Antibiotics are routinely used to control bacterial infections. Would compounds targeting the peptidoglycan layer of bacteria be useful as antibiotics? Explain the reason behind your answer?(HINT: Think about the concept of selective toxicity)

Please Use your keyboard (Don't use handwriting)

PHC 261

I need new and unique answers, please. (Use your own words, don't copy and paste)

( Please i need more than 500 words please)

Q. 1. Write essay note on Occupational safety and health protection of health workers from acute respiratory diseases during respiratory diseases outbreaks
following subtitle: (Minimum & Maximum 2-3 pages)
1.   Mention the epidemic and pandemic respiratory diseases recommended for protection of health workers
2.   As a health worker how can protect your self-form diseases mention above?
3.   What is the role of the administrations to protect health workers?

___

please complete my answer to be 500 words...

Safety is done by taking some precautions like avoidance of iritant through its removal from workplace or through technical shielding by the use of potent irritant in closed systems or automations ,,, improve the related laws about health safety, by taking care of adaptation and adjustment of workers.

All workers should wear mask on face.

They should always wash their hands with hand wash, or use sanitizers if handwash is not available..

Avoid contact with people who are seems to b unhealthy or having cold like symptoms  

They should always use tissue papers for cleaning nose or use tisse papers during sneezing for closing the nose.

1)...

Epidemic disease like weil syndrome, yellow fever, bubonic plague, influenza, small pox, chicken pox, typhus, syndemic infection, hepatitis B and D.

Pendamic- cholera, covid 19, ebola, influenza etc.

2) by taking the same precautions which are written above according to particular disease.

3) labour inspection

Training and education about safety

Develop a safety compliance plan.

B

Imagine two species of snakes that live in a tropical rain forest of Malaysia do not typically interbreed. In nature, one species is ground-dwelling and feeds mainly on insects and small amphibians near water, whereas the other snake feeds in the lower to mid-canopy of trees and vines rising from the forest floor. However, at a zoo in Singapore where they were kept in the same gallery exhibit, the two species were observed interbreeding and produced viable offspring. Which of the following reproductive barriers is most likely preventing these species from interbreeding in the forest?

• habitat isolation
• gametic isolation
• reduced hybrid viability
• a postzygotic barrier
• mechanical isolation

A previous group of students wanted to investigate the factors that contribute to female fecundity (total number of eggs a female lays).  They wondered if the female’s body weight might play a role.  The students collected and weighed 15 newly-emerged virgin female bean beetles.  Each female was mated and given plenty of black-eyed peas on which to lay eggs.  Each day the students checked the beans for eggs, counted the number of eggs, and gave the female fresh beans.  When the female died, the students added up the total number of eggs each female laid.

1. What is the independent variable?  What are the potential values for this variable? What is the dependent variable?  What are the potential values for this variable?
2. What are the study subjects?  Be specific!
3. What might be the researchers’ hypothesis?
4. What type of scientific study did the researchers conduct?
5. If this study is an experiment, what are the treatments?  Label the treatments as either experimental or control.
6. What was the sample size of this study?
7. List three potentially confounding variables that were or should have been controlled in this study.

1. How does cyanide poisoning relate to respiration? limit to 1 paragraph

1. Codes of ethics and standards for professional nursing practice have been developed by some professional nursing organizations. These codes and standards guide us in our practice and our interactions with consumers, other nurses, and other health care professions. Select at least one of the ethical standards or one of the standards of practice and tell us how you implement this in your current practice or how you will implement it in your future practice. Which standard is most challenging to you, and why?
2. Please provide an example of an ethical dilemma you have experienced. How were these issues be addressed/resolved?

IN YOUR OWN WORDS! 100 WORDS FOR EACH QUESTION.

Usain Bolt, a world champion sprinter, can run a 10-meter split in 0.82 seconds. Say you obtain a quadriceps muscle sample from Usain Bolt and compare it to one from a 25-year-old male long-distance runner. What differences do you expect to observe between those two muscle samples? Select all that apply.

A) red and white muscle fibers of larger cross-sectional area in Usain Bolt's leg muscles

B) more mitochondria in Usain Bolt's leg muscles

C) more fast-twitch fibers in Usain Bolt's leg muscles

1. Oxygen plays an important role in distinguishing the lifestyles of prokaryotes. Name and describe the five modes of growth bacteria can exhibit in response to oxygen (0.5 pts for each correct lifestyle and description). Provide a bacterial species as an example for each lifestyle and list which clade it belongs to (e.g. Lysinibacillus parviboronicapiens is a Gram-positive bacteria – you won’t get credit if you use this example. 0.5 pts for each correct example and clade).

It may be said that it each week it takes 8000 pounds of grass to feed a small herd of zebras (which together weighs 3000 pounds). These zebras will sustain a group of lions, which together weigh 1000 pounds. Why does it take more energy stored in one level of this simple food chain to sustain the next level of the food chain? Your answer lies in the laws of thermodynamics.

Describe two causes of BOTH the fast and the slow phase of EPOC (excess post-exercise oxygen consumption).

Similarities and differences between natural, domestic, and sexual selection.

Please answer both questions:

1. A number of different buffers/components are used in the PCR. Explain the function of each:

DNA plasmid

Primer pair

dNTPs mixture

Taq polymerase

2. In our PCR reaction the optimum annealing temperature is 56^oC. Explain the general factors that help determine the optimum annealing temperature of a PCR reaction

An organism that possesses all the enzymes of the EMP and Pentose Phosphate pathway

has remarkable metabolic flexibility. Consider, for example, the need that organisms have

for erythrose-4-phosphate. Devise a metabolic sequence that will accomplish net synthesis

of erythrose-4-phosphate from glucose without the accumulation of any other

intermediates. (10 points).

How would a variation in fatty acid chain length and saturation affect the fluidity of a membrane. Describe how a glycerophospholipid and a sphingolipid would be positioned in this membrane.