Physioex Exercise 11 Activity 4 Answers

Exercise 11: Blood Analysis: Activity 4: Blood Typing Lab Report

Pre-lab Quiz Results

You scored 100% by answering 4 out of 4 questions correctly.

1. Red blood cell membranes have

You correctly answered: c. agglutinogens that specify that individual's blood type.

2. ABO and Rh antigens

You correctly answered: d. All of these answers are correct.

3. Which of the following statements about blood types is correct?

You correctly answered: d. A person with type O blood has two recessive alleles and has neither the type A nor type B

antigen.

4. Antibodies to the A and B antigens are

You correctly answered: a. found preformed in the blood plasma.

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Experiment Results

Predict Question:

Predict Question: If the patient's blood type is AB- , what would be the appearance of the A, B, and Rh samples?

Your answer : a. A, clumped; B, unclumped; Rh, clumped

Stop & Think Questions:

Why are individuals with the AB+ blood type known as universal recipients for blood transfusions?

You correctly answered: c. They have both A and B antigens on the surface of their RBCs, and their blood serum does not

contain antibodies against A, B, or Rh antigens.

Experiment Data:

Blood sample

1

2

3

4

5

6

Agglutination with

Anti-A Serum

positive

negative

positive

negative

positive

negative

Agglutination with

Anti-B Serum

negative

positive

positive

negative

positive

positive

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Agglutination with

Anti-Rh Serum

positive

positive

negative

negative

positive

negative

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Blood Type

A+

B+

ABOAB+

B-

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Post-lab Quiz Results

You scored 75% by answering 3 out of 4 questions correctly.

1. To determine an individual's blood type, drops of the blood sample are mixed

You correctly answered: a. separately with antiserum containing antibodies that recognize either type A antigens, type B

antigens, or Rh antigens.

2. Agglutination

You correctly answered: d. All of these answers are...