Platelets and red blood cells are components of the blood. A typical platelet and red blood cell have diameters of approximately 2.33×10^−6 m and 0.0000075 m, respectively. Which blood component has a bigger diameter, and approximately by how much?
A red blood cell has a bigger diameter than a platelet by 9.83×10^−6 m.
A platelet has a bigger diameter than a red blood cell by 9.83×10^−6 m.
A platelet has a bigger diameter than a red blood cell by 5.17×10^−6 m.
A red blood cell has a bigger diameter than a platelet by 5.17×10^−6 m.
A red blood cell has a bigger diameter than a platelet by 9.83×10^−6 m.
China and India are the most populous countries in the world. China’s population is approximately 1.45×10^9 , while India’s population is approximately 1,400,000,000. How many more people live in China than in India?
5×10^10
5×10^9
5×10^7
5×10^8
China has approximately 1.45×10^9 people, while India has approximately 1,400,000,000 people. To find out how many more people live in China than in India, we subtract the population of India from the population of China:
1.45×10^9 - 1,400,000,000 = 5×10^7
Therefore, there are 5×10^7 more people living in China than in India.
A red blood cell has a diameter of approximately 0.0000075 m, which is equivalent to 7.5×10^−6 m. On the other hand, a platelet has a diameter of approximately 2.33×10^−6 m.
Comparing the two, we can see that a red blood cell has a bigger diameter than a platelet. The difference in diameter is given by:
7.5×10^−6 m - 2.33×10^−6 m = 5.17×10^−6 m.
So, a red blood cell has a bigger diameter than a platelet by approximately 5.17×10^−6 m.
To determine which blood component has a bigger diameter and by approximately how much, we need to compare the diameters of a platelet and a red blood cell.
Given:
Diameter of a platelet = 2.33×10^−6 m
Diameter of a red blood cell = 0.0000075 m
To find the difference in diameter, we subtract the diameter of one component from the other. Let's perform the subtraction:
Diameter of a red blood cell - Diameter of a platelet
= 0.0000075 m - 2.33×10^−6 m
Now, calculating this difference gives us:
≈ 0.0000075 m - 0.00000233 m
≈ 0.00000517 m
So, the difference in diameter between a red blood cell and a platelet is approximately 5.17×10^−6 m.
Therefore, the correct answer is: A red blood cell has a bigger diameter than a platelet by 5.17×10^−6 m.