The diagram below shows some of the steps in protein synthesis. Transfer to site of
protein synthesis
Nucleus
-mRNA
DNA
Unwinding
of DNA
Rewinding
of DNA
The section of DNA being used to make the strand of mRNA is known as a
1.
carbohydrate
2.
gene
3.
ribosome
4.
chromosome

The section of DNA being used to make the strand of mRNA is known as - 2.  gene

Thus, The section of DNA being used to make the strand of mRNA is known as - 2.  gene

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According to the diagram shown, the section of DNA used to make the mRNA strand is known as a gene (option 2).

Explanation:

Gene consists of a DNA fragment that codes for the synthesis of a specific protein that defines the structural or functional trait of a living being.

When DNA is transcribed into mRNA, each section of transcribed DNA is part of a gene. The information travels to ribosomes in the cytoplasm where protein synthesis occurs.

A complete DNA molecule forms a chromosome, which contains the genes with information to define specific traits of a species.

The other options are not correct because:

    1.Carbohydrate is a biomolecule that is not involved in the genetic process.

    3. Ribosome is where protein synthesis occurs.

    4. Chromosome is the complete DNA molecule.

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.