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Debora [2.8K]
3 years ago
12

Select the proper cell parts listed below to fill in the blanks of the sentences that follow: 1. the is the semi-liquid portion

of the cell in which the cell parts are located. 2. the is referred to as the headquarters of cell operation. 3. the structure found in a plant cell, but not in an animal cell, that carries out process of photosynthesis is the . 4. proteins are manufactured by the . 5. the structure that surrounds the cell and regulates what enters and leaves the cell is the . 6. nicknamed the "powerhouse of the cell", the are involved in energy production for the cell. 7. the surrounds the nucleus and controls what enters and leaves it. 8. in addition to a cell membrane, plant cells also have a that serves to provide strength and support to the cell. 9. are structures that contain digestive enzymes. 10. storage chambers within the cell are called . 11. found mostly in animal cells, the plays a role in cell division. 12. the cell structure that prepares and packages proteins either for use within the cell or for shipment out of the cell is the . 13. located within the nucleus, the is involved in making ribosomes for the cell. 14. among other tasks, the serves as a transportation system within the cell. 15. another name for the dna material located within the nucleus of the cell is .
Biology
1 answer:
Margarita [4]3 years ago
3 0
Cytosol is the cytoplasm of a cell

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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 <u>41,02%</u> percent. The hematocrit value is <u>within the normal</u> range.

Explanation:

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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

<u>In the question:</u>

\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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Nancy designs lenses for cameras and binoculars. Which branch of science
Salsk061 [2.6K]

Physical science deals with lens for cameras and binoculars.

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Physical science is a branch of science that deals with the study of intimate natural objects such as it includes physics, astronomy and chemistry related subjects.

A lens is a transparent material that refracts light rays so that image can be formed. A lens has two curved surface which are made up of plastic or glasses which are concave and convex in nature.  A converging lens is used to produce images.

Thus Nancy is dealing with physical science as she designs lens for binoculars and cameras.

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