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4vir4ik [10]
2 years ago
9

Could someone pls help me with biology?

Biology
1 answer:
lora16 [44]2 years ago
7 0
The circulatory system provides your brain with a constant supply of oxygen rich blood while your brain regulates your heart rate and blood pressure meanwhile your bones are busy making new blood cells. working together these systems maintain internal stability and balance otherwise known as homeostasi
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The blood of a normal healthy adult rat contains 5 million red blood cells (RBCs) per microliter of blood. Each deciliter of blo
Mama L [17]

Answer:

There are 4.28×10^10 RBCs in the blood sample.

Explanation:

Concentration of blood = 5×10^6 RBC/10^-6 L = 5×10^12 RBC/L of blood

Volume of blood sample = 8.56 mL = 8.56/1000 = 0.00856 L

Number of RBCs = concentration of blood × volume of blood sample = 5×10^12 RBC/L × 0.00856 L = 4.28×10^10 RBCs

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artcher [175]

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Select the correct answer.
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The term is called a theory.

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