The correct answer is; The 5 year old child with asthma because left untreated could lead to asthmaticus.
Further Explanation:
The 5 year old child should be seen first and treated as an acute emergency situation. Since the child already has asthma and is having chest pain and a cough she must be seen first. It can be assumed that the parents have already given the child the inhaler and it did not help.
When the child was unresponsive to the inhaler or bronchodilators the correct course of action was to be seen at the emergency room. Left untreated this can lead to several conditions such as;
- hypercarbia
- secondary respiratory failure
- hypoxemia
The smog only worsens this condition and the could have fatal consequences if not treated immediately.
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<h3><u>Answer</u>;</h3>
Genes;
- are specific nucleotide sequences
- are located in a specific place on a chromosome
- determine the traits of an organism
<h3><u>Explanation;</u></h3>
- Genes are the basic physical and functional units of heredity. They consists of a specific sequence of nucleotides at a given position on a given chromosome that codes for a specific protein.
- Genes consist of three types of nucleotide sequence: coding regions, called exons, which specify a sequence of amino acids, non-coding regions, called introns, which do not specify amino acids and regulatory sequences, which play a role in determining when and where the protein is made.
Answer: The membrane is selectively permeable because substances do not cross it indiscriminately. Some molecules, such as hydrocarbons and oxygen can cross the membrane. Many large molecules (such as glucose and other sugars) cannot. Molecules of oxygen and carbon dioxide have no charge and pass through by simple diffusion. Polar substances, with the exception of water, present problems for the membrane. While some polar molecules connect easily with the outside of a cell, they cannot readily pass through the lipid core of the plasma membrane.
Explanation:
Answer:
d. Expressivity refers to the range of expression of a given phenotype.
e. Penetrance refers to the percentage of individuals that expresses the mutant phenotype.
Explanation:
Penetrance is the probability of a gene being expressed. Sometimes, phenotype is not observed even when the dominant allele is present. It is a result of various genetic and environmental factors coming together.This phenomenon is called as incomplete or reduced penetrance. For example: polydactyly trait is produced by a dominant allele but its penetrance is low in general population hence few people show this trait.
Expressivity is the variation in phenotypic expression when an allele is penetrant. Same genetic combination for a trait can have different expressivity in the same population. This phenomenon is also a result of genetic and environmental factors acting together. For example: people who do end up showing polydactyly trait may show it to different degrees. Some might have one extra finger, some might have two. Some might have a stub, some might have a full grown finger.
