Worksheet 6 Part2 Microbiology

Worksheet 6 (Part2) Microbiology In section 2 of worksheet 6 you will be asked to answer a series of short answer, critical thinking and case study questions. Please consider each question carefully and then answer in your own words. Below is the rubric that will be used to evaluate your answers. Please review it carefully.

Once you have completed all questions, submit your worksheet ("submit quiz" button). You will only be able to submit your worksheet once. Question 1 2 pts

Answers should be about 50-100 words in length and in your own words.

Identify and describe three groups of low G+C Gram-positive bacteria.

Gram positive bacteria are bacteria that are able to take up the crystal violet staining used in the Gram test. The

a. What does the term vector mean in relation to infectious diseases?

In relation to infectious diseases, a vector is any organism that carries, facilitates and transmits a pathogen into the body of another organism, often referred to as the host. The vector is not responsible for causing the disease in itself, but rather serves as a temporary reservoir for the pathogen before transmitting it to the host.

b. How are flying arthropod vectors epidemiologically significant?

Flying arthropod vectors are significant epidemiologically because they play important roles in the lifecycle of many pathogens. Most Flying arthropods feed on blood at some point in their lifecycle; as a result, during the cause of feeding on the blood of hosts, the flying arthropods infect them, releasing the dangerous pathogens into the body system of the host. Furthermore, flying arthropods are able to infect numerous hosts during the course of its life. Additionally, flying arthropods are very prolific, and as a result, their numerous offspring would ensure the transmission of pathogens to their target

Describe the role of viruses in cancer.

Viruses are able to cause cancers. A good example of this is the development of cervical cancer after an infection of Human Papilloma Viruses (HPVs), among others. Viruses are able to cause cancers in two major ways.

First of all, viruses are able to turn the cells of that host into a ‘virus-producing machine’ by making use of the host cell’s DNA to code for more viruses, instead of other cells. While doing this, viruses have the ability to mutate their genes very rapidly. As a result, these changes in genetic code could cause changes in the cells’ normal cycle, consequently leading to an abnormal rate of growth that harbingers cancer.

On the other hand, viruses are able to elicit an inflammatory response in the tissues of the host, as the host’s immune system tries to destroy the viral attack. With time, the inflammation would lead to an abnormal rate of cell reproduction within the region, consequently leading to the development of cancer.

Question 7 5 pts

Answers should be about 100-300 words in length and in your own