What is the systematic study of natural world?

1 answer:

4 0

The systemic study of natural world is called natural science. It is concerned with the understanding of natural phenomena based on collected data, knowledge or sense of experience by means of observation and experimentation. Natural science is subdivided into two main branches: one is biological science or life science which aims to study life and living organisms their function, structure, evolution, growth, distribution and taxonomy second is physical science which is also broken down into different branches, including Earth science, astronomy, chemistry and physics.

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The Punnett square predicts the ratio of genotypes in the offspring based on the genotypes of the parents. Which Punnett square

DIA [1.3K]

Hey there!

Here is your answer:

Since there are not options im going to go with what i know:

(Alleles)

heterozygous: A,a
homozygous: a,a

Therefore the Punnett square should look like this:

A, a
a IA,a I a,a
a IA, a I a, a

Therefore the answer is 50% A,a , and 50% a, a!

If you need anymore help feel free to ask me!

Hope this helps!

~Nonportrit

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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 _______

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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In an experiment to determine whether M phase cells contain a regulatory molecule that initiates mitosis, cytoplasm from M phase

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Answer:

As a negative guide, to demonstrate that perhaps the injection itself has no impact on the cell cycle.

A successful experiment has handled the same control group as the experimental group with the exception of the variable being examined, in this case the cytoplasm M-phase.

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Which of the following statements indicates the way in which the body's natural defenses protect the skin from the effects of UV

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Provide the statements for the answer

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Both the full body plate type and the half body plate trait are also present in an ocean near the lake. Where would you expect a

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Full body plate trait in ocean

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