Components of Blood and Blood Groups - Worksheet | Distance ... - Free Printable

Problem Analysis and Solution

#### Question 10: Identify the blood groups on the chart below.

The ABO blood group system is based on the presence or absence of two antigens, A and B, on the surface of red blood cells. The four main blood groups are:
- Group A: Red blood cells have A antigens.
- Group B: Red blood cells have B antigens.
- Group AB: Red blood cells have both A and B antigens.
- Group O: Red blood cells have neither A nor B antigens.

Now, let's analyze the images provided in the chart:

1. First Image: The red blood cell has only purple dots (representing A antigens).
- This corresponds to Blood Group A.

2. Second Image: The red blood cell has only green dots (representing B antigens).
- This corresponds to Blood Group B.

3. Third Image: The red blood cell has both purple dots (A antigens) and green dots (B antigens).
- This corresponds to Blood Group AB.

4. Fourth Image: The red blood cell has no dots (no antigens).
- This corresponds to Blood Group O.

So, the completed chart is:

| Blood Group | First Image | Second Image | Third Image | Fourth Image |
|-------------|-------------|--------------|-------------|--------------|
| | A | B | AB | O |

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#### Question 11: A person with blood group AB _______.

The ABO blood group system also involves antibodies in the plasma that correspond to the antigens present on the red blood cells. Here are the key points:
- Blood Group A: Has A antigens on red blood cells and anti-B antibodies in the plasma.
- Blood Group B: Has B antigens on red blood cells and anti-A antibodies in the plasma.
- Blood Group AB: Has both A and B antigens on red blood cells but no antibodies in the plasma (since it has both antigens, it does not produce antibodies against either A or B).
- Blood Group O: Has no antigens on red blood cells but has both anti-A and anti-B antibodies in the plasma.

Given this information, for Blood Group AB:
- The red blood cells have both A and B antigens.
- The plasma does not contain any antibodies (anti-A or anti-B).

Thus, the correct answer is:
c) has both A and B antigens on the red blood cells and no antibodies in the blood plasma.

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#### Question 12: The Rh blood groups are based on the presence or absence of an antigen known as Rh. Blood containing an Rh antigen is said to be _______.

The Rh blood group system is based on the presence or absence of the Rh antigen (also called the D antigen) on the surface of red blood cells. There are two main categories:
- Rh positive (Rh+): Red blood cells have the Rh antigen.
- Rh negative (Rh−): Red blood cells do not have the Rh antigen.

If blood contains the Rh antigen, it is classified as Rh positive (Rh+).

Thus, the correct answer is:
b) Rh positive (Rh+).

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Final Answers:

1. Question 10:
- First Image: A
- Second Image: B
- Third Image: AB
- Fourth Image: O

2. Question 11: c) has both A and B antigens on the red blood cells and no antibodies in the blood plasma.

3. Question 12: b) Rh positive (Rh+)

Boxed Final Answers:

\[
\boxed{A, B, AB, O}
\]
\[
\boxed{c}
\]
\[
\boxed{b}
\]