Describe the tuberculin response and identify the type of response involved
What will be an ideal response?
The tuberculin response is a type of delayed hypersensitivity reaction. It is used to diagnose contact with antigens from Mycobacterium tuberculosis. When tuberculin is injected into the skin of an individual who has never contracted tuberculosis and has never received the tuberculosis vaccine, no response occurs. If the patient has been exposed to tuberculin antigen by infection or prior vaccination, a red swelling develops at the site of injection. This reaction is considered a positive tuberculin response.
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Is a clone genetically identical to its parent(s)?
A. Yes, a clone is genetically identical to its single parent (the donor of the nucleus). B. No, a clone has its own set of genetic differences from its parent. C. Yes, a clone is genetically identical to both of its parents (the donor of the nucleus, and the donor of the cell in which it grew). D. No, a clone is only genetically identical to the donor of the cell in which it grew.
To which of the following classes of sugars does glucose belong?
A) pentose B) hexose C) tetrose D) heptose E) triose
Which four elements make up 96% of the weight of living organisms?
A.) carbon, oxygen, sodium, and hydrogen B.) carbon, hydrogen, nitrogen, and oxygen C.) carbon, phosphorus, sodium, and hydrogen D.) carbon, calcium, oxygen, and nitrogen E.) carbon, sodium, chlorine, and oxygen
Describe the mechanism by which PrP is infectious.
What will be an ideal response?