Week 2 - Homework #3

Question 1

List three common diseases caused by bacteria

Answer 1

TB
Bacterial Pneumonia
UTI
Meningitis

Question 2

List three common diseases caused by viruses

Answer 2

Chickenpox
Measles
Flu
Cold
Measles
Hepatitis

Question 3

Describe the structure of a virus

Answer 3

RNA or DNA intracellular parasites that consist of nucleic acid core surrounded by a protein coat and sometimes lipoprotein envelope

Question 4

List and describe three non-specific body defense mechanisms

Answer 4

Fever:
An increase in body temperature & metabolism to slow pathogens & speed our own processes

Inflammation:
Redness, heat, swelling, pain to reduce mobility and increase ability to fight or heal

Skin:
Surface barrier separating the outside from the inside through the layers, secretions, and. more

Question 5

Make comparisons between cell-mediated immunity and humoral immunity

Answer 5

Cell-mediated immunity:
involves infection within cells and helps target pre-cancerous cells or viral infections

Humoral Immunity:
Involves the body fluids being infected and involves production of antibodies

Question 6

Explain the differences between antigens and antibodies

Answer 6

Antigen:
A protein or complex molecule -
foreign in origin
Will elicit an immune reaction (response)

Antibody:
A protein that our B cells produce in the immune reaction (response) to a foreign anitigen