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3 years ago

Why is earths interior layered?

1 answer:

4 0

The Earth is divided into three main layers. The dense, hot inner core (yellow), the molten outer core (orange), the mantle (red), and the thin crust (brown), which supports all life in the known universe.

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Which of these features was formed by river erosion? Group of answer choices

Mars2501 [29]

Answer:

A) The Grand Canyon

Explanation:

The Grand Canyon is the only option here that was formed from erosion. Hope this helps :)

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3 years ago

There is a risk that __________ can be transferred when using stem cells in medical treatments. What word completes the sentence

Rina8888 [55]

Answer:

Bone marrow transplantation

Explanation:

Stem cells are special cells generated in bone marrow. This can changed into different types of cells. They are red blood cells It carries oxygen to the body cells .White blood cells Resisting agents from infections . Platelets it performs clotting of blood

Stem cell transplant involves in removing of damaged cells instead placed stem places from blood or bone marrow

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3 years ago

Emphysema is a health condition in which the lungs can no longer expel carbon dioxide normally. As a result, a person who has em

UkoKoshka [18]

C. Homeostasis , because it just is

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3 years ago

Read 2 more answers

If 32 packed volume units of cells are separated from 46 volume units of plasma from a blood sample, the haematocrit is _______

nordsb [41]

Answer:

If 32 packed volume units of cells are separated from 46 volume units of plasma from a blood sample, the hematocrit is 41,02% percent. The hematocrit value is within the normal range.

Explanation:

Hello!

Hematocrit (or packed cell volume -PCV-)is defined as the percentage of red blood cells (vol%) in a blood sample. One common method of determining it is by centrifuging a heparinized blood sample in a capillary tube at 10 000 RPM for five minutes. This separates the blood sample in two layers, formed elements (RBC and WBC) and Plasma.

The length of the layers is directly measured from the tube and represents the volume of packed cells and plasma. Since the number of white cells is negligible compared to the number of red cells, the formed elements are considered to represent the red blood cells.

The hematocrit can be calculated as the volume of packed cells divided by the total volume of the blood sample.

$\frac{PCV}{TOTAL(pcv+plasma} * 100$

In the question:

$\frac{32}{32+46} * 100$ = $\frac{32}{78} * 100$ = 41,02%

In humans the normal hematocrit range is 40,7% to 50,3% for men and 36,1% to 44,3%. Taking these reference values into consideration, this sample is within the normal range.

I hope you have a SUPER day!

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3 years ago

Which leukocytes release histamine during the inflammatory response?

wolverine [178]

your answer would be C. basophils

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3 years ago