7. Which of the following statements about mature circulating erythrocytes is true? 1. They have no nucleus. 2. They are packed with mitochondria. 3. They survive for an average of 4 days 4. All of the above

Question

7. Which of the following statements about mature circulating erythrocytes is true? 1. They have no nucleus. 2. They are packed with mitochondria. 3. They survive for an average of 4 days 4. All of the above

Answer 1

The correct answer is 1.

Answer 2

## Step 1The question is asking us to identify the correct statement about mature circulating erythrocytes, also known as red blood cells. Let's analyze each option:## Step 2Option 1 states that mature erythrocytes have no nucleus. This is indeed true. During the maturation process, red blood cells lose their nucleus to maximize the space available for carrying oxygen.## Step 3Option 2 suggests that mature erythrocytes are packed with mitochondria. This is incorrect. Red blood cells do not contain mitochondria because the presence of mitochondria would consume the oxygen that the cell is meant to carry.## Step 4Option 3 claims that mature erythrocytes survive for an average of 4 days. This is also incorrect. The lifespan of a red blood cell is approximately 120 days, not 4.## Step 5Option 4 states that all of the above statements are true. Since options 2 and 3 are false, option 4 is also false.

Problemas

7. Which of the following statements about mature circulating erythrocytes is true? 1. They have no nucleus. 2. They are packed with mitochondria. 3. They survive for an average of 4 days 4. All of the above

Roztwór

Respuesta

Explicación