Answer: B.
Explanation:
The normal hemoglobin and hematocrit level of a pregnant women is 12–16 g/dL and 36–46%.
Hence, as the given pregnant women has hemoglobin and hematocrit level under the normal range without any other deficiency, the nursing action will be to determine the blood type of the infant after delivery.
All the other given options are provided under some deficiencies.
Hence, the correct option is B.
Answer: chain link fence
Peptidoglycan could be found in high number on gram positive cell walls. The structure of peptidoglycan looks like a cross link which makes it sturdy, so rain coat would be false. It is not an impenetrable brick wall because it still allow some ion and food pass through it. Sugar candy coat sounds good but chain link fence would be better.
Complementary DNA (cDNA) is DNA synthesized from a single stranded RNA (e.g., messenger RNA (mRNA) or microRNA) template in a reaction catalyzed by the enzyme reverse transcriptase. cDNA is often used to clone eukaryotic genes in prokaryotes. When scientists want to expressa specific protein in a cell that does not normally express that protein (i.e., heterologous expression), they will transfer the cDNA that codes for the protein to the recipient cell. cDNA is also produced naturally by retroviruses (such as HIV-1, HIV-2, simian immunodeficiency virus, etc.) and then integrated into the host's genome, where it creates a provirus.[1]
The term cDNA is also used, typically in a bioinformatics context, to refer to an mRNA transcript's sequence, expressed as DNA bases (GCAT) rather than RNA bases (GCAU).
cDNA is derived from mRNA, so it contains only exons, with no introns.
This is an example of <em><u>natural selection</u></em> in action.
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