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2 years ago

What similarities and differences do the phytoplankton share with members of kingdom plantae?

Biology

1 answer:

Irina-Kira [14]2 years ago

6 0

Answer:

The similarities that can be seen in the members of kingdom plantae and plankton is that both of them perform photosynthesis.

These organisms provide oxygen and food to the other members. These members get energy for living their life.

The planktons and the members of kingdom plantae requires nutrients for their growth and development.

The differences that can be seen in the plankton and members of plantae is that plankton are found on the surface of water.

The members of plantae can be found on the land, on the surface of water. But some of the species like brown and red algae are found in the depth of sea or ocean.

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Answer:

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Explanation:

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2 years ago

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2 years ago

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

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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.

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