BIOM111 Workbook Assignment Essays

3635 Words Feb 27th, 2015 15 Pages
Question 1: A
The incubation period for chicken pox is 2-3 weeks (Bishop,P et al. 2010), this is the contagious time before the signs and symptoms start showing, which means the nurse’s daughter, was past the infectious period of the disease. The nurse’s daughter could have had the virus for over a week, and exposed her mother to it during this time. If the nurse developed symptoms a few days after getting Varicella Zoster Immunoglobin, she had already contracted the virus before immuniglobin injection had been administered, thus not able to prevent chickenpox in this case.

Question 1: B
Pregnant woman are at high risk of severe disease/complications if they do not have immunity to chickenpox (Department of Health – Victoria, 2007). If
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Question 3: A
Phagocytosis is a vital part of the body’s second line of defence for immunity, to help protect the body from disease. It is one type of endocytosis (a process in which a substance gains entry into a cell without passing through the cell membrane), where the material the cell is taking in solid particles, such as virusis, bactieria or worn-out cells. Once the particle is recognised by receptors on the outside of a cell called a phagocyte, the plasma membrane extends outwards, which is called a pseudopod and surrounds the particle into a vesicle called a phagosome. Organelles called Lysosomes then attach to the phagosome and release digestive enzymes to degrade ingested material. (Tortora, G et al. 2012 p.76,77)

Question 3: B
Inflammation is a common non-specific defence response that happens at the location of an injury or infection, which involves signs of swelling, redness heat and pain (Bishop,P et al. 2010 p.142). If you have a cut, inflammation is basically fluid moving towards that cut (results in the swelling, redness and pain), which will bring in materials for repair like oxygen, platelets, and amino acids(Bishop,P et al. 2010 p142). Due to fluid moving towards the cut it is going to help stop or slow the spread of pathogens, by making it harder for pathogens to move away from the area. With the fluid moving towards the area, it’s going to bring in other immune

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