Answer:
One of the variables would be age and sex.
Explanation:
A person with disease with coromary disease, the first variable that would influence their genetic expression is age, and the second in my opinion would be sex, since the predisposition of certain diseases is different between both sexes, some are more frequent in women and others in men.
The age of a patient is a variable that must be taken into account in cardiovascular pathologies.
Answer:
Only the extracts from heat-killed cells treated with RNase are unable to transform nonvirulent bacteria into virulent bacteria.
Explanation:
The experiment by Avery, McCarty and MacLeod aimed to identify Griffith's "transforming principle," which is a principle that explains how transformation is a way of recombining, exchanging, or transferring genetic information between organisms or from one organism to another. For this, they used cell that were heat inactivated and purified the transforming principle of these cells.
The purified cells did not give positive results in the tests done by the scientists, but they presented transformants very similar to the DNA. However, Avery suspected that the result should be reinterpreted and that the molecule was not a DNA. This is because RNA degrading enzymes had no effect on the transforming principle and only RNase-treated heat-killed cell extracts are unable to transform non-virulent bacteria into virulent bacteria.
There are fewer antifungal, anti protozoan, and antihelminthic drugs compared to antibacterial drugs because these cells can be similar to human cells and therefore they can not achieve selective toxicity.
<h3>What is drug selective toxicity?</h3>
The expression 'drug selective toxicity' makes reference to the ability of a specific medication to discriminate between cells of different organisms (in this case human cells and other types of eukaryotic cells).
Drug selective toxicity is a fundamental issue during drug discovery and drug development.
In conclusion, there are fewer antifungal, anti protozoan, and antihelminthic drugs compared to antibacterial drugs because these cells can be similar to human cells and therefore they can not achieve selective toxicity.
Learn more about drug selectivity here:
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Rised in the recent years, accourding to a 2019 article 59% women rise in smoking was seen in the last 5 years
