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Elina [12.6K]
3 years ago
9

What is a characteristic of aging and the immune system?

Biology
1 answer:
elena-s [515]3 years ago
8 0
<span>The answer is, C. Antibiotics are often ineffective in treating older people who have deficient immune systems


(:
</span>
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You observe a high proportion of malarial infections in a small village located in Angola. Malaria is caused by the protozoan Pl
svet-max [94.6K]

Answer:

<em>B and C.</em>

Explanation:

The epidemiological triangle is an illustration of interaction among suitable hosts, disease agents, and the environment that drives successful outbreak of diseases.

In order to successfully tackle or reduce the incidence of a disease, the triangle has to be broken.

<em>In the case of malaria which is caused by plasmodium but spread through the female anopheles mosquito, one way of breaking the epidemiological triangle is to eliminate female anopheles mosquito in the environment using any possible means. This will stop the spread of the parasite and hence, the disease.</em>

<em>Another way to reduce/prevent malaria is to prevent the vector, female anopheles mosquito from getting to the host, the human populace. This can also be achieved by several possible means.</em>

Relocating the entire village to a neighbouring village might not break the epidemiological triangle as long as female anopheles mosquito still abounds. In the same vein, antibacterial drugs will not help to treat malaria. However, instructing residents on personal protective measures and controlling the vector through chemical larvicides will go a long way in breaking the triangle and reducing the incidence on the malaria disease.

<em>The correct options is B and C.</em>

5 0
3 years ago
Which colorless and odorless gss
djverab [1.8K]
What does your question mean?
3 0
3 years ago
Do all mutations have the same effect on DNA? Why or why not?
katrin2010 [14]
I would say no because not all DNA is the same so some may respond differently
6 0
2 years ago
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Explain the difference between sexual reproduction and asexual reproduction. Explain either an advantage or disadvantage for
ira [324]

In asexual reproduction, reproductive organs aren't used but they're used.

advantage of sexual- A lot of genetic variation. since they have DNA of two parents. they can survive more and adapt more.

disadvantage of asexual- diversity is limited. Since the organism only gets the DNA of one parent, they wouldn't be able to really survive if something happened.They would easily be extinct.

Sorry I can't really cone up with better words but I hope you get the idea. it all comes down to natural selection really if you've learned about it. Hope it helped!!!

5 0
2 years ago
What is osmolarity of mammalian urine?​
DanielleElmas [232]

Answer:

The osmolarity of mammalian urine may vary over time. The osmolarity of mammalian urine varies little between species. Mammalian urine is always hyperosmotic to blood. The osmolarity of mammalian urine may vary over time.

Explanation:

I hope it will help you

6 0
2 years ago
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