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2 years ago

DNA replication results in two DNA molecules, _. Thus replication is _.

Biology

1 answer:

kvasek [131]2 years ago

5 0

Answer:

consisting of one new and one old chain of nucleotides.

is described as semi-conservative, half of the chain is part of the original DNA molecule, half is brand new.

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mr Goodwill [35]

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3 years ago

Why is breathing more difficult at high altitudes, such as at the top of mount everest?

yanalaym [24]

The oxygen molecules are less pressurized causing more empty space between them in the air we breathe.

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3 years ago

Which would most likely cause a person to produce antibiotics?

MissTica

Answer:

A) Receiving a vaccination.

Explanation:

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3 years ago

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.

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3 years ago

What are internal cost and benefits?

Lyrx [107]

Internal costs are easy to see and explain. They are costs that a business bases its price on. They include costs like materials, energy, labour, plant, equipment and overheads. External costs are costs that are NOT included in what the business bases its price on.

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3 years ago

DNA replication results in two DNA molecules, _________________________. Thus replication is _________________________.

DNA replication results in two DNA molecules, _. Thus replication is _.