Question

question 17 (1 point) ✓ saved
materials that work well as immunogens include
proteins, lipoproteins, polysaccharides
glycoproteins, dna, rna
lipopolysaccharides, haptens, monosaccharides
small molecules, simple molecules, and repetitive molecules
question 18 (1 point) ✓ saved
_____ is any chronic local allergy such as hay fever or asthma.
atopy
anaphylaxis
eczema
type ii hypersensitivity
question 19 (1 point) ✓ saved
using figure 17.6 in your text, identify the organism that is a non-spore forming,
gram-positive bacillus that can assume multiple shapes.
bacillus
mycobacterium
lactobacillus
corynebacterium

Explanation:

• Question 17: Proteins, lipoproteins, and polysaccharides are good immunogens. Proteins have complex structures with multiple epitopes. Lipoproteins combine lipid and protein components, and polysaccharides can also stimulate an immune response. DNA and RNA (in option 2) are less immunogenic on their own in many cases. Haptens (option 3) need to bind to a carrier to be immunogenic, and monosaccharides are simple sugars. Small, simple, and repetitive molecules (option 4) are often not good immunogens as they may lack sufficient complexity.
• Question 18: Atopy is defined as a chronic local allergy like hay fever or asthma. Anaphylaxis is a severe systemic allergic reaction. Eczema is a skin condition. Type II hypersensitivity is a different type of immune - mediated reaction (involving antibodies against cell - surface antigens).
• Question 19: Corynebacterium is a non - spore - forming, Gram - positive bacillus that can have variable shapes. Bacillus forms spores. Mycobacterium has a different cell wall structure (acid - fast). Lactobacillus is a Gram - positive rod but has different characteristics compared to the description in the question.

Answer:

• Question 17: proteins, lipoproteins, polysaccharides
• Question 18: Atopy
• Question 19: Corynebacterium