2

Question #3

State one reason why there is less energy available at each trophic level, going from the first to third trophic level.

Student Response #1

When trees are cut down they do not make as much oxygen, so there is less oxygen for people to breath.

Student Response #2

As you increase in trophic level, only 10 percent of energy is carried to the trophic level above. The rest is lost as metabolic waste and heat.

Student Response #3

The human heart is constantly beating and therefore its cells need a lot more energy than skin cells. The mitochondria is where energy is made during the process of cellular respiration. Therefore, heart cells would have more mitochondria than skin cells, to supply the energy (ATP) the heart needs to function.

Part 2:

Turn n'Talk

(5 min)

Maria decided to get the genetically modified pig kidney transplant (xenotransplantion). The surgery was going well but half-way through, the doctors made a mistake and accidentally hit an artery. Maria started bleeding out on the operating table. The surgeons needed to get her blood fast!

Question:

Can the doctors just give her anyone's blood?

Why/Why not?

Part 3:

Active Reading

/Frayer Model

(15 min)

Directions:

Step 1) Actively read the article.

Step 2) Write THREE (3) Annotations as you read:

A) ONE (1) Connection to Life

B) ONE (1) Question you have

C) ONE (1) Main Idea Summarized

Step 3) After you have read and annotated, answer two of the four questions on the Frayer Model below:

Blood Transfusion

Frayer Model Transfusion

Part #4:

Turn and Talk

Maria's husband tells the doctors that her blood type is B.

Question:

What blood types can Maria safely receive?

Part 5

Stop n' Jot

(3 min)

Key Concepts:

1) Blood cells have antigens on the surface. There are four antigen possibilities A, B, AB and O.

2) Blood type is determined by which antigen is on the blood cell membrane.

A = A antigen

B = B Antigen

AB = AB Antigen

O = No Antigen

3) You can only receive blood with the same antigen or no antigen. If you receive blood with a different antigen (Blood type B gets blood type A) your body will attack the received blood and you will have symptoms similar to an allergic reaction.

Part 6:

Exit Ticket

(5 min)

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