AUG 2018 COMPLETE ANSWERS

Question 1

1. Describe the most important contributions to biomedicine of the following scientists:
   a. Ronald Ross
   b. Marie Curie
   c. Hippocrates
   d. Casimir Funk

Answer 1

Ronald Ross (1897)

• Discovered the protozoan malarial parasite in human blood .
• Proved in 1897 , there was a link between mosquito and malaria

Evidence - Dissected a stomach of mosquito and found complete life cycle of parasitic organism

Marie Curie (1898)
Crucial development of X-ray/discovery of another element known as polonium
- Radium

Hippocrates

• Nature Healing /Fresh Air
• Interested in determine the cause and treatment of diseases .

Casmir Funk ( 1912)

• Vitamin Discovered in 1912 by Casmir flunk
• Their isolation/synthesis allowed the cure of vitamin defienciey diseases
• Discovered four substances B1, B2 in keeping healthy stopping them from getting the disases .

Question 2

Briefly describe the development of Cirhois ?

Answer 2

Damage occurs to the liver

Causing scar tissues to for , making it more difficult for the liver functions

Symptoms are caused which lead to itchy skin, weight loss and fatigue

With Cirrhosis, in particular can take many developed the building of scare tissue can interfere with flow of blood to your liver and stops it from functioning properly which can lead to cirrhosis liver failure

Question 3

Life Cycle Of Malaria

Answer 3

Involves two hosts
Female Mosquito suck blood from human injecting plasmodium parasites

Sporazites pass quickly into the human liver

Multiply asexually in the liver cells , over next 7-10 days causing no symtoms

Sporazites infect liver cells and mature into schizons rupture and release merazotes

Question 4

How do Cancer cells become Immortal ?

Answer 4

If there is enough nutrients /oxygen for the cancer cells and nutrients cause themt o grow becoming immortal and re emerge

Each cell division, telomeres shorten it leading to the cell to die .

Question 5

How does Immune systems contribute to the Following ?

Answer 5

Hay fever : Your immune system defence responds as of it were being attacked by virus these chemicals cause the symptoms of the allergic reactions such as watering eyes /runny nose

Tumour growth : Drugs targeting 5stats may therefore boost tumour growth .Immune systems play a role in protection of cancer .