Which statement is not true about T cell subclass differentiation?
A) T cell subclass differentiation is caused by the release of cytokines that is influenced by the antigen's nature and the amount present.
B) Regardless of which T helper cell subclass develops during an immune response, the humoral response is not impacted.
C) Particular combinations of cytokines will favor the development of some T cell subclasses over others.
D) Each subclass will include both effector and memory cells.
E) Which specific T helper cell subclass that develops may impact the progression and outcome of an infectious disease.
Answer: B
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What can animals do to maintain an energy balance when food supplies become scarce in winter?
A. All of these answer options are correct. B. hibernate to reduce energy expenditure and conserve energy reserves C. migrate to areas with more abundant food supplies D. migrate to warmer areas E. build up enough of a positive energy balance during summer and fall to sustain them through the winter
The genetic material of all living organisms is
a. protein. b. deoxyribonucleic acid. c. ribonucleic acid. d. glycoprotein. e. polypeptide.
What are the functions of the large intestine?
A) produce digestive enzymes B) forms feces C) absorb water D) absorb some vitamins E) produce bile
An asymptomatic carrier (healthy carrier or just carrier) is a person or other organism that has become infected with a pathogen, but who display no signs nor symptoms. Although unaffected by the pathogen themselves, carriers can transmit it to others
a. true b. false